Tom qab cov thev naus laus zis tshiab uas siv hluav taws xob sai dua thiab cov cav dav hlau ua haujlwm tau zoo dua, muaj ib yam khoom zoo li qub tab sis muaj zog heev -silicon carbide ceramicsCov khoom siv ceramic no uas muaj cov pa roj carbon thiab silicon, txawm hais tias tsis tshua muaj neeg tham txog li cov chips thiab roj teeb, tau dhau los ua "tus phab ej zais" hauv ntau qhov chaw siab vim nws qhov kev ua tau zoo "hard core".
Qhov tshwj xeeb tshaj plaws ntawm cov khoom siv silicon carbide ceramics yog lawv "kev hloov pauv tau zoo heev" rau qhov chaw ib puag ncig hnyav. Cov ntaub ntawv ib txwm muaj feem yuav ua rau lub zog poob qis ntawm qhov kub siab, zoo ib yam li "kev ua tsis tiav ntawm cua sov", tab sis lawv tseem tuaj yeem tswj tau ntau dua 80% ntawm lawv lub zog txawm tias ntawm 1200 ℃, thiab tuaj yeem tiv taus qhov cuam tshuam loj heev ntawm 1600 ℃ hauv lub sijhawm luv luv. Qhov kev tiv thaiv cua sov no ua rau nws sawv tawm hauv cov xwm txheej kub siab, xws li ua cov khoom siv tseem ceeb rau cov khoom kub kawg ntawm cov cav dav hlau. Tib lub sijhawm, nws qhov nyuaj yog qhov thib ob tsuas yog pob zeb diamond, nrog Mohs hardness ntawm 9.5. Ua ke nrog kev tiv thaiv corrosion zoo heev, nws tuaj yeem tswj tau qhov ruaj khov hauv cov kua qaub thiab alkali muaj zog, thiab nws lub neej ua haujlwm ntau dua li cov ntaub ntawv hlau ib txwm muaj.
Hauv cov teb ntawm hluav taws xob thiab kev tswj hwm thermal, silicon carbide ceramics tau ua pov thawj cov yam ntxwv ntawm "tus neeg ua si txhua yam". Nws cov thermal conductivity yog ntau zaus ntawm cov alumina ceramics ib txwm muaj, uas yog sib npaug rau kev teeb tsa "lub dab dej kub zoo" ntawm cov khoom siv hluav taws xob, uas tuaj yeem tshem tawm cov cua sov tsim tawm thaum lub sijhawm ua haujlwm ntawm cov khoom siv.
Niaj hnub nim no, qhov muaj cov khoom siv silicon carbide ceramics tau nthuav dav thoob plaws ntau qhov chaw tseem ceeb. Hauv cov tsheb fais fab tshiab, nws tau zais rau hauv lub zog module, ua rau lub sijhawm them sai dua thiab ntev dua; Hauv thaj chaw aerospace, cov khoom siv turbine ua los ntawm nws tuaj yeem txo qhov hnyav ntawm cov khoom siv thiab ua rau lub zog nce ntxiv; Hauv kev tsim khoom semiconductor, nws cov yam ntxwv qis thermal nthuav dav ua rau cov khoom siv precision xws li cov tshuab lithography raug dua thiab ruaj khov; Txawm tias nyob rau hauv kev lag luam nuclear, nws tau dhau los ua cov khoom siv tseem ceeb rau cov reactors vim nws qhov zoo ntawm kev tiv thaiv hluav taws xob.
Yav dhau los, tus nqi yog ib qho kev cuam tshuam rau kev nrov ntawm silicon carbide ceramics, tab sis nrog kev loj hlob ntawm kev npaj thev naus laus zis, nws tus nqi tau maj mam txo qis, thiab ntau lub lag luam pib txaus siab rau cov txiaj ntsig ntawm qhov kev hloov pauv khoom siv no. Los ntawm cov tsheb fais fab rau kev mus ncig txhua hnub mus rau lub dav hlau rau kev tshawb nrhiav qhov chaw, cov khoom siv "tawv tawv" no zoo li tsis pom tseeb tab sis tsav tsheb thev naus laus zis mus rau yav tom ntej zoo dua thiab txhim khu kev qha hauv txoj hauv kev qis tab sis muaj zog.
Lub sijhawm tshaj tawm: Cuaj hlis-23-2025