Hauv cov txheej txheem tseem ceeb ntawm kev tsim khoom lag luam, cov kav dej zoo li "cov hlab ntsha" uas txhawb nqa kev ua haujlwm. Lawv tsis yog tsuas yog yuav tsum tiv taus qhov kev sim ntawm qhov kub thiab txias siab thiab xeb, tab sis kuj daws qhov kev hnav thiab tsim kua muag los ntawm kev yaig ntawm cov khoom. Kev hloov pauv me ntsis tuaj yeem cuam tshuam rau kev ua haujlwm zoo thiab txawm tias ua rau muaj kev phom sij rau kev nyab xeeb. Nyob rau hauv xyoo tas los no, ib hom kav dej tshiab hu uasilicon carbide yeeb nkabtau maj mam nrov zuj zus, thiab nrog nws cov txiaj ntsig zoo ntawm kev ua tau zoo, nws tau dhau los ua qhov kev daws teeb meem zoo tshaj plaws rau ntau qhov xwm txheej kev lag luam. Niaj hnub no, hauv cov lus yooj yim, cia kuv qhia koj txog "lub zog qis qis" no hauv kev lag luam.
Silicon carbide - ib yam khoom siv inorganic uas tsis yog hlau uas muaj qhov nyuaj thib ob tsuas yog pob zeb diamond, tau tsim thiab sintered los ntawm cov txheej txheem tshwj xeeb los ua cov kav dej kev lag luam nrog ntau qhov zoo. Piv nrog peb cov kav hlau thiab cov kav yas ib txwm muaj, nws lub peev xwm "tiv thaiv kev tsim khoom" yog qhov zoo tshaj plaws.
Ua ntej, nws muaj kev tiv thaiv corrosion muaj zog heev. Hauv kev tsim khoom lag luam, nws yog qhov tsis zam kom kov cov xov xwm corrosive xws li cov kua qaub muaj zog, cov alkali muaj zog, thiab cov kua ntsev. Cov kav dej ib txwm yuav sai sai no ntsib kev xeb perforation, uas tsis yog tsuas yog xav tau hloov pauv ntau zaus tab sis kuj tseem yuav ua rau cov khoom xau. Cov khoom siv tshuaj lom neeg ntawm silicon carbide ruaj khov heev. Tsuas yog ob peb yam tshwj xeeb, nws tuaj yeem yooj yim tiv taus qhov xeb ntawm feem ntau cov kua qaub thiab alkalis. Nws zoo li muab "tiv thaiv corrosion armor" rau ntawm cov kav dej, uas ruaj khov zoo li Mount Tai hauv tshuaj lom neeg, electroplating thiab lwm yam xwm txheej corrosion muaj zog.
Qhov thib ob, nws muaj kev tiv taus kub siab heev. Cov kav dej silicon carbide tsis kam hluav taws ntau dua li cov khoom siv ib txwm muaj, thiab lawv tseem tuaj yeem ua haujlwm ruaj khov ntawm qhov kub siab, nrog rau kev tiv taus kub ntev txog li 1350 degrees, zoo meej rau feem ntau ntawm cov xwm txheej kub siab.
Ntxiv mus, qhov kev tiv thaiv hnav tsis muaj qhov sib piv. Thaum thauj cov ntaub ntawv uas muaj cov khoom khov xws li xuab zeb thiab pob zeb, slurry, thiab lwm yam, phab ntsa sab hauv ntawm cov kav dej yuav txuas ntxiv mus rau qhov puas tsuaj thiab hnav, thiab cov kav dej ib txwm yooj yim hnav nyias thiab puas tsuaj. Qhov nyuaj ntawm cov kav dej silicon carbide yog siab heev, thiab lawv yuav luag "tsis muaj kev puas tsuaj" thaum ntsib kev puas tsuaj ntev ntawm cov ntaub ntawv. Lawv lub neej kev pabcuam tau ntev dua piv rau cov kav dej hlau ib txwm muaj, uas tuaj yeem txo qhov teeb meem thiab tus nqi tshwm sim los ntawm kev hloov cov kav dej ntau zaus.
Tsis tas li ntawd xwb, cov kav dej silicon carbide muaj qhov zoo zais cia: cov phab ntsa sab hauv du. Qhov no txhais tau tias cov khoom siv tsis tshua muaj zog thaum thauj mus los, uas tuaj yeem txo kev siv hluav taws xob, thiab kuj tsis tshua muaj kev loj hlob, txo qhov nyuaj ntawm kev saib xyuas thiab ntxuav. Txawm hais tias nws cov nqi yuav khoom pib siab dua me ntsis dua li cov kav dej ib txwm muaj, nws qhov zoo ntawm kev siv nyiaj yog qhov pom tseeb heev vim yog cov nqi saib xyuas, cov nqi hloov pauv, thiab kev txuag hluav taws xob hauv kev siv mus sij hawm ntev.
Niaj hnub nim no, nrog rau kev hloov pauv ntawm kev tsim khoom lag luam mus rau ntsuab thiab ua haujlwm tau zoo, qhov xav tau rau cov khoom siv kav dej tau nce siab zuj zus. Cov kav dej silicon carbide ua lub luag haujlwm tseem ceeb hauv ntau qhov chaw xws li kev tsim tshuaj lom neeg, lub zog tshiab, metallurgy, thiab kev tiv thaiv ib puag ncig, ua tsaug rau lawv "peb lub tswv yim nyuaj" ntawm kev tiv thaiv corrosion, kev tiv thaiv kub siab, thiab kev tiv thaiv hnav, ua rau "tus phab ej tsis pom" hauv kev txhawb nqa kev txhim kho kev lag luam zoo. Kuv ntseeg tias yav tom ntej, cov kav dej muaj zog no yuav nkag mus rau ntau qhov xwm txheej thiab siv nws cov txiaj ntsig thev naus laus zis los tiv thaiv kev tsim khoom lag luam.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-11-2025