SIC yog dav siv nyob rau hauv qhov tseem ceeb ntawm cov hlau thiab tsis-ferrous smelting industries nrog nws ruaj khov-temperature tshuaj ua tau zoo, zoo heev kub lub zog, siab hnav tsis kam thiab zoo thermal shock zog, xws li blast furnace cua, puab phab ntsa thiab ceramic khob. , txhua yam ntawm cov khoom siv hauv ob sab phlu ntawm lub qhov cub phab ntsa thiab cov khoom siv rooj tog zaum. Piv nrog rau intervertebral thiab hlau tebchaw, nws muaj zog dua kub thiab creep kuj. Piv nrog oxide ceramics, nws muaj thermal conductivity ntau dua thiab tsis kam ntawm tshav kub poob. Kev kub siab ua haujlwm ntawm silicon carbide refractory rawcov khoom yog raws li nram no:
1. Kub kub antioxidant kev ua tau zoo ntawm SIC refractory khoom
Txawm hais tias SIC muaj kev ua tau zoo, nws tau yooj yim oxidized thaum siv mus sij hawm ntev. Cov kws tshawb fawb hauv tsev thiab txawv teb chaws tau kawm ntau yam kev tshawb fawb ntawm SIC cov txheej txheem oxidation. Cov txiaj ntsig tau pom tias SIC qhov kub siab oxidation tuaj yeem muab faib ua ob hom: inert oxidation thiab nquag oxidation. Thaum O2 faib qis dua 10-4Pa, SIC cov khoom yog SiO roj theem thiab cov oxidation nquag ntawm cov net hnyav raug txo; Thaum O2 ntu siab siab dua 10-4Pa, SIC cov khoom yog SIO2, qhov inert oxidation nce los ntawm qhov hnyav, SIO2 tiv thaiv zaj duab xis ntawm SIO2 tiv thaiv zaj duab xis Tsim tuaj yeem tiv thaiv oxidation los ntawm kev tshwm sim ntxiv; Tab sis thaum oxidation kub siab tshaj 1473K, SiO2 hloov mus rau hauv square quartz ntawm qhov kub thiab txias, uas tshwm sim nyob rau hauv ntim expansion, ua puas lub qauv ntawm cov oxide zaj duab xis, ua rau tawg, uas yuav ua rau oxidation nyob rau hauv cov khoom, uas cuam tshuam rau sab hauv oxidation. , uas cuam tshuam rau sab hauv. Kev pab lub neej ntawm cov khoom siv silicon carbide. Yog li ntawd, kev txhim kho kev ua haujlwm antioxidant ntawm SIC cov ntaub ntawv yog ib qho tseem ceeb uas yuav tsum tau xav txog hauv kev tsim thiab npaj cov khoom siv silicon carbide refractory.
Txawm hais tias silicon carbide refractory raw cov ntaub ntawv muaj cov khoom antioxidant zoo dua, thaum oxidation rau qee qhov kev puas tsuaj rau cov khoom siv yog qhov ua rau tuag taus. Yog li ntawd Nws yog qhov tseem ceeb heev.
2. Kev tiv thaiv kub seismic kev ua haujlwm ntawm SIC refractory khoom
Raws li ib qho tseem ceeb ntawm high-temperature industrial qauv cov ntaub ntawv, silicon carbide refractory raw cov ntaub ntawv kuj muaj siab yuav tsum tau rau nws cov cua sov poob siab kuj. Cov khoom tiv thaiv hluav taws kub seismic ntawm SIC cov ntaub ntawv tsis yog tsuas yog cuam tshuam nrog nws cov qauv micro, loj loj, thiab sab hauv cov duab thiab kev faib tawm. Nws kuj muaj feem xyuam rau lub zog, elastic modulus, thermal taw qhia tus nqi, thermal expansion coefficient, Pine ratio thiab pore tus nqi ntawm cov khoom. Tos rau lub cev muaj zog. Kev txhim kho thiab txhim kho cov cua kub seismic kev ua tau zoo ntawm SIC cov ntaub ntawv yog qhov tseem ceeb rau nws txoj kev siv nyab xeeb thiab ruaj khov.
3. Anti-ice spar erosion kev ua tau zoo ntawm SIC refractory khoom
Vim tias cov kua txhuas txhuas tsis ntub dej rau SIC, thiab muaj cov thermal conductivity siab, kev ua haujlwm siab tshuaj lom neeg thiab cov khoom zoo antioxidant, nws yog siv los ua cov khoom siv rau txhuas electrolytic grooves. Lub smelting ntawm txhuas feem ntau yog raws li ice spar (NA3ALF6) raws li ib tug fuse. Nws yog ua los ntawm electrolytic aluminium aluminium hauv electrolytic grooves. Qhov kub ntawm electrolyte feem ntau yog 1173 txog 1273K. Silicon carbide refractory raw khoom muaj kev ua haujlwm zoo los tiv thaiv dej khov spar yaig. Los ntawm cov txheej txheem ntawm kev yaig, kev yaig feem ntau tshwm sim ntawm cov oxide thiab cov oxides khi rau hauv theem ntawm theem. Nws tuaj yeem txhim kho kev tiv thaiv dej khov spar yaig kev ua haujlwm ntawm silicon carbide refractory khoom.
