Zamakono C, N, B ndi zina zopanda oxide high-tech refractory raw structures, strained sintered silicon carbide ndi yayikulu, yotsika mtengo, inganenedwe kuti ndi emery kapena refractory sand. Silicon carbide yoyera ndi kristalo yopanda utoto. Ndiye kapangidwe kake ndi makhalidwe a silicon carbide ndi chiyani?
Silikoni carbide yosungunuka pansi pa kuthamanga kwa mpweya
Kapangidwe ka zinthu za silika carbide yosungunuka mumlengalenga:
Kalabu ya silicon yophwanyidwa ndi mphamvu ya mlengalenga yomwe imagwiritsidwa ntchito m'mafakitale ndi yachikasu chopepuka, chobiriwira, chabuluu ndi chakuda kutengera mtundu ndi kuchuluka kwa zonyansa, ndipo kuyera kwake ndi kosiyana ndipo kuwonekera kwake ndi kosiyana. Kapangidwe ka kristalo ya silicon carbide kamagawidwa m'magulu a plutonium okhala ndi mawu asanu ndi limodzi kapena diamondi ndi cubic plutonium-sic. Plutonium-sic imapanga kusintha kosiyanasiyana chifukwa cha dongosolo losiyana la maatomu a kaboni ndi silicon mu kapangidwe ka kristalo, ndipo mitundu yoposa 70 ya kusintha kwapezeka. beta-SIC imasandulika kukhala alpha-SIC pamwamba pa 2100. Njira yamafakitale ya silicon carbide imayengedwa ndi mchenga wa quartz wapamwamba kwambiri ndi coke ya petroleum mu uvuni wokana. Mabuloko a silicon carbide oyengedwa amaphwanyidwa, kuyeretsa acid-base, kulekanitsa maginito, kuwunikira kapena kusankha madzi kuti apange zinthu zosiyanasiyana za kukula kwa tinthu.
Makhalidwe a zinthu za silicon carbide yosungunuka mumlengalenga:
Silicon carbide ili ndi kukhazikika kwabwino kwa mankhwala, kutentha kosinthasintha, kutentha kokwanira, kukana kuvala, kotero kuwonjezera pa kugwiritsidwa ntchito movutikira, pali ntchito zambiri: Mwachitsanzo, ufa wa silicon carbide umakutidwa pakhoma lamkati la turbine impeller kapena silinda block ndi njira yapadera, yomwe ingathandize kukana kuvala ndikuwonjezera moyo wa nthawi 1 mpaka 2. Yopangidwa ndi zinthu zosatentha, zazing'ono, zolemera pang'ono, mphamvu yayikulu ya zinthu zotsutsa kutentha, kugwiritsa ntchito mphamvu moyenera ndikwabwino kwambiri. Silicon carbide yotsika (kuphatikiza pafupifupi 85% SiC) ndi deoxidizer yabwino kwambiri yowonjezerera liwiro lopanga zitsulo komanso kuwongolera mosavuta kapangidwe ka mankhwala kuti awonjezere ubwino wa chitsulo. Kuphatikiza apo, silicon carbide yoponderezedwa ndi mpweya imagwiritsidwanso ntchito kwambiri popanga zigawo zamagetsi za ndodo za kaboni ya silicon.
Silicon carbide ndi yolimba kwambiri. Kulimba kwa Morse ndi 9.5, yachiwiri kuposa diamondi yolimba padziko lonse lapansi (10), ndi semiconductor yokhala ndi kutentha kwabwino kwambiri, imatha kukana okosijeni kutentha kwambiri. Silicon carbide ili ndi mitundu yosachepera 70 ya makristalo. Plutonium-silicon carbide ndi isomer yodziwika bwino yomwe imapangidwa kutentha kopitilira 2000 ndipo ili ndi kapangidwe ka kristalo ka hexagonal (kofanana ndi wurtzite). Sintered silicon carbide pansi pa kupsinjika kwa mlengalenga.
Kugwiritsa ntchito silicon carbide mumakampani opanga ma semiconductor
Unyolo wa makampani opanga ma semiconductor a silicon carbide umaphatikizapo ufa wa silicon carbide woyeretsedwa kwambiri, gawo la kristalo limodzi, pepala la epitaxial, zida zamagetsi, ma module packaging ndi ntchito zomaliza.
1. Gawo la kristalo limodzi Gawo la kristalo limodzi ndi chinthu chothandizira cha semiconductor, zinthu zoyendetsera mpweya komanso gawo la kukula kwa epitaxial. Pakadali pano, njira zokulira za kristalo limodzi la SiC zimaphatikizapo njira yosinthira nthunzi ya thupi (njira ya PVT), njira ya gawo lamadzimadzi (njira ya LPE), ndi njira yoyika nthunzi ya mankhwala otentha kwambiri (njira ya HTCVD). Sintered silicon carbide pansi pa kupsinjika kwa mpweya
2. Chipepala cha Epitaxial Chipepala cha epitaxial cha Silicon carbide, chipepala cha silicon carbide, filimu imodzi ya kristalo (gawo la epitaxial) yokhala ndi mbali yomweyo ndi kristalo ya substrate yomwe ili ndi zofunikira zina za substrate ya silicon carbide. Mu ntchito zenizeni, zipangizo za semiconductor za wide band gap pafupifupi zonse zimapangidwa mu gawo la epitaxial, ndipo silicon chip yokha imagwiritsidwa ntchito ngati gawo lokha, kuphatikiza gawo la gawo la GaN epitaxial.
3. Ufa wa silicon carbide woyeretsedwa kwambiri Ufa wa silicon carbide woyeretsedwa kwambiri ndi chinthu chopangira kukula kwa silicon carbide single crystal pogwiritsa ntchito njira ya PVT, ndipo kuyera kwa chinthucho kumakhudza mwachindunji kukula ndi mawonekedwe amagetsi a silicon carbide single crystal.
4. Chipangizo chamagetsi ndi mphamvu ya band yopangidwa ndi zinthu za silicon carbide, zomwe zimakhala ndi kutentha kwambiri, ma frequency ambiri komanso magwiridwe antchito apamwamba. Malinga ndi momwe chipangizochi chimagwirira ntchito, chipangizo chamagetsi cha SiC chimaphatikizapo diode yamagetsi ndi chubu chosinthira magetsi.
5. Malo Osungira Zinthu Mu ntchito za semiconductor za m'badwo wachitatu, ma semiconductor a silicon carbide ali ndi ubwino wowonjezera ma semiconductor a gallium nitride. Chifukwa cha mphamvu yosinthira zinthu, kutentha kochepa, kupepuka ndi zabwino zina za zipangizo za SiC, kufunikira kwa makampani otsika mtengo kukupitirirabe, ndipo pali chizolowezi chosintha zida za SiO2.
Nthawi yotumizira: Juni-16-2023