Hauv ntau qhov chaw xws li kev tsim khoom thiab kev tsim hluav taws xob, qhov kub thiab txias ib puag ncig feem ntau yog qhov kawg ntawm kev ua haujlwm ntawm cov khoom siv. Ntawm ntau cov ntaub ntawv kub-resistant,silicon carbidetau dhau los ua "tus thawj coj" hauv kev daws cov teeb meem kub ntxhov siab vim nws qhov ua tau zoo ntawm kev ua haujlwm kub, thiab tau siv dav hauv kev lag luam tseem ceeb xws li aerospace, lub zog tshiab, metallurgy, thiab lwm yam.
Cov khoom siv dab tsi yog silicon carbide? Qhov tseem ceeb, nws yog ib qho kev sib xyaw ua ke ntawm cov pa roj carbon thiab silicon, uas muaj nyob rau hauv daim ntawv ntawm cov ntxhia tsis tshua muaj hu ua "moissanite" nyob rau hauv qhov xwm txheej thiab feem ntau tau los ntawm cov khoom siv dag zog hauv kev lag luam. Qhov zoo tshaj plaws ntawm cov khoom siv no yog nws qhov kub thiab txias tsis kam. Txawm hais tias nyob rau hauv qhov kub thiab txias ntawm ntau txhiab degrees Celsius, nws tuaj yeem tswj tau lub cev ruaj khov thiab cov khoom siv tshuaj lom neeg, thiab yuav tsis muag los yog deform zoo li cov hlau zoo tib yam, thiab nws yuav tsis yooj yim rau lwm yam tshuaj.
Vim li cas silicon carbide thiaj li muaj qhov kub thiab txias tsis kam? Qhov laj thawj tseem ceeb nyob hauv nws cov qauv siv lead ua tshwj xeeb. Cov atoms ntawm silicon carbide yog nruj me ntsis sib koom ua ke los ntawm covalent bonds muaj zog heev, tsim kom muaj kev ruaj khov peb-dimensional network qauv, zoo li tsim lub 'microscopic castle'. Cov qauv no ua rau nws nyuaj rau kev puas tsuaj ntawm qhov kub thiab txias, tsis tsuas yog tuaj yeem tiv taus qhov kub thiab txias hloov, tab sis kuj tiv taus oxidation thiab corrosion ntawm qhov kub thiab txias, muab kev ruaj ntseg lav rau kev ua haujlwm ruaj khov ntawm cov cuab yeej hauv huab cua.
Hauv kev siv tswv yim, qhov kub tsis kam ntawm silicon carbide plays lub luag haujlwm tsis tuaj yeem hloov pauv. Nyob rau hauv lub tshav pob ntawm lub zog tshiab, nws yog siv los tsim high-temperature resistant semiconductor li, uas yuav pab txhawb kev ua hauj lwm zoo ntawm kev lag luam xws li tshiab zog tsheb thiab photovoltaic zog tiam; Nyob rau hauv aerospace teb, nws yog ib tug tseem ceeb raw cov ntaub ntawv rau kev tsim engine Cheebtsam thiab spacecraft thermal tiv thaiv cov ntaub ntawv, pab cov cuab yeej tiv taus huab cua kub generated thaum lub sij hawm high-ceev davhlau; Hauv kev lag luam metallurgical, cov ntaub ntawv refractory ua los ntawm silicon carbide tuaj yeem tiv taus qhov kub thiab txias ntawm qhov cub thiab ua kom lub neej ntev ntawm cov khoom siv.
Nrog kev nce qib ntawm kev siv thev naus laus zis tas li, daim ntawv thov scenarios ntawm silicon carbide tseem nthuav dav. Cov khoom zoo li no, uas muaj lub zog "kub-resistant gene", yog muab kev txhawb nqa rau ntau yam kev lag luam kom tawg los ntawm lub fwj ntawm high-temperature technology nrog nws cov txiaj ntsig tshwj xeeb, thiab tau dhau los ua lub zog tseem ceeb hauv kev txhawb nqa kev lag luam thiab kev tsim kho tshiab. Nyob rau hauv lub neej yav tom ntej, nrog kev txhim kho txuas ntxiv ntawm cov khoom siv kev ua tau zoo, silicon carbide yuav muaj tseeb ci nyob rau hauv ntau qhov chaw siab thiab sau ib tshooj tshiab hauv cov ntaub ntawv kub-resistant.
Post lub sij hawm: Nov-04-2025