Thaum nws lub npe suab yog xim hlau, silicon carbide (SiC) tau muab faib ua cov txheej txheem ceramic. Nws yog nyob rau hauv ib pawg sib txawv, feem ntau hu ua "engineering ceramics" lossis "technical ceramics"-cov khoom siv tshwj xeeb tsim los ua haujlwm hauv thaj chaw uas cov hlau thiab oxides ua tsis tau.
Vim li cas Silicon Carbide tsis yog Hlau
Tsis zoo li cov hlau, uas yog cov yam ntxwv ntawm ductility thiab "hiav txwv tsis muaj electrons," silicon carbide yog covalent compound. Nws tsis deform nyob rau hauv siab (nws yog nkig heev) thiab tsis muaj cov luster yam ntxwv ntawm hlau. Thaum siab -purity silicon carbide tuaj yeem ua raws li lub rwb thaiv tsev, nws qhov txiaj ntsig tiag tiag yog nyob rau hauv nws lub peev xwm "doped" mus rau qhov dav -bandgap semiconductor, ua rau nws yog cov khoom tseem ceeb rau tom ntej - tiam electronics.
Qhov txawv ntawm "Advanced Ceramics"
Hauv kev lag luam, peb paub qhov txawv ntawm silicon carbide los ntawm cov tsoos ceramics (xws li porcelain lossis ceramic vuas) vim nws tsis yog -oxide ceramics. Zoo li silicon nitride (Si₃N₄) thiab txhuas nitride (AlN), silicon carbide (SiC) muaj cov khoom nram qab no:
Tsis tshua muaj siab hardness: Nws Mohs hardness ze ntawm pob zeb diamond.
Tsis tshua muaj siab thermal stability: Nws tuav nws txoj kev ncaj ncees ntawm qhov kub siab tshaj 2700 degree.
High thermal conductivity: Tsis zoo li feem ntau cov ceramics, silicon carbide tuaj yeem hloov cov cua sov kom zoo.
Kev tsim khoom nyuaj: Cov khoom no heev - hardness heev thiab brittleness - ua silicon carbide nyuaj heev rau kev ua. Ib txwm machining feem ntau ua rau tsim cov microcracks. Yog li ntawd, Yuchang Laser cov txheej txheem kev sib xyaw ua ke yog qhov tseem ceeb; lawv muab cov precision xav tau rau kev txiav, drilling, thiab scribing yam tsis muaj kev cuam tshuam cov khoom ntawm cov qauv kev ncaj ncees.
Core Industrial Applications ntawm Silicon Carbide
1. Ntsiab rau Cov Tsheb Hluav Taws Xob Niaj Hnub thiab Lub Zog Ntsuab
Silicon carbide yog "qhov zais cia" rau kev ua haujlwm zoo ntawm cov tsheb hluav taws xob niaj hnub (EVs).
• Kev hloov hluav taws xob: SiC MOSFETs thiab diodes tab tom hloov silicon- cov khoom siv hauv inverters thiab ntawm - lub tsheb chargers (OBCs).
• Kev cuam tshuam: Cov neeg tsim khoom xws li Tesla, BYD, thiab NIO tab tom siv SiC los txhawb 800V siab-voltage platforms, txo hwj chim hluav taws xob loj los ntawm 30% thaum nce tsheb ntau li ntawm 5-10%.
2. 5G Infrastructure thiab RF Systems
Lub tshav kub tsim los ntawm 5G hauv paus chaw nres tsheb yog qhov nyuaj heev. Cov tuam txhab xws li Huawei thiab Ericsson tab tom siv GaN- ntawm-SiC (Gallium Nitride ntawm Silicon Carbide) thev naus laus zis, siv SiC lub thermal conductivity (~330 W/m·K) kom dissipate cua sov los ntawm siab - lub zog RF khoom, kom ruaj ntseg satellite thiab radars kev sib txuas lus.
3. Industrial Efficiency thiab Data Centers
Nyob rau hauv photovoltaic inverters thiab muaj lub cev muaj zog tsav, SiC txo qhov kev poob qis. Rau cov chaw zov me nyuam, qhov no txhais tau tias muaj zog dua qhov ceev thiab txo cov nqi cua txias ntau heev -kev ua tau zoo ntawm cov kab ke tuaj yeem yooj yim tshaj 98%.
4. High-Abrasion-Resistant Precision Machinery
Silicon carbide (SiC) ua tau zoo nyob rau hauv ib puag ncig uas kev sib txhuam tuaj yeem ua rau cov qauv ua kom puas. Sealing rings, bearings, thiab blasting nozzles ua los ntawm SiC feem ntau muaj lub neej ntev 3 txog 5 npaug ntev dua li cov cemented carbide. Hauv kev tsim khoom semiconductor, SiC yog cov khoom siv xaiv rau wafer thauj caj npab vim nws txoj kev huv thiab kev puas tsuaj.
5. Semiconductor substrates thiab wafer ua
Silicon carbide yog ntau tshaj li ib feem; nws yog qhov tseem ceeb.
Crystal Substrates: Nws yog lub hauv paus rau kev ua haujlwm siab - nti epitaxial kev loj hlob.
Electrostatic Chucks (ESC): Hauv plasma etching thiab deposition, cov khoom siv hluav taws xob tunable ntawm SiC ua rau nws zoo tagnrho rau kev tuav cov wafers thaum tiv taus huab cua kub.
Koj puas xav ua cov txheej txheem ceramics?
Txawm hais tias koj tab tom ua silicon carbide, alumina, lossis zirconium oxide, qhov tseeb yog qhov tseem ceeb. Wuhan Yuchang Laser tshwj xeeb hauv kev muab cov cuab yeej laser uas xav tau los ua cov txheej txheem siab no - cov ntaub ntawv hardness, ua tiav xoom-kev sib cuag, siab - ua tiav.
Ua raws li peb kom paub ntau ntxiv txog yav tom ntej txoj kev loj hlob tiam sis ntawm precision laser ua.
