Zirconium Mullite Cib
Pom tseeb Porosity %:Tsawg dua los yog sib npaug li 17
Qhov ntom ntom g / cm3:Ntau dua lossis sib npaug rau 3.15
Txias Crushing Strength Mpa:Ntau dua lossis sib npaug li 90
20-1000 degree Thermal Expansion % (x 10-6):0-0.6
Pyrometric Cone Equivalent degree SK:31
Daim ntawv thov ntawm zirconium mullite cib: sintered zirconium mullite refractory muaj qhov kub thiab txias tsis kam, corrosion kuj, feem ntau yog siv rau lub neej ntev lub qhov ncauj nplhaib, tank hauv qab, tank sab sauv qauv.
Sintered zircon mullite cib yog sintered AZS khoom uas muaj zircon, uas yog tsim los ntawm sintering (los yog electromelting) mullite los yog corundum calcined bauxite coarse hais thiab zircon pob zeb nyob rau hauv arbitrary proportions, ntxiv rau binder firing. Qhov hluav taws kub kub txiav txim siab tag nrho cov decomposition ntawm zircon hais, me ntsis decomposition ntawm qhov chaw los yog tsis muaj decomposition ntawm tag nrho cov. Sintered zirconium mullite refractory muaj qhov kub thiab txias tsis kam thiab corrosion kuj. Txawm li cas los xij, nyob rau hauv qhov kub thiab txias ntawm ZrO2 theem hloov, nws yog rhiab heev rau thermal shock.
Los ntawm kev qhia ZrO2 rau hauv Al2O3-sio2 cib los txhim kho cov qauv ntawm mullite, tuaj yeem txhim kho cov tshuaj tiv thaiv kev yaig ntawm mullite, tiv thaiv tshav kub thiab txo qhov nthuav dav coefficient, Zro2- muaj mullite cib, hu ua zirconium mullite cib, feem ntau yog tau los ntawm hluav taws xob melting txoj kev, tab sis kuj pab tau sintering txoj kev ntau lawm. Sintered zirconium mullite cib yog ib qho tshwj xeeb refractory ua los ntawm kev siv cov alumina thiab zircon mloog zoo li raw cov ntaub ntawv thiab qhia zirconia rau hauv mullite matrix los ntawm cov txheej txheem sintering. Cov khoom siv hluav taws xob kub kub ntawm mullite tuaj yeem txhim kho tau zoo los ntawm kev qhia zirconia rau hauv mullite cib thiab siv cov theem hloov pauv toughening ntawm zirconia. Zirconia tuaj yeem txhawb nqa sintering ntawm cov khoom siv mullite, thiab qhov sib ntxiv ntawm ZrO2 tuaj yeem ua kom cov txheej txheem sintering densification ntawm ZTM cov ntaub ntawv vim yog qhov qis melting point thiab tsim cov khoom seem. Thaum cov feem loj ntawm ZrO2 yog 30%, qhov txheeb ze theoretical ntom ntawm cov billet sintered ntawm 1530 degree nce mus txog 98%, lub zog ncav cuag 378MPa, thiab lub toughness mus txog 4.3MPa•m1/2.
Nws yog ib qho nyuaj los tswj cov txheej txheem ntawm zirconium mullite cib ua los ntawm cov alumina thiab zircon los ntawm cov tshuaj tiv thaiv sintering vim hais tias cov tshuaj tiv thaiv thiab sintering yog nqa tawm ib txhij. Feem ntau, thaum lub sij hawm sintering, nws yog thawj zaug tuav ntawm 1450 degree rau densitize, thiab ces rhuab mus rau 1600 degree rau cov tshuaj tiv thaiv. ZrSiO4 yog decomposed rau hauv ZrO2 thiab SiO2 ntawm qhov kub siab tshaj 1535 degree, nyob rau hauv uas SiO2 thiab Al2O3 react los tsim mullite. Vim lub decomposition ntawm ZrSiO4, qee cov kua theem tshwm. Ntxiv mus, qhov decomposition ntawm ZrSiO4 tuaj yeem ua kom zoo dua cov khoom thiab ua kom cov cheeb tsam tshwj xeeb, yog li txhawb sintering.
Cov txiaj ntsig tau pom tias thaum qhov sib ntxiv ntawm zircon tsawg dua 54.7%, microstructure ntawm cov qauv sintered maj mam hloov los ntawm columnar corundum mus rau columnar mullite nrog rau qhov sib ntxiv ntawm zircon. Lub siab kub flexural lub zog ntawm cov qauv (1400. C) Nws kuj nce nrog cov ntsiab lus ntawm zirconia, thiab tus nqi loj tshwm sim thaum cov ntsiab lus zirconia yog 23.7%, thiab tom qab ntawd lub zog txo. Qhov sib ntxiv ntawm zircon pab txhim kho cov thermal poob siab.
| Yam khoom | ZM-17 | ZM-20 (Zirmul) | ZM-25 (Vista) | ZM-30 | ZM-11 | |
| Tshuaj muaj pes tsawg leeg | Al2O3 | Ntau dua lossis sib npaug li 70 | Ntau dua lossis sib npaug li 59 | Ntau dua lossis sib npaug li 57 | Ntau dua lossis sib npaug li 47 | Ntau dua lossis sib npaug li 72 |
| ZrO2 | Ntau dua lossis sib npaug li 17 | Ntau dua lossis sib npaug rau 19.5 | Ntau dua lossis sib npaug li 25.5 | Ntau tshaj los yog sib npaug rau 30 | Ntau dua lossis sib npaug 11 | |
| SiO2 | Tsawg dua los yog sib npaug li 12 | Tsawg dua los yog sib npaug li 20 | Tsawg dua lossis sib npaug li 14.5 | Tsawg dua los yog sib npaug li 20 | Tsawg dua los yog sib npaug li 12 | |
| Fe2O3 | Tsawg dua lossis sib npaug rau 0.5 | Tsawg dua lossis sib npaug rau 0.5 | Tsawg dua lossis sib npaug rau 0.5 | Tsawg dua lossis sib npaug rau 0.3 | Tsawg dua lossis sib npaug rau 0.5 | |
| Pom tseeb Porosity % | Tsawg dua los yog sib npaug li 17 | Tsawg dua los yog sib npaug li 17 | Tsawg dua los yog sib npaug li 17 | Tsawg dua los yog sib npaug li 18 | Tsawg dua los yog sib npaug li 17 | |
| Qhov ntom ntom g / cm33 | Ntau dua lossis sib npaug rau 3.15 | Ntau dua lossis sib npaug rau 2.95 | Ntau dua lossis sib npaug rau 3.15 | Ntau dua lossis sib npaug rau 3.10 | Ntau dua lossis sib npaug rau 3.1 | |
| Txias Crushing Zog Mpa | Ntau dua lossis sib npaug li 90 | Ntau dua los yog sib npaug rau 100 | Ntau tshaj los yog sib npaug rau 120 | Ntau dua los yog sib npaug rau 100 | Ntau dua lossis sib npaug li 90 | |
| {{0}}.1Mpa Refractoriness Nyob rau hauv Load T0.6 degree | Ntau dua lossis sib npaug rau 1650 | Ntau dua lossis sib npaug rau 1650 | Ntau dua lossis sib npaug rau 1650 | Ntau dua lossis sib npaug rau 1650 | Ntau dua lossis sib npaug rau 1630 | |
| Permanent Linear Change On Reheating (%) 1500 degree X2h | ±0.3 | ±0.3 | ±0.3 | ±0.3 | ±0.3 | |
| 20-1000 degree Thermal Expansion % (x 10-6) | 0-0.6 | 0-0.6 | 0-0.6 | 0-0.6 | 0-0.6 | |
| Thermal conductivity (Average 800 degree) W / (MK) | Tsawg dua lossis sib npaug rau 2.19 | Tsawg dua lossis sib npaug rau 2.19 | Tsawg dua lossis sib npaug li 2.1 | Tsawg dua lossis sib npaug li 2.1 | Tsawg dua lossis sib npaug rau 2.19 | |
| Pyrometric Cone Equivalent degree SK | 31 | 31 | 31 | 31 | 31 | |
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