Silicon carbide manufacturers yuav ua li cas los txhim kho lub purity ntawm silicon carbide?
Nov 12, 2024Tso lus
Yuav ua li cas txhim kho qhov purity ntawm silicon carbide?
Txhawm rau txhim kho qhov purity ntawm silicon carbide, xaiv cov khoom siv raw, cov txheej txheem ntau lawm, cov tshuaj tiv thaiv, cov txheej txheem purification thiab lwm yam yuav tsum tau pib txo cov ntsiab lus impurity thiab txhim kho cov tshuaj tiv thaiv. Cov hauv qab no yog ob peb txoj hauv kev los txhim kho purity ntawm silicon carbide:
Yuav ua li cas txhim kho qhov purity ntawm silicon carbide?1. Xaiv cov khoom siv purity siab
Cov ntaub ntawv tseem ceeb ntawm silicon carbide yog quartz xuab zeb (SiO₂) thiab carbon (xws li coal coke lossis roj av coke). Kev xaiv cov purity purity quartz xuab zeb thiab cov khoom siv roj carbon zoo tuaj yeem txo qhov chaw ntawm impurities hauv cov txheej txheem ntau lawm.
Quartz xuab zeb yuav tsum tau xaiv nrog siab purity thiab tsis muaj impurity minerals, thiab cov khoom siv carbon (xws li roj av coke) kuj yuav tsum tau xaiv nrog tsawg tshauv, tsawg leej faj thiab tsawg phosphorus hom.
Yuav ua li cas txhim kho qhov purity ntawm silicon carbide?2. Txhim kho cov txheej txheem ntau lawm
Silicon carbide feem ntau yog tsim los ntawm kev txo qis carbothermal, uas yog, quartz xuab zeb thiab carbon yog rhuab mus txog 2000 ° C hauv lub cub hluav taws xob los tsim silicon carbide. Kev ua kom zoo ntawm cov txheej txheem tsis xws li qhov kub thiab txias, lub sijhawm thiab cua tuaj yeem txo qhov tsim ntawm impurities.
Los ntawm kev tswj cov tshuaj tiv thaiv kub thiab tswj qhov chaw ruaj khov (xws li kev tiv thaiv roj inert), tiam ntawm cov khoom siv thiab cov impurities tuaj yeem raug txo qis thiab cov purity ntawm silicon carbide tuaj yeem txhim kho.
Yuav ua li cas txhim kho qhov purity ntawm silicon carbide?3. Rov ua dua sintering purification
Tom qab ib qho sintering, silicon carbide tseem tuaj yeem muaj cov khoom tsis huv thiab cov khoom siv tsis zoo. Los ntawm ntau yam sintering, impurities thiab tsis tiav cov tshuaj tiv thaiv residue tuaj yeem raug tshem tawm ntxiv, thiab purity ntawm silicon carbide tuaj yeem txhim kho.
Txoj kev no yog qhov tshwj xeeb tshaj yog tsim rau kev tsim cov high-purity silicon carbide hmoov rau tshwj xeeb teb xws li semiconductors, hnub ci zog, thiab lwm yam.
Yuav ua li cas txhim kho qhov purity ntawm silicon carbide?4. Kev kho acid thiab alkali
Soaking silicon carbide nrog cov kua qaub (xws li hydrochloric acid, nitric acid, hydrofluoric acid) thiab cov hauv paus (xws li sodium hydroxide) tuaj yeem tshem tawm cov hlau impurities (xws li hlau, txhuas, thiab lwm yam) thiab oxides ntawm qhov chaw thiab sab hauv.
Acid-base kev kho mob feem ntau yog ib kauj ruam tseem ceeb hauv kev npaj cov high-purity silicon carbide, tshwj xeeb tshaj yog rau photoelectric thiab semiconductor qib silicon carbide. Tom qab kev kho mob, nws yuav tsum tau muab ntxuav kom huv si nrog dej ntshiab kom tshem tawm cov residual acid thiab alkali Cheebtsam.
Yuav ua li cas txhim kho qhov purity ntawm silicon carbide?5. Kub kub chlorination
Kub chlorination yog ib txoj hauv kev zoo los tshem tawm impurities. Los ntawm kev qhia txog cov roj chlorine lossis carbon tetrachloride ntawm qhov kub thiab txias, impurities (xws li hlau, aluminium, calcium, thiab lwm yam) tuaj yeem hloov mus rau hauv cov tshuaj chloride tsis zoo thiab tsis muaj zog, yog li txhim kho cov purity ntawm silicon carbide.
Txoj kev no feem ntau yog siv los tsim ultra-high purity silicon carbide hmoov, tab sis cov tshuaj tiv thaiv yuav tsum tau tswj kom tiv thaiv cov silicon carbide nws tus kheej los ntawm chlorinated.
Yuav ua li cas txhim kho qhov purity ntawm silicon carbide?6. Txoj kev cais lub cev
Sib nqus impurities xws li hlau thiab titanium tuaj yeem raug tshem tawm los ntawm kev sib cais ntawm lub cev xws li sib nqus sib nqus thiab sib cais sib nqus. Cov impurities no yuav raug qhia nyob rau hauv cov txheej txheem silicon carbide ntau lawm thiab tuaj yeem txo tau zoo los ntawm kev siv lub cev.
Kev sib cais ntawm lub cev feem ntau yog siv los ua txoj kev kho mob ua ntej, uas yog zoo dua siv nrog rau cov tshuaj hauv cov txheej txheem purification tom ntej.
Yuav ua li cas txhim kho qhov purity ntawm silicon carbide?7. Ultrafine sib tsoo thiab tshuaj ntsuam
Kev sib tsoo ultrafine thiab sieving ntawm silicon carbide tuaj yeem tshem tawm cov khoom loj ntawm impurities. Ultrafine sib tsoo ua raws li kub kub sintering tuaj yeem txo cov impurities thiab txhim kho cov khoom purity.
Ultrafine hmoov muaj purity siab thiab zoo dua rau daim ntaub ntawv nrog nruj particle loj thiab purity yuav tsum tau nyob rau hauv hluav taws xob cov ntaub ntawv, optics thiab lwm yam teb.
Yuav ua li cas txhim kho qhov purity ntawm silicon carbide?8. Vapor Deposition (CVD)
Ultra-high purity silicon carbide films tuaj yeem npaj los ntawm vapor deposition los ntawm kev tso silicon carbide rau ntawm qhov chaw ntawm qhov kub ntawm qhov kub uas siv cov pa roj, xws li silane.
Txoj kev no yog tsim rau kev tsim cov high-purity silicon carbide nyias zaj duab xis rau cov khoom siv semiconductor thiab optoelectronics, tab sis tus nqi siab thiab cov zis me me, feem ntau yog cov khoom muaj nqis ntxiv.
Yuav ua li cas txhim kho qhov purity ntawm silicon carbide?9. Plasma purification
Siv qhov kub thiab txias ib puag ncig ntawm cov ntshav plasma, qee qhov impurities hauv silicon carbide tuaj yeem raug tshem tawm, tshwj xeeb tshaj yog oxide thiab sulfide impurities.
Plasma purification yog feem ntau haum rau siv nyob rau hauv zus tau tej cov ultra-high purity silicon carbide, vim hais tias ntawm cov nqi siab ntawm cov khoom, nws yog feem ntau yog siv rau kev npaj me me high-purity silicon carbide.
Yuav ua li cas txhim kho qhov purity ntawm silicon carbide?Muab xam
Cov txheej txheem ntawm kev txhim kho cov purity ntawm silicon carbide muaj ntau haiv neeg, los ntawm kev xaiv ntawm high-purity raw cov ntaub ntawv, optimization txheej txheem, acid-base kev kho mob, high-temperature chlorination, lub cev sib cais thiab lwm txoj kev, impurities yuav maj mam tshem tawm, thiab high- purity silicon carbide tuaj yeem tau txais. Rau kev siv tshwj xeeb (xws li semiconductors, optoelectronic devices, thiab lwm yam), nws yuav tsim nyog los ua ke ntau yam kev ua kom huv huv kom ua tiav cov kev cai purity nruj.
Yog tias koj xav tau, thov hu rau peb hauv qab no.
