Hais txog Silicon Carbide
Silicon carbide (SiC) yog cov khoom siv semiconductor uas muaj cov silicon (Si) thiab carbon (C), uas yog cov khoom siv dav dav (WBG) tsev neeg. Nws lub cev binding quab yuam muaj zog heev, muab lub semiconductor siab mechanical, tshuaj thiab thermal stability. Qhov sib txawv dav thiab siab thermal stability tso cai rau SiC cov cuab yeej siv rau ntawm qhov kub thiab txias siab tshaj silicon, txawm tias tshaj 200 degree. Lub ntsiab kom zoo dua ntawm silicon carbide hauv kev siv fais fab yog nws qhov tsis tshua muaj drift cheeb tsam tsis kam, uas yog qhov tseem ceeb hauv cov khoom siv hluav taws xob siab.
Silicon carbide abrasive xuab zeb yog ib qho tseem ceeb ntawm cov khoom siv abrasive nrog cov tshuaj lom neeg tshwj xeeb thiab cov yam ntxwv ntawm cov qauv. Silicon carbide abrasive xuab zeb yog tsim los ntawm silicon carbide hais, qhov saum npoo ntawm cov khoom yog polygonal lossis ncig, thiab muaj qhov tawv tawv heev thiab hnav tsis kam. Nws yog dav siv nyob rau hauv hlau ua, ceramic manufacturing, iav ua thiab lwm yam teb, thiab tau dhau los ua ib qho tseem ceeb sib tsoo cuab yeej.
Silicon carbide abrasive xuab zeb muaj ntau yam tshwj xeeb, thawj yog nws cov hardness siab heev. Vim yog cov qauv tshwj xeeb ntawm silicon carbide hais, nws qhov hardness yog ze rau pob zeb diamond, uas tuaj yeem tswj kev ruaj ntseg zoo nyob rau hauv kev sib txhuam ceev thiab siab, yog li nws tuaj yeem tiv thaiv kev hnav thiab crushing ntawm cov khoom thaum lub sij hawm sib tsoo.
Thib ob, silicon carbide abrasive xuab zeb muaj qhov kub thiab txias tsis kam. Vim tias silicon carbide nws tus kheej muaj qhov kub thiab txias tsis kam, yog li silicon carbide sib tsoo xuab zeb nyob rau hauv qhov kub thiab txias ib puag ncig tseem tuaj yeem ua kom ruaj khov thiab sib tsoo cov nyhuv, tsis yooj yim rau caws pliav thiab deformation, haum rau cov khoom siv kub kub sib tsoo.
Tsis tas li ntawd, silicon carbide abrasive xuab zeb kuj muaj cov coefficient tsawg ntawm thermal expansion thiab zoo heev tshuaj stability. Qhov no txhais tau hais tias nyob rau hauv cov txheej txheem sib tsoo, silicon carbide sib tsoo xuab zeb tuaj yeem tswj nws cov duab thiab qhov loj me, tsis yooj yim rau kev cuam tshuam los ntawm ib puag ncig sab nraud. Nyob rau tib lub sijhawm, silicon carbide sib tsoo xuab zeb muaj kev tiv thaiv zoo rau cov kua qaub, alkali thiab lwm yam tshuaj, thiab tuaj yeem ua kom ntev lub neej kev pab cuam ntawm cov cuab yeej sib tsoo.
Kev sib xyaw ua ke ntawm silicon thiab carbon muab cov khoom siv zoo heev, tshuaj lom neeg thiab thermal zog, suav nrog:
High thermal conductivity
Tsawg thermal expansion thiab zoo heev thermal shock kuj
Tsawg zog thiab hloov pauv poob
High zog efficiency,
Kev khiav hauj lwm ntau zaus thiab kub (ua haujlwm kub txog li 200 degree node)
Me me nti loj (tib yam tawg voltage)
Intrinsic diode (MOSFET)
Kev tswj xyuas thermal zoo rau txo cov cua txias
Lub neej ntev