Peb Qhov Kev Pabcuam

Tsev / Peb Qhov Kev Pabcuam / Refractory

Silicon Carbide

Silicon carbide, tseem hu ua carborundum, yog ib qho chaw ua los ntawm silicon thiab carbon. Cov tshuaj no muaj nyob rau hauv cov ntxhia hu ua moissanite.Qhov tshwm sim ntawm silicon carbide muaj npe tom qab tus kws muag tshuaj Fabkis hu ua Dr. Ferdinand Henri Moissan. Moissanite feem ntau pom muaj tsawg heev hauv meteorites, kimberlite, thiab corundum. Li no, feem ntau cov lag luam silicon carbide yog hluavtaws.Txawm hais tias nws yog ib qho nyuaj rau nrhiav tau ib txwm tshwm sim silicon carbide nyob rau hauv lub ntiaj teb no, nws yog heev ntau nyob rau hauv qhov chaw. Silicon carbide yog ib qho ntawm cov tshuaj muaj txiaj ntsig zoo tshaj plaws hauv ntiaj teb niaj hnub no. Nws daim ntawv thov txiav hla ntau qhov kev lag luam.

Xa kev nug

Peb lub Hoobkas

NY TWO GLOBAL muaj zog muaj nyob rau ntawm refractory & abrasive kev lag luam txij li kaum xyoo dhau los. Los ntawm kev sib txuas cov peev txheej thiab pab pawg kws tshaj lij, peb tau nthuav dav peb txoj kev lag luam rau hauv Alloy, Lub Hnab Loj thiab cov khw muag khoom lag luam.Peb muaj ob 100% muaj BFA cov nroj tsuag thiab ib lub hnab loj cog. Los ntawm kev nqis peev qee lwm cov nroj tsuag refractory, peb txhim kho peb txoj haujlwm ntawm kev tsim khoom thiab kev tswj kom zoo rau tus nqi zoo dua.Refractory & Abrasive Raw Khoom: Silicon Carbide, Dawb Fused Alumina, Dawb Tabular Alumina, Dub Silicon Carbide, Fused Mullite, Bauxite, Fused Magnesia, Tuag hlawv Magnesia, Calcined Alumina thiab lwm yam Alloy: High-Medium-Low Carbon Ferro Manganese, High Carbon Ferro Chrome, Tsawg Carbon Ferro Chrome, Silico Manganese, Ferro Silicon, Silicon hlau, manganese hlau, Cored Wires, Incoulants, thiab lwm yam.

Vim Li Cas Xaiv Peb

Lub Hoobkas muaj zog
NY TWO GLOBAL muaj zog muaj nyob rau ntawm refractory & abrasive kev lag luam txij li kaum xyoo dhau los. Los ntawm kev sib txuas cov peev txheej thiab pab pawg kws tshaj lij, peb nthuav dav peb txoj kev lag luam mus rau Alloy, Lub Hnab Loj thiab cov khw muag khoom lag luam.

Kev tswj kom zoo
Real-time cov ntaub ntawv kuaj thiab tshuaj xyuas rau txhua theem ntawm kev tsim khoom los ntawm peb tus kheej lub chaw kuaj.

Peb daim ntawv pov thawj
Tag nrho peb cov nroj tsuag tau raws li ISO 9001: 2015, ISO 14001: 2015 & OHSAS 18001: 2007.

Kev tsim khoom lag luam
Los ntawm muaj zog nyob rau hauv Tuam Tshoj, Is Nrias teb, Qaib Cov Txwv, Teb chaws Europe thiab US, peb muaj kev sib txuas nruj nrog cov neeg tseem ceeb hauv txhua qhov Kev Lag Luam.

Yam khoom

Zirconia hlaws

Zirconia hlaws siv tsis tshua muaj lub ntiaj teb yttrium oxide ua tus stabilizer, kev siv lub siab dawb, siab fineness ntawm raw cov ntaub ntawv los xyuas kom meej tias cov khoom tsis muaj kuab paug. Fine microstructure, du ua hauj lwm nto, txo cov kev sib txhuam ntawm cov hlaws dai, txhim kho kev sib tsoo efficiency. 2,ka ua

Brown Corundum Abrasive Sand

Brown corundum abrasive xuab zeb yog dav siv nyob rau hauv machining qhov chaw rau ultra-fine sib tsoo, tab sis kuj muaj peev xwm tsim cov ntaub ntawv refractory, tshav kub rwb thaiv tsev panels, tej cuab yeej ceramic, xim av corundum abrasive xuab zeb kuj siv tau raws li tshuaj tsuag raw khoom.

Silicon Carbide

Kev cob qhia JS tus qauv 240#--8000# Silicon carbide: Specific gravity: 3.2 Bulk density: 1.45-1.56g/cm3 Mohs hardness: 9.15 Hom khoom xyaw (%6): SiC :292.5 Dawb C: s0.30Fe 0:s1.2 Zoo: Polygonal Xim: Ntsuab: 25kg pob. Silicon Carbide Khoom Taw Qhia: Ntsuab silicon carbide ..

Cubic Silicon Carbide / B-SiC

Cubic silicon carbide, tseem hu ua B-SiC, yog lub cubic crystal system (adamantine crystal type). Lub hardness ntawm cubic silicon carbide /B-SiC yog 9. Cubic silicon carbide / B-SiC tsuas yog thib ob rau chrysospar * 1Ib ntawm.

Dub Silicon Carbide

Dub silicon carbide hmoov yog ua los ntawm cov khoom zoo silicon carbide thiab roj av coke ua raw cov ntaub ntawv, uas yog smelted ntawm ib tug kub ntawm ntau tshaj 2000 degrees nyob rau hauv ib tug tsis kam rauv rau ntau tshaj 46 teev. Lub hardness ntawm dub silicon carbide yog nruab nrab ntawm corundum thiab pob zeb diamond, lub

Khoom Taw Qhia Ntawm Mullite Cib

High alumina refractory nrog mullite (Al2O3•SiO2) ua lub ntsiab crystalline theem. Feem ntau, cov ntsiab lus alumina nyob nruab nrab ntawm 65% thiab 75%. Ntxiv nrog rau mullite, cov ntsiab lus qis alumina kuj muaj me me ntawm iav theem thiab cristobalite; Cov ntsiab lus alumina siab dua kuj muaj a.

WA Dawb Corundum Sand

WA dawb corundum xuab zeb yog ua los ntawm txhuas oxide hmoov ua raw khoom, uas yog crystallized los ntawm electrolysis. Nws hardness yog me ntsis siab dua cov xim av corundum, nrog me ntsis qis toughness, siab purity, muaj zog sib tsoo quab yuam, tsis tshua muaj cua sov tso zis, high efficiency, acid thiab alkali.

Alumina Xuab zeb

Alumina xuab zeb: Shape: Polygonal Mohs Hardness: 9 Specific gravity:3.95-3.97 Bulk ntom: GB10-220:1.6-1.97g /cm3 GB240-1200: {{10}}. 0.01 Fe203: 0.02 CaO + Mgo: 0.02 Xim: Dawb Ntim: 25kg pob

Hluav taws xob Melt Mullite

[Cov khoom specifications] : ntau yam specifications ntawm xuab zeb, hmoov [Production muaj peev xwm] : 50, 000 tons / xyoo 【Application】: metallurgy, ceramics, tsev cov ntaub ntawv, tshuaj, hluav taws xob fais fab thiab casting industries. 【Cov Khoom Taw Qhia】: Hluav taws xob fused mullite yog ib yam zoo.

Dab tsi yog Silicon Carbide

Cov txiaj ntsig ntawm Silicon Carbide

Kev ua tau zoo ntawm qhov kub thiab txias
Lub melting point ntawm silicon carbide cov khoom yog siab li 2700 degree, uas muaj peev xwm tswj tau nws cov yam ntxwv stability thiab lub zog nyob rau hauv high-temperature ib puag ncig, yog li nws yog dav siv nyob rau hauv high-temperature molten hlau, high-temperature heating furnaces, high-temperature petrochemical. thiab lwm yam teb.

Muaj zog corrosion kuj
Silicon carbide muaj kev tiv thaiv corrosion zoo heev thiab tuaj yeem ua haujlwm ruaj khov rau lub sijhawm ntev hauv cov kua qaub, alkali thiab oxidative ib puag ncig.

Siab hardness thiab siab zog
Silicon carbide muaj zog dua thiab muaj zog dua li cov khoom siv ceramic, yog li nws muaj kev hnav zoo thiab cuam tshuam.

Zoo heev thermal conductivity thiab hluav taws xob conductivity
Silicon carbide muaj cov thermal conductivity thiab zoo heev hluav taws xob conductivity, yog li nws yog dav siv nyob rau hauv kev tsim khoom ntawm high-power electronics Cheebtsam thiab radiators.

Properties of SiC

Polytypism ntawm SiC
SiC paub txog nws cov polytypism (cov qauv sib txawv crystalline), tsim los ntawm kev sib tsoo ntawm Si thiab C raws tus thawj axis (C-axis). Lub AaBbCcAaBbCc stacking generates 3C-SiC zinc-blende lattice, AaBbAaBb generates 2H-SiC nrog wurtzite lattice, thiab AaBbAaCcAaBbAaC generates 4H-SiC lattice. Cov ntaub ntawv crystalline sib txawv nrog cov lej sib txawv ntawm cov atoms ib lub xov tooj ntawm tes cuam tshuam rau lub cev lub cev ntawm polytypes vim muaj cov kab hluav taws xob sib txawv thiab cov ceg vibrational.

Band Qauv
Cov ntaub ntawv crystalline sib txawv ntawm SiC muaj qhov sib txawv ntawm qhov sib txawv, xws li 2.4 eV (3C-SiC) txog 3.35 eV (2H-SiC), uas yog qhov tseem ceeb rau kev txiav txim siab lawv cov khoom siv hluav taws xob thiab kho qhov muag. SiC polytypes yog indirect semiconductors, uas txhais tau hais tias cov polytype nrog qhov tsawg tshaj plaws bandgap (3C-SiC) rau qhov uas muaj qhov loj tshaj plaws bandgap (2H-SiC) yuav tsum muaj kev koom tes ntawm phonons (quantized vibrational hom). Txawm hais tias SiC polytypes yog cov khoom siv hluav taws xob tsis ncaj, lawv yog cov neeg sib tw zoo rau kev siv fais fab.

Doping
Doping yog ib txoj hauv kev siv lub cev kom tau txais cov khoom hluav taws xob xav tau ntawm SiC. Nyob rau hauv cov txheej txheem no, ib lub caij, xws li ib tug txais (aluminium / boron / gallium) los yog ib tug pub (nitrogen / phosphorus), yog qhia nyob rau hauv lub Crystal loj hlob theem los hloov nws conductivity. Txij li thaum diffusion tsis yog ib txoj hauv kev ua tau rau dope SiC, ion implantation nrog dopant activation ntawm high-temperature cua sov yog siv los dope SiC. Cov kev tshawb fawb yav dhau los tau tshaj tawm txog kev ua tiav ntawm doping SiC nrog nitrogen rau cov ntawv thov xws li txo qis hluav taws xob poob hauv cov khoom siv hluav taws xob ntsug thiab cov ntawv thov siab.

Cov khoom hluav taws xob
Unintentional doping nrog nitrogen pub thaum lub sij hawm txoj kev loj hlob qhia tau hais tias lawv muaj ntau tshaj electrons thaum lub sij hawm txoj kev loj hlob, qhia n-hom conductivity nyob rau hauv SiC. Doped nitrogen atoms hloov cov pa roj carbon atom ntawm cov chaw lattice, sib txawv ntawm cov ionization zog vim muaj qhov sib txawv hauv zos thiab muaj kev cuam tshuam tshwj xeeb. Tsis tas li ntawd, kev ntsuas Hall pab txiav txim siab qhov concentration ntawm nitrogen pub, piv txwv li kev faib khoom sib npaug ntawm ntau qhov chaw lattice.

Tshuaj Stability
SiC ua kom yooj yim oxidation thiab tsim cov silicon dioxide (SiO2) zaj duab xis, uas maj mam cuam tshuam cov txheej txheem oxidation. Txawm li cas los xij, yog tias cov tshuaj uas tuaj yeem tshem tawm lossis tawg cov silicon dioxide zaj duab xis nyob ib txhij, SiC tuaj yeem oxidized ntxiv. SiC tsis yooj yim yaj hauv cov kua qaub lossis cov hauv paus tab sis tuaj yeem tawm tsam los ntawm alkaline melts yooj yim. Thawj impurities pom nyob rau hauv SiC muaj xws li C thiab SiO2 thiab tus nqi ntawm impurities txawv nyob ntawm seb hom khoom.

Kev siv ntawm Silicon Carbide

01/

Silicon Carbide siv nyob rau hauv tub rog Bulletproof Armor
Silicon carbide yog siv los tsim cov khoom siv phom sij. Cov cuab yeej ntawm no compound uas ua rau nws yuav tsum tau siv rau xws li ib lub hom phiaj yog nws hardness. Cov mos txwv thiab lwm yam khoom tsim kev puas tsuaj yuav tsum tau sib cav nrog cov tawv ceramic blocks uas silicon carbide cov ntaub ntawv. Cov mos txwv tsis tuaj yeem nkag mus rau cov blocks ceramic.

02/

Silicon Carbide siv nyob rau hauv semiconductors
Silicon carbide ua ib qho semiconductor thaum dopants ntxiv rau nws. Dopants zoo li boron thiab txhuas ntxiv rau silicon carbide ua rau nws dhau los ua p-hom semiconductor. Ntawm qhov tod tes, dopants xws li nitrogen thiab phosphorus ntxiv rau silicon carbide ua rau nws dhau los ua n-hom semiconductor. Koj tuaj yeem nyeem cov ntawv no kom paub ntau ntxiv txog qhov sib txawv ntawm p-type semiconductors & n-type semiconductors.

03/

Silicon Carbide siv hauv Abrasives
Silicon carbide feem ntau yog siv los ua abrasive vim tias nws nyuaj npaum li cas. Nws yog siv rau hauv kev tsim cov khoom sib tsoo, cov cuab yeej txiav, thiab cov ntawv xuab zeb. Silicon carbide abrasives feem ntau pheej yig dua li lwm cov abrasives zoo sib xws. Cov abrasives yog siv los zom cov ntaub ntawv xws li steel, aluminium, cam khwb cia hlau, thiab roj hmab.

04/

Silicon Carbide siv nyob rau hauv hluav taws xob tsheb
Silicon carbide yog qhov kev xaiv zoo dua ntawm silicon rau lub zog hluav taws xob tsheb. Cov tsheb fais fab uas siv los ntawm silicon carbide muaj txiaj ntsig zoo thiab siv tau zoo. Tam sim no, ntau lub tuam txhab paub zoo tau siv silicon carbide los txhim kho kev ua haujlwm thiab ntau yam thaum tsim hluav taws xob tsheb, xws li Tesla.

05/

Silicon Carbide siv hauv cov hniav nyiaj hniav kub
Cov qauv zoo ib yam li pob zeb diamond, tsis tau ntau dua lustrous, pheej yig dua, ruaj dua, thiab sib zog dua pob zeb diamond, silicon carbide yog qhov tsim nyog rau lwm txoj hauv pob zeb diamond hauv kev lag luam hniav nyiaj hniav kub.

06/

Silicon Carbide siv hauv roj
Ntxiv nrog rau lwm yam kev siv, silicon carbide yog siv los ua roj. Nws yog siv los ua roj hauv kev tsim steel thiab tsim cov hlau ntshiab dua li lwm cov roj. Nws kuj yog ib tug pheej yig dua thiab ntau environmentally phooj ywg roj.

Yuav Ua Li Cas Xaiv Silicon Carbide

Txheeb xyuas koj cov kev xav tau refractory
Thawj kauj ruam hauv kev xaiv cov khoom siv refractory tsim nyog yog txheeb xyuas daim ntawv thov cov kev xav tau tshwj xeeb. Xav txog qhov kub thiab txias ntawm qhov refractory xav tau los tiv thaiv, tshuaj lom neeg ib puag ncig, thiab kev siv tshwj xeeb. Qhov no yuav pab txo qis cov kev xaiv thiab xyuas kom meej tias cov khoom siv refractory haum raug xaiv.

Tshawb nrhiav cov ntaub ntawv refractory
Thaum koj cov kev xav tau raug txheeb xyuas, nws yog qhov tseem ceeb rau kev tshawb fawb txog ntau hom khoom siv refractory muaj. Xav txog cov thermal shock resistance, tshuaj tiv thaiv, thiab lwm yam tseem ceeb.

Xav txog koj cov peev nyiaj
Thaum xaiv cov khoom siv refractory, nws yog ib qho tseem ceeb uas yuav tau xav txog cov peev nyiaj. Cov khoom siv refractory sib txawv muaj tus nqi sib txawv, thiab xaiv cov khoom siv uas haum rau hauv pob nyiaj siv yog qhov tseem ceeb. Tsis tas li ntawd, nws yog ib qho tseem ceeb los xav txog tag nrho cov tswv cuab tus nqi, nrog rau kev teeb tsa, kev saib xyuas, thiab cov nqi kho.

Raws li kev tsim nyog silicon carbide
Txhawm rau kom tau txais cov neeg siv khoom ntseeg siab, cov chaw tsim khoom silicon carbide feem ntau ua tiav daim ntawv pov thawj zoo ntawm silicon carbide. Yog li thaum peb yuav silicon carbide, peb tuaj yeem tshawb xyuas qhov tsim nyog ntawm silicon carbide chaw tsim khoom. Qhov kev tso cai ntau dua cov ntawv pov thawj yog, qhov zoo dua ntawm silicon carbide yog.

Silicon Carbide ua li cas?

Txoj kev Lely

Thaum lub sijhawm ua haujlwm no, granite crucible heats mus rau qhov kub siab heev, feem ntau yog los ntawm txoj kev induction, mus rau sublimate silicon carbide hmoov. Ib tug graphite pas nrig nrog qis kub suspends nyob rau hauv lub gaseous sib tov, uas inherently tso cai rau cov ntshiab silicon carbide tso nyiaj thiab tsim muaju.

Tshuaj vapor deposition

Xwb, manufacturers loj hlob cubic SiC siv tshuaj vapor deposition, uas yog feem ntau siv nyob rau hauv carbon-based synthesis txheej txheem thiab siv nyob rau hauv lub semiconductor kev lag luam. Nyob rau hauv txoj kev no, cov tshuaj tshwj xeeb sib xyaw ntawm cov roj nkag mus rau hauv lub tshuab nqus tsev thiab sib txuas ua ntej tso rau hauv lub substrate.

Silicon Carbide Cia ceev faj

Orderly cia, tib batch tooj kom deb li deb tau nyob rau hauv kab, kom tsis txhob ua yuam kev nyob rau hauv tus txheej txheem ntawm noj cov khoom.

Silicon carbide micro hmoov muaj lub zog nqus dej, sim kom tsis txhob tshem tawm cov ntaub ntawv pov thawj noo noo; Qhov no tuaj yeem zam tsis txhob ya raws agglomeration, shorten lub sij hawm ziab.

Raws li qhov ua tau kom siv lub hauv paus ntsiab lus ntawm cov khoom ua ntej-hauv thawj-tawm, kom tsis txhob clumping ntawm raw cov ntaub ntawv vim lub sij hawm cia ntau dhau.

yog tias cov hmoov zoo silicon carbide hauv kev thauj mus los ntim ntim, sim khaws cia cais kom tsis txhob muaj plua plav paug.

Nws raug pom zoo tias lub tsev khaws khoom kom deb li deb tau kaw, khaws cia cais, thiab xyuam xim rau cov dej noo, cua thiab nag.

Peb lub Hoobkas

FAQ

Q: Dab tsi yog silicon carbide siv rau?

A: Silicon carbide ntsiab yog siv niaj hnub no hauv melting iav thiab non-ferrous hlau, kev kho cua sov ntawm cov hlau, ntab iav ntau lawm, zus tau tej cov ceramics thiab electronics Cheebtsam, igniters nyob rau hauv pilot teeb rau gas heaters, thiab lwm yam.Cov nram qab no mob (luv luv. -term) Cov teebmeem kev noj qab haus huv tuaj yeem tshwm sim tam sim lossis sai sai tom qab kis rau Silicon Carbide: * Silicon Carbide tuaj yeem ua rau khaus qhov muag thiab qhov ntswg ntawm kev sib cuag. * Muaj pov thawj tsawg uas Silicon Carbide ua rau mob qog noj ntshav hauv cov tsiaj. Nws tuaj yeem ua rau mob qog noj ntshav.

Q: Dab tsi yog cov ntawv thov ntawm SiC hauv cov khoom siv hluav taws xob?

A: Silicon carbide yog ib qho khoom siv hluav taws xob zoo kawg nkaus rau kev siv hluav taws xob, ua tsaug rau tag nrho nws lub peev xwm los tiv thaiv cov hluav taws xob siab, txog li kaum zaus siab dua li cov siv tau nrog silicon. Semiconductors raws li silicon carbide muab cov thermal conductivity ntau dua, kev txav hluav taws xob ntau dua, thiab qis zog poob. SiC diodes thiab transistors tuaj yeem ua haujlwm ntawm ntau zaus thiab qhov kub thiab txias yam tsis muaj kev cuam tshuam kev ntseeg tau. Cov ntawv thov tseem ceeb ntawm SiC li, xws li Schottky diodes thiab FET / MOSFET transistors, suav nrog cov converters, inverters, cov khoom siv fais fab, roj teeb chargers thiab lub cev muaj zog tswj.

Q: Vim li cas SiC kov yeej Si hauv kev siv fais fab?

A: Txawm hais tias yog cov khoom siv hluav taws xob ntau tshaj plaws hauv cov khoom siv hluav taws xob, silicon tab tom pib qhia qee qhov kev txwv, tshwj xeeb tshaj yog nyob rau hauv kev siv hluav taws xob siab. Ib qho tseem ceeb hauv cov ntawv thov no yog bandgap, lossis lub zog sib txawv, muab los ntawm semiconductor. Thaum lub bandgap siab, cov khoom siv hluav taws xob uas nws siv tau me dua, khiav nrawm dua, thiab muaj kev ntseeg siab dua. Nws tuaj yeem ua haujlwm ntawm qhov kub thiab txias, qhov hluav taws xob, thiab zaus dua li lwm yam khoom siv hluav taws xob. Thaum silicon muaj qhov sib txawv ntawm ib ncig ntawm 1.12eV, silicon carbide muaj ze li peb npaug ntawm tus nqi ntawm ib ncig ntawm 3.26eV.

Q: Vim li cas SiC thiaj li muaj qhov hluav taws xob siab?

A: Cov khoom siv fais fab, tshwj xeeb tshaj yog MOSFETs, yuav tsum muaj peev xwm tswj tau cov hluav taws xob siab heev. Ua tsaug rau qhov kev siv hluav taws xob tawg ntawm cov hluav taws xob hluav taws xob txog kaum npaug siab dua li ntawm silicon, SiC tuaj yeem ncav cuag qhov hluav taws xob siab heev, los ntawm 600V mus rau ob peb txhiab volts. SiC tuaj yeem siv ntau dua doping ntau dua li silicon, thiab cov khaubncaws sab nraud povtseg tuaj yeem ua kom nyias nyias. Lub thinner txheej drift, qhov qis nws kuj. Hauv txoj kev xav, muab qhov hluav taws xob siab, qhov kev tiv thaiv ntawm cov txheej drift ib cheeb tsam tuaj yeem raug txo mus rau 1/300 ntawm silicon.

Q: Vim li cas SiC tuaj yeem ua tau zoo tshaj IGBT ntawm cov zaus siab?

A: Hauv cov ntawv thov hluav taws xob siab, IGBTs thiab bipolar transistors feem ntau tau siv yav dhau los, nrog rau lub hom phiaj ntawm kev txo qhov tig-tiv thaiv uas tshwm sim ntawm qhov hluav taws xob tawg siab. Cov cuab yeej no, txawm li cas los xij, muab qhov kev hloov pauv loj, ua rau muaj teeb meem tsim hluav taws xob uas txwv tsis pub lawv siv ntawm cov zaus siab. Siv SiC, nws muaj peev xwm ua tau cov khoom siv, xws li Schottky barrier diodes thiab MOSFETs, uas ua tiav high voltages, tsis tshua muaj kev tiv thaiv thiab ua haujlwm ceev.

Q: Dab tsi impurities yog siv los dope silicon carbide khoom?

A: Hauv nws daim ntawv ntshiab, silicon carbide coj zoo li cov hluav taws xob insulator. Nrog kev tswj hwm qhov sib ntxiv ntawm impurities lossis dopants, SiC tuaj yeem coj tus cwj pwm zoo li semiconductor. P-hom semiconductor tuaj yeem tau txais los ntawm doping nrog txhuas, boron, lossis gallium, thaum impurities ntawm nitrogen thiab phosphorus ua rau muaj N-hom semiconductor. Silicon carbide muaj peev xwm ua tau hluav taws xob nyob rau hauv qee qhov xwm txheej tab sis tsis nyob hauv lwm tus, raws li cov yam ntxwv xws li qhov hluav taws xob lossis kev siv hluav taws xob infrared, pom lub teeb pom kev zoo, thiab ultraviolet rays. Tsis zoo li lwm cov ntaub ntawv, silicon carbide muaj peev xwm tswj tau P-hom thiab N-hom cheeb tsam xav tau rau kev tsim khoom siv ntau yam. Rau cov laj thawj no, SiC yog cov khoom tsim nyog rau cov khoom siv hluav taws xob thiab muaj peev xwm kov yeej cov kev txwv uas muaj los ntawm silicon.

Q: Yuav ua li cas SiC semiconductors ua tau zoo dua thermal tswj dua silicon?

A: Lwm qhov kev ntsuas tseem ceeb yog thermal conductivity, uas yog qhov ntsuas ntawm seb lub semiconductor muaj peev xwm dissipate lub tshav kub nws generates. Yog hais tias ib tug semiconductor tsis muaj peev xwm dissipate tshav kub zoo, ib qho kev txwv yog qhia nyob rau hauv lub siab tshaj plaws kev khiav hauj lwm voltage thiab kub uas lub cuab yeej tuaj yeem tiv taus. Qhov no yog lwm qhov chaw uas silicon carbide outperforms silicon: lub thermal conductivity ntawm silicon carbide yog 1490 W / mK, piv rau 150 W / mK muab los ntawm silicon.

Q: SiC thim rov qab lub sijhawm piv rau Si-MOSFET li cas?

A: SiC MOSFETs, zoo li lawv cov silicon counterparts, muaj lub cev diode. Ib qho ntawm cov kev txwv tseem ceeb uas muab los ntawm lub cev diode yog qhov tsis xav rov qab tus cwj pwm rov qab, uas tshwm sim thaum lub diode hloov tawm thaum nqa qhov zoo rau pem hauv ntej tam sim no. Lub sijhawm rov qab rov qab (trr) yog li dhau los ua qhov ntsuas tseem ceeb los txhais cov yam ntxwv ntawm MOSFET. Daim duab 2 qhia txog kev sib piv ntawm trr ntawm 1000V Si-based MOSFET thiab SiC-based MOSFET. Raws li tuaj yeem pom, lub cev diode ntawm SiC MOSFET yog qhov nrawm heev: qhov tseem ceeb ntawm trr thiab Irr yog me me kom tsis txhob muaj qhov tsis txaus ntseeg, thiab lub zog poob Err tau txo qis heev.

Q: Vim li cas qhov muag muag muag tseem ceeb rau kev tiv thaiv luv luv?

A: Lwm qhov tseem ceeb ntawm SiC MOSFET yog lub sijhawm luv luv (SCWT). Txij li SiC MOSFETs nyob hauv thaj tsam me me ntawm cov nti thiab muaj qhov ceev tam sim no, lawv lub peev xwm los tiv thaiv luv luv Circuit Court uas tuaj yeem ua rau thermal tawg yuav qis dua li cov khoom siv silicon. Hauv qhov xwm txheej, piv txwv li, ntawm 1.2kV MOSFET nrog pob TO247, qhov luv-circuit withstand lub sij hawm ntawm Vdd=700V thiab Vgs=18V yog li ntawm 8-10 μs. Raws li Vgs txo, qhov saturation tam sim no txo qis thiab lub sij hawm tiv taus nce. Raws li Vdd txo qis, cov cua sov tsawg yog tsim thiab lub sij hawm tiv taus ntev dua. Txij li lub sij hawm yuav tsum tau tua SiC MOSFET yog luv heev, thaum lub turnoff tus nqi Vgs yog siab, ib tug siab dI / dt yuav ua rau hnyav voltage spikes. Yog li ntawd, ib tug mos mos turnoff yuav tsum tau siv maj mam txo lub rooj vag voltage, tsis txhob overvoltage peaks.

Q: Vim li cas tus neeg tsav tsheb sib cais yog qhov kev xaiv zoo dua?

A: Ntau yam khoom siv hluav taws xob yog ob qho tib si qis thiab siab voltage circuits, sib cuam tshuam rau ib leeg los ua kev tswj hwm thiab lub zog ua haujlwm. Piv txwv li, ib qho traction inverter, feem ntau suav nrog qhov tsis tshua muaj hluav taws xob thawj sab (lub zog, kev sib txuas lus, thiab kev tswj xyuas hluav taws xob) thiab lwm sab (high voltage circuits, motor, power stage and auxiliary circuits). Tus maub los nyob rau ntawm thawj sab feem ntau siv cov lus qhia tawm tswv yim los ntawm sab hluav taws xob siab thiab muaj kev cuam tshuam rau kev puas tsuaj yog tias tsis muaj qhov thaiv kev sib cais. Ib qho kev sib cais thaiv hluav taws xob cais cov circuits los ntawm thawj zaug mus rau theem nrab ntawm cov ntaub ntawv sib cais hauv av, ua raws li qhov hu ua galvanic cais. Qhov no tiv thaiv tsis xav tau AC lossis DC cov cim tsis raug xa los ntawm ib sab mus rau lwm qhov, ua rau muaj kev puas tsuaj rau cov khoom siv hluav taws xob.

Q: Dab tsi yog qhov tseem ceeb ntawm silicon carbide?

A: Silicon carbide yog abrasive nrov heev nyob rau hauv niaj hnub lapidary vim nws cov kav ntev thiab tus nqi qis ntawm cov khoom. Nws yog, yog li ntawd, tseem ceeb heev rau kev lag luam kos duab. Hauv kev lag luam tsim khoom, qhov sib xyaw no yog siv rau nws qhov nyuaj hauv ntau cov txheej txheem abrasive xws li honing, sib tsoo, dej dav hlau txiav, thiab sandblasting.

Q: Nqe lus piav qhia txog qhov hardness ntawm silicon carbide?

A: Silicon carbide muaj peev xwm tsim tau cov khoom siv tawv tawv heev uas ua rau nws muaj txiaj ntsig zoo rau kev siv hauv tsheb nres thiab clutches, thiab tseem muaj cov tsho tiv thaiv mos txwv. Ntxiv nrog rau kev tuav nws lub zog mus txog 1400 degree, cov ceramic no nthuav tawm qhov kev tiv thaiv corrosion siab tshaj plaws ntawm tag nrho cov ceramics siab heev.

Q: Puas yog silicon carbide soluble hauv dej?

A: Silicon carbide yog insoluble hauv dej. Txawm li cas los xij, nws yog soluble hauv molten alkalis (xws li NaOH thiab KOH) thiab kuj molten hlau. Silicon carbide tuaj yeem suav hais tias yog ib qho organosilicon compound.

Q: Vim li cas silicon carbide thiaj li kim?

A: Tus nqi ntawm ib qho silicon carbide (SiC) nti tuaj yeem sib txawv nyob ntawm ntau yam, suav nrog cov ntawv thov tshwj xeeb, qhov loj me, qhov nyuaj, thiab cov txheej txheem tsim khoom. Feem ntau, SiC chips zoo li yuav kim dua li cov khoom siv silicon ib txwm muaj vim cov khoom siv siab heev thiab cov txheej txheem tsim khoom koom nrog.

Q: Dab tsi yog qhov zoo ntawm silicon carbide?

A: Txij li thaum nws cov pob txha tawg tau yooj yim thiab tswj tau qhov kev txiav txim siab, silicon-carbide abrasives feem ntau yog siv rau kev sib tsoo nyuaj, tsis tshua muaj zog tensile cov ntaub ntawv xws li chilled hlau, marble thiab granite, thiab cov ntaub ntawv uas xav tau kev txiav ntse xws li fibers, roj hmab. tawv los yog tooj liab.Fragile: Silicon carbide cov khoom yog cov khoom tawg yooj yim thiab tsis haum rau qee qhov chaw nrog cov khoom loj thiab hnav yooj yim. 4. Kev ua haujlwm tsis zoo: Lub machinability ntawm silicon carbide cov khoom tsis zoo, thiab kev ua haujlwm nyuaj, yog li nws nyuaj rau kev tsim cov khoom siv silicon carbide nrog cov duab nyuaj.

Q: Puas yog silicon carbide bulletproof?

A: Cov ntaub ntawv ceramic, xws li silicon carbide (SiC), raug suav tias yog qhov zoo tshaj plaws rau kev tso tseg cov mos txwv phom vim lawv lub zog zoo thiab hardiness. SiC tuaj yeem ua ke nrog cov ntaub ntawv rov qab thiab muab tso rau hauv cov tsho tiv thaiv kom muaj kev tiv thaiv lub cev tseem ceeb tiv thaiv txhua qhov kev tawm suab siab.Silicon carbide tshwm sim hauv qhov xwm txheej raws li cov ntxhia tsis tshua muaj hu ua moissanite, uas tau pom thawj zaug hauv 1893 hauv Arizona's Canyon Diablo meteor qhov hluav taws kub.

Q: Puas yog silicon carbide yaj hauv dej?

A: Silicon carbide yog insoluble hauv dej. Txawm li cas los xij, nws yog soluble hauv molten alkalis (xws li NaOH thiab KOH) thiab kuj molten hlau.Lub Xya Hli 2022, MIT Xov Xwm tshaj tawm tias cubic boron arsenide tuaj yeem yog lwm txoj hauv kev rau silicon. Cubic boron arsenide ua tau zoo dua li silicon ntawm kev ua cua sov thiab hluav taws xob.

Q: Puas yog silicon carbide muaj zog dua pob zeb diamond?

A: Silicon carbide nyuaj nrog Mohs hardness ntawm 9.5, uas yog thib ob tsuas yog lub ntiaj teb cov pob zeb nyuaj tshaj plaws. Tsis tas li ntawd, silicon carbide muaj thermal conductivity zoo heev. Nws yog ib hom semiconductor thiab tuaj yeem tiv taus oxidation ntawm qhov kub thiab txias.Silicon carbide (SiC), tseem hu ua carborundum, yog ib qho sib xyaw ntawm silicon thiab carbon nrog cov tshuaj formula SiC.

Q: Dab tsi yog qhov zoo dua silicon carbide lossis tungsten carbide?

A: Silicon Carbide nyob rau hauv hmoov daim ntawv ho nce compressive thiab tensile zog [19]. Tungsten carbide (WC) muaj txiaj ntsig zoo vim nws yog cov khoom siv tiv thaiv hluav taws xob. WC hauv nano hmoov daim ntawv muab kev tiv thaiv ntau dua los ntawm hluav taws xob thiab zoo compressive zog.Tesla tshaj tawm ib tug tshiab powertrain rau lub tsheb yav tom ntej uas nta 75% tsawg silicon carbide Cheebtsam. Chipmakers koom nrog silicon carbide dipped rau ntawm cov xov xwm, txawm hais tias tseem ceeb kev lag luam player Aehr Test Systems tsis pom Tesla cov lus tshaj tawm tias muaj kev cuam tshuam loj rau yav tom ntej xav tau.

Q: Puas tuaj yeem ua silicon carbide txiav iav?

A: Silicon carbide log muaj txiaj ntsig zoo rau kev txiav iav, quartz, ceramics, titanium, tungsten, zirconium, uranium, beryllium thiab germanium, fiber ntau, plastics (xws li phenolics) thiab fiber ntau cov plastics.Qhov tseem ceeb txaus ntshai yog tawv nqaij tiv nrog qhov tshwm sim. carcinogen, los yog nqus tau cov crystalline silica uas yuav ua rau koj lub ntsws puas. Qee lub xeev hauv Teb Chaws Asmeskas, NJ yog ib qho piv txwv, sau cov silicon carbide ua cov khoom phom sij.

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