Hauv ntau qhov chaw xws li kev tsim khoom lag luam thiab kev txhim kho lub zog, qhov chaw kub siab feem ntau yog qhov kev sim kawg ntawm kev ua tau zoo ntawm cov khoom siv. Ntawm ntau cov ntaub ntawv tiv taus kub siab,silicon carbidetau dhau los ua "tus thawj coj" hauv kev daws teeb meem kub heev vim nws qhov kev ua tau zoo heev tiv taus cua sov, thiab siv dav hauv cov lag luam tseem ceeb xws li aerospace, lub zog tshiab, metallurgy, thiab lwm yam.
Silicon carbide yog hom khoom siv dab tsi? Yeej, nws yog ib qho sib xyaw ua ke ntawm cov pa roj carbon thiab silicon, uas muaj nyob rau hauv daim ntawv ntawm cov pob zeb tsis tshua muaj hu ua "moissanite" hauv xwm thiab feem ntau tau los ntawm kev tsim khoom cuav hauv kev lag luam. Qhov zoo tshaj plaws ntawm cov khoom siv no yog nws qhov kub thiab txias heev. Txawm tias nyob rau hauv qhov chaw kub siab ntawm ntau txhiab degrees Celsius, nws tuaj yeem tswj tau cov qauv lub cev thiab cov khoom siv tshuaj lom neeg ruaj khov, thiab yuav tsis mos lossis deform zoo li cov hlau ib txwm muaj, thiab nws yuav tsis yooj yim cuam tshuam nrog lwm yam khoom.
Vim li cas silicon carbide thiaj li tiv taus kub heev? Lub ntsiab lus tseem ceeb yog nws cov qauv siv lead ua tshwj xeeb. Cov atoms ntawm silicon carbide raug sib txuas ua ke los ntawm cov bonds muaj zog heev, tsim cov qauv network peb-seem ruaj khov, zoo li tsim lub 'microscopic castle' ruaj khov. Cov qauv no ua rau nws nyuaj rau puas tsuaj ntawm qhov kub siab, tsis yog tsuas yog muaj peev xwm tiv taus qhov hloov pauv kub hnyav xwb, tab sis kuj tiv taus oxidation thiab corrosion ntawm qhov kub siab, muab kev lees paub txhim khu kev qha rau kev ua haujlwm ruaj khov ntawm cov khoom siv hauv qhov chaw kub heev.
Hauv kev siv tiag tiag, qhov kub siab ntawm silicon carbide ua lub luag haujlwm tseem ceeb. Hauv kev siv hluav taws xob tshiab, nws yog siv los tsim cov khoom siv semiconductor uas tiv taus kub siab, uas pab txhawb kev ua haujlwm zoo ntawm cov lag luam xws li cov tsheb fais fab tshiab thiab kev tsim hluav taws xob photovoltaic; Hauv kev lag luam aerospace, nws yog cov khoom siv tseem ceeb rau kev tsim cov khoom siv cav thiab cov khoom siv tiv thaiv cua sov ntawm lub dav hlau, pab cov khoom siv tiv taus qhov kub siab heev uas tsim thaum lub sijhawm ya ceev ceev; Hauv kev lag luam metallurgical, cov khoom siv refractory ua los ntawm silicon carbide tuaj yeem tiv taus qhov kub siab hauv cov cub tawg thiab txuas ntxiv lub neej ua haujlwm ntawm cov khoom siv.
Nrog rau kev nce qib ntawm thev naus laus zis, cov xwm txheej siv silicon carbide tseem nthuav dav. Cov khoom siv zoo li qub no, uas muaj lub zog "kub-resistant gene", muab kev txhawb nqa rau ntau yam kev lag luam kom tawg los ntawm qhov tsis zoo ntawm kev siv tshuab kub siab nrog nws cov txiaj ntsig tshwj xeeb, thiab tau dhau los ua lub zog tseem ceeb hauv kev txhawb nqa kev txhim kho kev lag luam thiab kev tsim kho tshiab. Yav tom ntej, nrog rau kev txhim kho tas mus li ntawm cov kev xav tau ntawm cov khoom siv, silicon carbide yuav ci ntsa iab hauv ntau qhov chaw siab thiab sau ib tshooj tshiab hauv cov khoom siv kub siab.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-04-2025