Silicon carbide ceramic phaj

Hauv ntiaj teb ntawm kev tsim khoom siv precision, muaj ib yam khoom uas txhawb nqa kev txhim kho ntawm ntau lub lag luam siab heev - nws nyuaj dua li hlau, tiv taus cua sov dua li graphite, tab sis ib txwm tswj lub cev sib dua. Qhov no yogsilicon carbide ceramic phaj, ib qho "metamaterial" tseem ceeb hauv kev lag luam niaj hnub no.
1. Cov txiaj ntsim ntawm xwm thiab kev siv lub tswv yim ntawm tib neeg
Silicon carbide (SiC) tsis yog ib yam khoom uas tsis tau xav txog hauv chav kuaj mob. Txij li xyoo 1893, cov kws tshawb fawb tau tshawb pom cov khoom siv ntuj tsim no. Niaj hnub no, los ntawm kev siv cov thev naus laus zis kub siab los sib xyaw cov xuab zeb silicon thiab cov pa roj carbon ntawm qhov kub siab, cov khoom siv silicon carbide ceramics qib kev lag luam nrog kev ua tau zoo dua tau tsim. Cov khoom siv no sib xyaw ua ke qhov ruaj khov ntawm ceramics nrog cov yam ntxwv ntawm semiconductors, tsim cov khoom siv tshwj xeeb.
2, Decrypt tsib qhov zoo tseem ceeb
1. Tus neeg saib xyuas kub siab
Nyob rau hauv qhov kub siab tshaj plaws ntawm 1350 ℃, cov hlau ib txwm twb tau mos thiab deformed, thaum silicon carbide ceramic phaj tseem tuaj yeem tswj tau qhov ruaj khov ntawm cov qauv. Qhov kev tiv thaiv kub siab no ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov teb xws li cov khoom siv yaj thiab cov cav aerospace.
2. Lub ntaub thaiv tiv thaiv muaj zog heev
Qhov tawv, thib ob tsuas yog pob zeb diamond, tso cai rau cov phaj silicon carbide kom yooj yim tiv taus kev yaig thiab kev cuam tshuam ntawm cov hlau yaj. Ntawm kab casting txhuas, nws lub neej ntev dua 5 npaug piv rau cov khoom siv refractory ib txwm muaj.
3. Muaj peev xwm ua kom sov tau zoo
Tsis zoo li cov khoom siv ceramics ib txwm muaj, silicon carbide ceramics muaj cov thermal conductivity zoo heev. Cov khoom siv "ua pa tau" no tuaj yeem hloov pauv cua sov sai sai thaum tswj nws qhov ruaj khov, ua rau nws muaj txiaj ntsig zoo hauv kev faib cov cua sov semiconductor.

4. Tus Pioneer Sib Tw
Txawm tias muaj zog npaum li cas los xij, nws qhov hnyav tsuas yog ib feem peb ntawm cov hlau xwb. Tus cwj pwm no ntawm "kev nqa cov khoom hnyav maj mam" coj cov kev daws teeb meem txo qhov hnyav rau cov teb xws li cov khoom siv hluav taws xob tshiab thiab kev thauj mus los ntawm tsheb ciav hlau.
5. Tus Neeg Tiv Thaiv Tshuaj Lom
Txawm hais tias muaj cov khoom siv uas muaj zog heev los xij, cov khoom siv silicon carbide ceramics muaj kev ruaj khov zoo kawg nkaus. Hauv cov tshuaj reactor, nws zoo li tus neeg saib xyuas uas yeej tsis xeb, ua kom muaj kev nyab xeeb ntawm kev tsim khoom.
3, Muaj ntau txoj hauv kev los hloov yav tom ntej
Txij li cov khoom siv uas muaj zog ntawm cov photovoltaic cells mus rau cov khoom siv uas tsis yooj yim hnav ntawm cov tshuab precision, txij li lub hauv paus cua sov ntawm cov chips semiconductor mus rau lub module lim dej ntawm cov khoom siv tiv thaiv ib puag ncig, cov phaj silicon carbide ceramic tau txhais dua cov ciam teb kev ua tau zoo ntawm cov ntaub ntawv kev lag luam. Hauv cov teb tseem ceeb xws li lub zog tshiab, cov ntaub ntawv hluav taws xob, thiab cov khoom siv siab, cov ntaub ntawv silicon carbide ceramic maj mam tsav tsheb kev txhim kho kev lag luam.
Ua ib tug kws tsim kho tshiab hauv kev siv tshuab uas koom nrog tob hauv kev tsim cov khoom siv ceramic tshwj xeeb, peb ib txwm cog lus tias yuav thawb kev ua tau zoo ntawm cov ntaub ntawv silicon carbide mus rau qhov kawg. Los ntawm kev txhim kho cov txheej txheem sintering thiab cov txheej txheem kho qhov chaw, txhua lub rooj tsavxwm ceramic ua ib daim duab kos duab hauv kev lag luam uas tuaj yeem tiv taus qhov kev sim ntawm lub sijhawm. Yav tom ntej yog nyob ntawm no, cia peb ua tim khawv ua ke txog kev zoo nkauj tshwj xeeb ntawm silicon carbide ceramics tawg paj hauv ntau thaj chaw.
Shandong Zhongpeng yeej ib txwm ua raws li lub tswv yim ntawm "kev tsim kho tshiab ntawm cov khoom siv tsav kev vam meej hauv kev lag luam", thiab tos ntsoov yuav ua haujlwm nrog cov neeg koom tes thoob ntiaj teb los tshawb nrhiav cov kev siv tsis kawg ntawm silicon carbide ceramics.