Hauv ntau daim ntawv thov kev lag luam kub siab, crucibles ua lub luag haujlwm tseem ceeb ua cov thawv tseem ceeb rau kev tuav thiab ua kom sov cov tshuaj.Cov khoom siv ceramic silicon carbide, nrog lawv cov kev ua tau zoo heev, maj mam dhau los ua qhov kev xaiv zoo tshaj plaws hauv ntau yam lag luam.
1, Dab tsi yog silicon carbide ceramic crucible
Lub thawv ceramic silicon carbide yog lub thawv uas muaj qhov tob hauv qab uas feem ntau yog ua los ntawm cov khoom siv ceramic silicon carbide. Silicon carbide yog ib qho tshuaj uas muaj covalent bonds muaj zog, thiab nws cov tshuaj sib txuas tshwj xeeb ua rau cov crucibles muaj ntau yam zoo heev. Piv rau cov khoom siv iav feem ntau, cov khoom siv ceramic silicon carbide tuaj yeem tiv taus qhov kub siab dua thiab yog cov cuab yeej zoo tshaj plaws rau kev ua haujlwm kub siab.
2, Cov txiaj ntsig ntawm Silicon Carbide Ceramic Crucibles
1. Kev tiv taus kub zoo heev: Silicon carbide ceramic crucibles tuaj yeem tiv taus kub txog li 1350 ℃. Lub zog ntawm cov khoom siv ceramic ib txwm yuav txo qis ntawm 1200 ℃, thaum lub zog khoov ntawm silicon carbide tseem tuaj yeem tswj tau ntawm qib siab ntawm 1350 ℃. Cov yam ntxwv no ua rau nws ua tau zoo hauv kev yaj kub, hlawv thiab lwm yam txheej txheem, muab ib puag ncig kub ruaj khov rau cov ntaub ntawv thiab ua kom ntseeg tau tias cov txheej txheem du.
2. Kev tiv thaiv oxidation zoo: Silicon carbide ceramic crucibles tuaj yeem tswj tau qhov kev tiv thaiv oxidation zoo hauv qhov kub thiab txias. Nrog rau kev nce ntxiv ntawm silicon carbide cov ntsiab lus, qhov kev tiv thaiv oxidation ntawm crucible tau txhim kho ntxiv. Qhov no txhais tau tias nws tsis yooj yim oxidized thiab puas tsuaj thaum siv kub ntev, ua rau nws lub neej ua haujlwm ntev dua, txo qhov zaus ntawm kev hloov crucible, thiab txo cov nqi tsim khoom.
3. Kev ruaj khov tshuaj lom neeg zoo heev: Silicon carbide ceramics tiv taus cov tshuaj corrosive. Hauv kev lag luam uas muaj ntau yam tshuaj lom neeg xws li metallurgy thiab chemical engineering, nws tsis cuam tshuam nrog cov tshuaj lom neeg uas nws kov, yog li ua kom cov khoom yaj lossis cov tshuaj tiv thaiv huv si, zam kev nkag mus rau hauv cov khoom tsis huv, thiab txhim kho cov khoom zoo.
4. Kev tawv thiab hnav tsis kam: Silicon carbide muaj kev tawv siab, ua rau lub crucible tsim tau zoo hnav tsis kam thiab tuaj yeem tiv taus kev hnav lub cev ntawm qhov kub siab. Thaum siv ntev, nws tuaj yeem tswj tau qhov zoo ntawm nws cov duab thiab tsis yooj yim hnav lossis deformed, ntxiv kom ntseeg tau tias nws ua haujlwm tau zoo thiab lub neej ua haujlwm.
3, Cov teb thov ntawm silicon carbide ceramic crucibles
1. Kev lag luam hlau: Txawm hais tias nws yog kev ua kom cov hlau ferrous xws li hlau, lossis kev yaj cov hlau uas tsis yog ferrous thiab lawv cov alloys xws li tooj liab, txhuas, zinc, thiab lwm yam, silicon carbide ceramic crucibles ua lub luag haujlwm tseem ceeb. Nws tuaj yeem tiv taus kev yaig ntawm cov kua hlau kub siab, ua kom ntseeg tau tias cov txheej txheem yaj hlau du, thaum ua kom cov hlau huv thiab txhim kho qhov zoo ntawm cov khoom hlau.
2. Kev lag luam tshuaj lom neeg: siv rau kev tshuaj lom neeg kub thiab kev kho cov xov xwm corrosive. Vim nws qhov kev ruaj khov tshuaj lom neeg zoo heev thiab kev tiv taus kub siab, nws tuaj yeem ua haujlwm ruaj khov thaum ntsib ntau yam tshuaj lom neeg thiab qhov chaw kub siab, ua kom ntseeg tau tias kev ua tiav ntawm cov tshuaj lom neeg thaum tiv thaiv lub crucible nws tus kheej los ntawm kev xeb thiab puas tsuaj.
3. Lub cub tawg rau kev lag luam: siv ua lub thawv cua sov rau kev hlawv ntau yam khoom siv hauv kev lag luam, xws li cov cib uas tiv taus hluav taws. Los ntawm kev siv nws cov thermal conductivity zoo thiab kev tiv taus kub siab, nws tuaj yeem hloov pauv cua sov sai thiab sib npaug, xyuas kom meej qhov zoo ntawm cov khoom siv hlawv, thiab txhim kho kev siv hluav taws xob zoo.
Cov khoom siv silicon carbide ceramic crucibles, nrog rau ntau yam zoo xws li kev tiv taus kub siab, kev tiv taus oxidation, kev tiv taus hnav, thiab kev ruaj khov tshuaj lom neeg, tau qhia txog kev siv zoo hauv ntau yam lag luam thiab yog cov thawv zoo tagnrho hauv kev lag luam kub siab. Nrog rau kev nce qib tas mus li thiab kev tsim kho tshiab ntawm thev naus laus zis, peb ntseeg tias silicon carbide ceramic crucibles yuav raug siv rau ntau qhov chaw thiab muab kev txhawb nqa zoo dua rau kev txhim kho ntawm ntau yam lag luam.
Lub sijhawm tshaj tawm: Tsib Hlis-28-2025