Khoom taw qhia thiab daim ntawv thov ntawm dub silicon carbide
Dub silicon carbide(abbreviated li dub silicon carbide) yog ib qho khoom siv uas tsis yog xim hlau ua los ntawm quartz xuab zeb thiab roj av coke ua cov ntaub ntawv tseem ceeb thiab smelted ntawm qhov kub thiab txias hauv qhov cub ua haujlwm. Nws muaj cov xim dub-grey los yog tsaus dub tsos, tsis tshua muaj siab hardness, zoo thermal conductivity thiab tshuaj stability. Nws yog cov khoom siv raw khoom zoo heev thiab siv dav hauv cov khoom siv abrasives, cov ntaub ntawv refractory, metallurgy, ceramics, electronics thiab lwm yam kev lag luam.
Ⅰ. Cov yam ntxwv ua haujlwm ntawm cov xim dub silicon carbide
Mohs hardness ntawmdub silicon carbideyog siab li 9.2, thib ob tsuas yog pob zeb diamond thiab cubic boron nitride, thiab muaj zog hnav tsis kam thiab cuam tshuam tsis kam. Nws cov ntsiab lus melting yog li 2700 ° C, thiab nws tuaj yeem tswj cov qauv kev ruaj ntseg hauv qhov kub thiab txias thiab tsis yooj yim rau decompose lossis deform. Tsis tas li ntawd, nws muaj cov thermal conductivity zoo thiab tsis tshua muaj thermal expansion coefficient, thiab tseem qhia tau zoo heev thermal shock stability nyob rau hauv qhov kub thiab txias siab.
Nyob rau hauv cov nqe lus ntawm cov khoom siv tshuaj, dub silicon carbide muaj corrosion kuj zoo rau acids thiab alkalis, thiab tshwj xeeb tshaj yog haum rau kev lag luam siv nyob rau hauv hnyav ib puag ncig. Nws cov conductivity siab kuj ua rau nws ua lwm yam khoom siv rau tej yam khoom siv hluav taws xob cua sov thiab semiconductor teb.
Ⅱ. Cov khoom tseem ceeb cov ntaub ntawv thiab specifications
Dub silicon carbide tuaj yeem ua rau ntau hom ntawv raws li qhov sib txawv ntawm qhov ntau thiab tsawg thiab siv:
Cov khoom siv thaiv: cov muaju loj tom qab smelting, feem ntau siv rau reprocessing los yog metallurgical additives;
Granular xuab zeb (F xuab zeb / P xuab zeb): siv los ua kev sib tsoo log, sandblasting abrasives, sandpaper, thiab lwm yam.;
Micro hmoov (W, D series): siv rau ultra-precision sib tsoo, polishing, ceramic sintering, thiab lwm yam .;
Nano-theem micro hmoov: siv rau high-end electronic ceramics, thermal conductive composite cov ntaub ntawv, thiab lwm yam.
Qhov loj me me ntawm F16 mus rau F1200, thiab qhov me me ntawm cov hmoov micro tuaj yeem ncav cuag qib nanometer, uas tuaj yeem hloov kho raws li kev xav tau ntawm cov ntawv thov sib txawv.
Ⅲ. Daim ntawv thov tseem ceeb ntawm cov xim dub silicon carbide
1. Abrasives thiab cov cuab yeej sib tsoo
Abrasives yog cov tsoos tshaj plaws thiab feem ntau siv rau thaj tsam ntawm cov xim dub silicon carbide. Ua kom zoo dua ntawm nws cov hardness siab thiab nws tus kheej-sharpening zog, dub silicon carbide yuav siv tau los tsim ntau yam khoom abrasive, xws li sib tsoo log, txiav discs, sandpaper, sib tsoo taub hau, sib tsoo pastes, thiab lwm yam., uas yog haum rau kev sib tsoo thiab ua cov ntaub ntawv xws li cam khwb cia hlau, hlau, non-ferrous hlau, ceramics, iav, quartz.
Nws qhov zoo yog kev sib tsoo ceev ceev, tsis yooj yim rau clog, thiab kev ua haujlwm siab. Nws yog dav siv nyob rau hauv hlau ua, machinery manufacturing, tsev kho kom zoo nkauj thiab lwm yam lag luam.
2. Cov khoom siv refractory
Vim nws qhov kub thiab txias stability thiab corrosion kuj, dub silicon carbide yog dav siv nyob rau hauv high-temperature refractory ntaub ntawv. Nws tuaj yeem ua rau hauv silicon carbide cib, rauv hauv ob sab phlu, crucibles, thermocouple tiv thaiv raj, cov cuab yeej kiln, nozzles, tuyere bricks, thiab lwm yam., thiab yog dav siv nyob rau hauv high-temperature industries xws li metallurgy, non-ferrous hlau, hluav taws xob, iav, cement, thiab lwm yam.
Tsis tas li ntawd, cov ntaub ntawv silicon carbide muaj cov khoom zoo antioxidant nyob rau hauv high-temperature oxidizing atmospheres thiab haum rau siv nyob rau hauv qhov tseem ceeb ntawm kub blast furnaces, blast furnaces thiab lwm yam khoom siv.
3. Kev lag luam metallurgical
Hauv cov txheej txheem metallurgical xws li steelmaking thiab casting, dub silicon carbide tuaj yeem siv los ua deoxidizer, ua kom sov thiab rov ua dua tshiab. Vim nws cov ntsiab lus carbon siab thiab tso tawm sai sai, nws tuaj yeem txhim kho smelting efficiency thiab txhim kho qhov zoo ntawm cov hlau molten. Nyob rau tib lub sijhawm, nws tseem tuaj yeem txo cov ntsiab lus impurity hauv cov txheej txheem smelting thiab ua lub luag haujlwm hauv purifying molten steel.
Qee cov hlau mills kuj ntxiv qee qhov kev faib ua feem ntawm silicon carbide los kho cov muaj pes tsawg leeg hauv cov smelting ntawm cam khwb cia hlau thiab cov hlau ductile kom txuag tau tus nqi thiab txhim kho kev ua haujlwm ntawm castings.
4. Ceramics thiab cov khoom siv hluav taws xob
Dub silicon carbide kuj yog ib qho tseem ceeb raw khoom rau kev ua haujlwm ceramics. Nws tuaj yeem siv los npaj cov txheej txheem ceramics, hnav-tiv taus ceramics, thermal conductive ceramics, thiab lwm yam, thiab muaj kev cia siab dav hauv cov khoom siv hluav taws xob, tshuaj lom neeg kev lag luam, tshuab, thiab lwm yam. Nws muaj thermal conductivity zoo heev, nrog thermal conductivity txog li 120 W / m·K, thiab feem ntau yog siv rau hauv thermal conductive heat dissipation cov ntaub ntawv, thermal dissipation cov ntaub ntawv thiab LED.
Tsis tas li ntawd, silicon carbide tau maj mam nkag mus rau hauv lub tshav pob hluav taws xob semiconductors thiab dhau los ua cov khoom siv rau cov khoom siv kub thiab hluav taws xob. Txawm hais tias lub purity ntawm dub silicon carbide yog me ntsis qis dua li ntawm ntsuab silicon carbide, nws kuj yog siv nyob rau hauv ib co nruab nrab thiab tsawg-voltage electronic khoom.
5. Photovoltaic thiab tshiab zog kev lag luam
Dub silicon carbide hmoov yog siv dav hauv kev txiav cov silicon wafers hauv kev lag luam photovoltaic. Raws li abrasive nyob rau hauv cov txheej txheem pob zeb diamond hlau txiav, nws muaj qhov zoo ntawm qhov siab hardness, muaj zogtxiavquab yuam, poob qis, thiab du nto, uas yuav pab txhim kho cov kev ua tau zoo thiab cov txiaj ntsig ntawm silicon wafers thiab txo tus nqi wafer poob thiab cov nqi tsim khoom.
Nrog rau kev txhim kho txuas ntxiv ntawm lub zog tshiab thiab cov khoom siv thev naus laus zis tshiab, silicon carbide kuj tseem raug tsim los rau cov chaw tawm tshiab xws li lithium roj teeb tsis zoo electrode additives thiab ceramic membrane cab kuj.
Ⅳ. Summary thiab Outlook
Dub silicon carbide plays lub luag haujlwm tsis tuaj yeem hloov pauv hauv ntau qhov chaw lag luam nrog nws cov khoom zoo heev, thermal thiab tshuaj lom neeg. Nrog rau kev nce qib ntawm kev tsim technology, cov khoom me me tswj, purity refining thiab txuas ntxiv nthuav dav ntawm daim ntawv thov teb, dub silicon carbide yog tsim los ntawm kev ua haujlwm siab thiab precision.
Nyob rau hauv lub neej yav tom ntej, nrog rau kev loj hlob sai ntawm kev lag luam xws li lub zog tshiab, hluav taws xob ceramics, high-endsib tsoo thiab kev tsim khoom ntse, dub silicon carbide yuav ua lub luag haujlwm tseem ceeb hauv kev lag luam high-end manufacturing thiab dhau los ua ib qho tseem ceeb ntawm cov khoom siv technology siab heev.