Kev taw qhia khoom thiab daim ntawv thov ntawm cov roj silicon dub
Cov roj silicon dub(luv ua dub silicon carbide) yog cov khoom siv tsis yog hlau ua los ntawm quartz xuab zeb thiab roj av coke ua cov khoom siv tseem ceeb thiab smelted ntawm qhov kub siab hauv lub cub tawg tiv taus. Nws muaj xim dub-grey lossis tsaus dub, qhov nyuaj heev, thermal conductivity zoo thiab tshuaj lom neeg ruaj khov. 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 teb.
Ⅰ. Cov yam ntxwv ua tau zoo ntawm cov roj silicon dub
Lub zog ntawm Mohsdub silicon carbideNws muaj zog txog li 9.2, thib ob tsuas yog pob zeb diamond thiab cubic boron nitride, thiab nws muaj zog heev rau kev hnav thiab kev cuam tshuam. Nws lub ntsiab lus yaj yog li 2700 ° C, thiab nws tuaj yeem tswj tau qhov ruaj khov ntawm cov qauv hauv qhov kub thiab txias thiab tsis yooj yim rau decompose lossis deform. Tsis tas li ntawd, nws muaj kev ua tau zoo ntawm thermal conductivity thiab cov coefficient thermal expansion qis, thiab tseem qhia tau tias muaj kev ruaj khov zoo heev hauv qab qhov kub thiab txias siab.
Hais txog cov khoom siv tshuaj lom neeg, cov silicon carbide dub muaj kev tiv thaiv corrosion zoo rau cov kua qaub thiab alkalis, thiab tshwj xeeb tshaj yog tsim rau kev siv hauv kev lag luam hauv qhov chaw nyuaj. Nws cov conductivity siab kuj ua rau nws yog lwm yam khoom siv rau qee cov khoom siv cua sov hluav taws xob thiab cov teb semiconductor.
Ⅱ. Cov qauv khoom tseem ceeb thiab cov lus qhia tshwj xeeb
Cov silicon carbide dub tuaj yeem ua rau ntau yam duab raws li qhov loj me thiab kev siv ntawm cov khoom sib txawv:
Cov khoom siv thaiv: cov siv lead ua loj tom qab smelting, feem ntau siv rau kev rov ua dua lossis ua cov khoom siv hlau ntxiv;
Cov xuab zeb granular (F xuab zeb/P xuab zeb): siv los ua cov log sib tsoo, xuab zeb abrasives, xuab zeb ntawv, thiab lwm yam.;
Hmoov me me (W, D series): siv rau kev sib tsoo ultra-precision, polishing, ceramic sintering, thiab lwm yam.;
Nano-theem micro hmoov: siv rau cov khoom siv hluav taws xob zoo tshaj plaws, cov ntaub ntawv thermal conductive composite, thiab lwm yam.
Qhov loj ntawm cov khoom me me yog txij li F16 txog F1200, thiab qhov loj ntawm cov hmoov me me tuaj yeem ncav cuag qib nanometer, uas tuaj yeem hloov kho raws li qhov xav tau ntawm cov teb thov sib txawv.
Ⅲ. Cov chaw siv tseem ceeb ntawm cov roj silicon dub
1. Cov cuab yeej abrasives thiab cov cuab yeej sib tsoo
Cov khoom siv abrasive yog cov khoom siv ib txwm muaj thiab siv dav tshaj plaws ntawm cov silicon carbide dub. Siv nws qhov kev ua kom tawv thiab nws tus kheej ua kom ntse, cov silicon carbide dub tuaj yeem siv los tsim ntau yam khoom siv abrasive, xws li cov log sib tsoo, cov disc txiav, ntawv xuab zeb, cov taub hau sib tsoo, cov khoom sib tsoo nplaum, thiab lwm yam, uas tsim nyog rau kev sib tsoo thiab ua cov ntaub ntawv xws li hlau cam khwb cia, hlau, cov hlau tsis yog ferrous, ceramics, iav, quartz, thiab cov khoom cement.
Nws qhov zoo yog kev sib tsoo ceev ceev, tsis yooj yim rau txhaws, thiab ua haujlwm tau zoo. Nws yog siv dav hauv kev ua hlau, kev tsim tshuab, kho kom zoo nkauj thiab lwm yam lag luam.
2. Cov ntaub ntawv refractory
Vim nws qhov kub thiab txias ruaj khov thiab tiv taus corrosion, dub silicon carbide yog dav siv hauv kev lag luam ntawm cov khoom siv refractory kub. Nws tuaj yeem ua rau silicon carbide cib, lub qhov cub hluav taws xob, crucibles, thermocouple tiv thaiv raj, cov cuab yeej kiln, nozzles, tuyere cib, thiab lwm yam, thiab dav siv hauv kev lag luam kub xws li metallurgy, non-ferrous hlau, hluav taws xob, iav, cement, thiab lwm yam, kom ntev lub neej ntawm cov khoom siv thiab txhim kho kev nyab xeeb ntawm kev ua haujlwm.
Tsis tas li ntawd xwb, cov ntaub ntawv silicon carbide muaj cov khoom tiv thaiv kab mob zoo hauv cov huab cua oxidizing kub thiab tsim nyog rau kev siv rau hauv cov khoom tseem ceeb ntawm cov cua sov kub, cov cua sov tawg thiab lwm yam khoom siv.
3. Kev lag luam hlau
Hauv cov txheej txheem hlau xws li kev ua hlau thiab kev casting, cov silicon carbide dub tuaj yeem siv ua tus deoxidizer, tus neeg sawv cev sov thiab recarburizer. Vim nws cov ntsiab lus carbon siab thiab tso tawm cua sov sai, nws tuaj yeem txhim kho kev ua haujlwm smelting thiab txhim kho qhov zoo ntawm cov hlau molten. Tib lub sijhawm, nws kuj tseem tuaj yeem txo cov ntsiab lus tsis huv hauv cov txheej txheem smelting thiab ua lub luag haujlwm hauv kev ntxuav cov hlau molten.
Qee lub Hoobkas hlau kuj ntxiv qee qhov feem pua ntawm silicon carbide los kho cov khoom sib xyaw hauv kev smelting ntawm cov hlau cam khwb cia thiab cov hlau ductile kom txuag tau cov nqi thiab txhim kho kev ua tau zoo ntawm cov castings.
4. Cov khoom siv ua los ntawm av nplaum thiab cov khoom siv hluav taws xob
Cov silicon carbide dub kuj yog ib qho khoom siv tseem ceeb rau cov khoom siv ua los ntawm cov khoom siv ceramic. Nws tuaj yeem siv los npaj cov khoom siv ceramic, cov khoom siv ceramic uas tsis yooj yim hnav, cov khoom siv ceramic thermal conductive, thiab lwm yam, thiab muaj kev cia siab dav hauv cov teb ntawm cov khoom siv hluav taws xob, kev lag luam tshuaj lom neeg, tshuab, thiab lwm yam. Nws muaj cov thermal conductivity zoo heev, nrog rau cov thermal conductivity txog li 120 W / m·K, thiab feem ntau siv rau hauv cov khoom siv thermal conductive heat dissipation, cov khoom siv thermal interface thiab cov khoom siv LED heat dissipation.
Tsis tas li ntawd xwb, silicon carbide tau maj mam nkag mus rau hauv thaj chaw ntawm cov khoom siv hluav taws xob semiconductor thiab dhau los ua cov khoom siv tseem ceeb rau cov khoom siv kub thiab siab. Txawm hais tias qhov purity ntawm dub silicon carbide qis dua me ntsis ntawm ntsuab silicon carbide, nws kuj siv rau hauv qee cov khoom siv hluav taws xob nruab nrab thiab qis voltage.
5. Kev lag luam photovoltaic thiab lub zog tshiab
Cov hmoov silicon carbide dub yog siv dav hauv kev txiav cov silicon wafers hauv kev lag luam photovoltaic. Ua ib qho abrasive hauv cov txheej txheem txiav hlau pob zeb diamond, nws muaj qhov zoo ntawm kev siab hardness, muaj zogtxiavlub zog, kev poob qis, thiab qhov chaw txiav du, uas pab txhim kho kev txiav zoo thiab cov txiaj ntsig ntawm silicon wafers thiab txo qhov poob wafer thiab cov nqi tsim khoom.
Nrog rau kev txhim kho tas mus li ntawm lub zog tshiab thiab cov khoom siv tshiab, silicon carbide kuj tseem tab tom tsim rau cov teb tshiab xws li lithium battery negative electrode additives thiab ceramic membrane carriers.
Ⅳ. Kev Txheeb Xyuas thiab Kev Cia Siab
Cov silicon carbide dub ua lub luag haujlwm tseem ceeb hauv ntau qhov chaw lag luam vim nws cov khoom siv kho tshuab, cua sov thiab tshuaj lom neeg zoo heev. Nrog rau kev txhim kho tas mus li ntawm cov thev naus laus zis tsim khoom, kev tswj qhov loj me ntawm cov khoom, kev ua kom huv si thiab kev nthuav dav ntawm cov teb thov, cov silicon carbide dub tab tom txhim kho mus rau kev ua haujlwm siab thiab kev raug.
Yav tom ntej, nrog rau kev nce siab sai ntawm cov lag luam xws li lub zog tshiab, cov khoom siv hluav taws xob, cov khoom siv siab kawgkev sib tsoo thiab kev tsim khoom ntse, cov silicon carbide dub yuav ua lub luag haujlwm tseem ceeb hauv kev tsim khoom siab thiab dhau los ua lub hauv paus tseem ceeb ntawm cov khoom siv thev naus laus zis siab heev.