Silicon carbide (SiC) yog ib qho khoom sib xyaw ua los ntawm carbon thiab silicon thiab paub txog nws cov khoom zoo heev, suav nrog kev tiv taus kev hnav siab, kev tiv taus thermal shock, kev tiv taus corrosion muaj zog thiab kev ua haujlwm thermal siab. Cov khoom no ua rau silicon carbide yog cov khoom siv zoo tagnrho rau ntau yam kev siv hauv ntau yam lag luam, suav nrog aerospace, tshuab tsim, petrochemicals, hlau smelting thiab electronics. Tshwj xeeb tshaj yog tsim rau kev tsim cov khoom siv tiv taus kev hnav thiab cov khoom siv kub siab. Kev txhim kho ntawm cov khoom siv silicon carbide ceramics reaction-sintered tau ua lub luag haujlwm tseem ceeb hauv kev txhim kho cov ntawv thov kev lag luam ntawm cov khoom siv ntau yam no.
Txoj kev ib txwm muaj los tsim cov khoomcov khoom siv silicon carbide uas ua los ntawm cov tshuaj tiv thaivyog siv cov hmoov silicon carbide ua ke nrog me ntsis ntawm cov hmoov carbon. Cov khoom sib xyaw ua ke dhau los ntawm qhov kub siab siliconization reaction los tsim cov khoom siv ceramic ntom ntom. Txawm li cas los xij, cov khoom siv tes ua ib txwm muaj no tsis yog tsis muaj nws qhov tsis zoo. Cov txheej txheem sintering yog tus cwj pwm los ntawm lub sijhawm ntev, kub siab thiab siv hluav taws xob ntau, ua rau cov nqi tsim khoom siab. Raws li kev lag luam xav tau rau silicon carbide ceramic duab thiab cov duab ua rau nyuaj zuj zus, cov kev txwv ntawm cov txheej txheem ib txwm muaj pom tseeb zuj zus.
Nyob rau xyoo tas los no, kev qhia txog silicon carbide nanopowders tau dhau los ua ib qho kev daws teeb meem zoo los txhim kho cov khoom siv kho tshuab ntawm silicon carbide ceramics. Kev siv nanopowders tuaj yeem tsim cov ceramics nrog cov sintered densities siab dua thiab cov zog flexural siab dua. Txawm li cas los xij, tus nqi ntawm silicon carbide nanopowder yog qhov siab dua, feem ntau tshaj 10,000 yuan ib tuj, uas yog ib qho teeb meem loj rau kev siv dav dav thiab kev tsim khoom loj. Qhov kev sib tw nyiaj txiag no xav tau kev tshawb nrhiav lwm cov khoom siv raw thiab cov txheej txheem los ua kom cov khoom siv silicon carbide ceramics ua tau zoo dua thiab pheej yig dua.
Tsis tas li ntawd xwb, lub peev xwm los tsim cov duab nyuaj thiab cov khoom loj dua qhib txoj hauv kev tshiab rau kev siv silicon carbide ceramic. Cov lag luam uas xav tau cov qauv tsim nyuaj thiab cov ntaub ntawv ua tau zoo tuaj yeem tau txais txiaj ntsig los ntawm txoj kev npaj tshiab no. Kev yooj yim tsim thiab lub peev xwm tsim khoom ntau ntawm cov khoom siv silicon carbide ceramics zoo tuaj yeem ua rau muaj kev nce qib loj hauv cov chaw xws li aerospace thiab electronics qhov twg cov khoom siv ua tau zoo yog qhov tseem ceeb.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-09-2024