Hauv kev tsim khoom lag luam, cov kav dej zoo li "cov hlab ntsha" uas thauj cov khoom siv, tab sis lawv tuaj yeem ntsib kev hem thawj rau kev noj qab haus huv xws li kev hnav, xeb, thiab kub siab. Cov kav dej ib txwm feem ntau tsis tuaj yeem tiv taus lawv ntev, thiab kev saib xyuas ntau zaus tsis tsuas yog ncua kev tsim khoom tab sis kuj ua rau cov nqi nce ntxiv. Kev tshwm sim ntawmsilicon carbide yeeb nkab txheejtau muab "lub tsho tiv thaiv tawv tawv" rau ntawm cov kav dej kev lag luam, daws cov teeb meem no tau yooj yim.
Tej zaum ib txhia neeg yuav xav paub, silicon carbide yog dab tsi tiag? Qhov tseeb, nws yog ib yam khoom siv ceramic tshwj xeeb uas muaj silicon thiab carbon, uas muaj cov noob caj noob ces "ruaj khov thiab ruaj khov". Nws qhov nyuaj yog qhov siab tshaj plaws, thib ob tsuas yog pob zeb diamond. Thaum thauj cov hmoov av thiab cov khoom siv slurry hauv lub neej txhua hnub, txawm tias qhov kev sib txhuam hnyav tshaj plaws kuj nyuaj rau tawm cov cim ntawm nws qhov chaw. Tsis zoo li cov kav hlau ib txwm muaj, lawv yuav sai sai no raug av nyias thiab perforated. Thiab nws cov khoom siv tshuaj lom neeg ruaj khov tshwj xeeb, txawm tias nws yog cov kua qaub thiab alkali tshuaj lom neeg lossis cov slurry corrosive, lawv tsis tuaj yeem yooj yim corrode nws, zam kev pheej hmoo ntawm cov kav dej xeb thiab xau los ntawm cov hauv paus hniav.
Kev tiv taus kub siab kuj yog qhov zoo ntawm cov kav dej silicon carbide. Hauv kev tsim khoom lag luam, ntau yam khoom siv yuav tsum tau thauj mus rau hauv qhov chaw kub siab. Cov kav dej ib txwm muaj feem yuav deformation thiab laus hauv qab kev ci ntev ntawm qhov kub siab, uas cuam tshuam rau kev nyab xeeb ntawm kev thauj mus los. Thiab cov kav dej silicon carbide tuaj yeem tiv taus qhov kub siab heev, txawm tias nws yog cov pa roj kub lossis cov khoom kub, nws tuaj yeem thauj mus los tau zoo nrog kev ruaj khov tag nrho.
Piv rau cov txheej txheem tiv thaiv cov kav dej ib txwm muaj, cov ntaub silicon carbide kuj muaj qee yam tsis muaj kev txhawj xeeb. Nws cov qauv yog ntom, qhov chaw yog du thiab tiaj tus, thiab nws tsis yooj yim rau dai lossis ntsuas thaum xa cov ntaub ntawv. Nws tuaj yeem txo cov khoom seem thiab kev thaiv, thiab ua kom qhov kev thauj khoom ruaj khov. Tib lub sijhawm, nws qhov ceev yog qis dua li ntawm cov hlau, thiab kev sib txuas ntawm cov kav dej yuav tsis ua rau qhov hnyav tag nrho nce ntxiv. Txawm hais tias nws yog kev teeb tsa lossis kev saib xyuas tom qab, nws yooj yim dua thiab kuj tseem tuaj yeem txo qhov hnyav ntawm kev teeb tsa kav dej, hloov kho rau cov xwm txheej kev lag luam nyuaj dua.
Nws tsim nyog hais tias qhov tshuaj lom neeg inertness ntawm silicon carbide nws tus kheej tiv thaiv nws los ntawm kev cuam tshuam nrog cov ntaub ntawv thauj mus los. Txawm tias rau cov ntaub ntawv nrog cov kev xav tau purity siab, tsis tas yuav txhawj txog kev ua qias tuaj los ntawm kev sib xyaw ntawm cov ntaub ntawv hauv pem teb. Txawm hais tias nws yog cov khoom siv raw zoo hauv kev lag luam tshuaj lom neeg lossis cov hmoov purity siab hauv kev lag luam zog tshiab, lawv tuaj yeem thauj mus los nrog kev ntseeg siab. Qhov no kuj yog ib qho laj thawj tseem ceeb vim li cas ntau lub teb kev lag luam siab kawg txaus siab xaiv nws.
Niaj hnub no, cov kav dej silicon carbide tau dhau los ua "kws tshaj lij tiv thaiv" hauv kev thauj mus los hauv kev lag luam, los ntawm kev thauj khoom siv ntxhib hauv cov chaw tsuas thiab lub zog thermal mus rau kev thauj mus los nruab nrab zoo hauv cov tshuaj lom neeg thiab cov roj teeb lithium, nws qhov muaj nyob tuaj yeem pom. Nws siv nws cov kev ua tau zoo heev los pab cov tuam txhab txo qhov zaus ntawm kev saib xyuas kav dej, txuas ntxiv lub neej kev pabcuam khoom siv, thiab ua kom kev thauj mus los hauv kev lag luam ua haujlwm tau zoo dua thiab muaj kev nyab xeeb.
Ua cov kws tshaj lij tshwj xeeb hauv kev ua cov khoom siv silicon carbide industrial ceramics, peb ib txwm ua kom zoo dua qub ntawm cov kav dej silicon carbide, siv cov khoom uas ua tau raws li qhov xav tau ntawm kev lag luam kom ntseeg tau tias muaj kev tsim khoom ruaj khov hauv ntau yam kev lag luam. Cia cov txheej txheem "khaub ncaws tiv thaiv lub hauv paus" no tiv thaiv "txoj kab cawm siav" ntawm kev thauj mus los hauv kev lag luam.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-23-2025