Buku Lotsogolera Kusankha Graphite Yophimbidwa ndi TaC

Mu zipangizo zokulirapo zamakristalo otentha kwambiri komanso epitaxy/deposition, graphite crucible imagwira ntchito zitatu nthawi imodzi: malire a kutentha, mawonekedwe a reaction, ndi gwero loipitsidwa. / chotchinga kuipitsidwa. Ichi ndichifukwa chakeZoyikira za graphite zophimbidwa ndi TaCzikuchulukirachulukira—gawo la TaC limapereka mphamvu yotentha kwambiri, kukana dzimbiri mwamphamvu, komanso kuletsa bwino kusamuka kwa zinthu zodetsa, kusunga ubwino wa graphite pamene kuchepetsa zofooka zake.

1) Kodi ndi mavuto ati omwe TaC Coating ingathetse?

A. Kukana Kudzimbiritsa
Potengera kukula kwa SiC ndi njira zina zokhudzana ndi epitaxy mwachitsanzo, mitundu yokhala ndi silicon pa kutentha kwambiri—pamodzi ndi haidrojeni ndi ma halogen chemistry—ingayambitse dzimbiri kosalekeza komanso kuwonongeka kwa magwiridwe antchito a zigawo za graphite. Malipoti amakampani amanenanso kuti m'mlengalenga wolemera silicon, wowononga pamwamba pa 2000°C, zophimba za graphite zimatha kuwonongeka kwambiri patatha nthawi yochepa chabe, pomwe zophimba monga TaC zimatha kusintha kwambiri kulimba.

B. Tinthu Tochepa ndi Kusamuka kwa Mpweya
Tinthu ta graphite kapena kusamuka kwa kaboni tikalowa mu malo olumikizirana kukula kapena malo osungiramo zinthu, zimatha kuwonekera mwachindunji ngati zolakwika, zophatikizika, kuchuluka kwa dislocation, ndipo zingayambitse kuipitsidwa kosasinthika kwa chipinda. Monga chotchinga, cholinga cha TaC ndikupangitsa kukhazikika kwa kutentha ndi kusakhazikika kwa interfacial kukhala kosavuta kulamulira. Kafukufuku wopitilira akuwonetsanso kuti zokutira za TaC zimathandiza kuletsa kutsika kwa graphite/kuwonongeka kwa kapangidwe kake ndikukweza kukhazikika kwa kutentha m'malo okulira makristalo. ②

C. Njira Yokulirapo Yogwirira Ntchito
Anthu ambiri amaona zinthu zophikidwa ngati zophikidwa, koma kwenikweni amachita ngati“jenereta za malire.Pamene pamwamba pa chofufumitsacho pakhalabe chokhazikika, mphamvu ya kutentha ndi mpweya zimakhala zosavuta kubwerezabwereza. Pamene kukhudzana kwa chophimba sikukwanira—zomwe zimapangitsa kuti pakhale ming'alu kapena kulowa kwa malo ena—nthawi zambiri njira yolowerera imayambira pamenepo. Kafukufuku wapadera pa mphamvu ya chofufumitsa-graphite interfacial bonding wakambirana kale ngati chinthu chofunikira chomwe chimakhudza momwe kukula kwa kristalo imodzi kumagwirira ntchito.

2) Kodi ndi kuti komwe kuli koyenera kwambiri?

• Mlengalenga wotentha kwambiri komanso wowononga kwambiri

• Kukula/kutayika kwa zinthu kumakhudzidwa kwambiri ndi tinthu tating'onoting'ono ndi zinyalala zachitsulo

• Mizere yopangira voliyumu yambiri yomwe imafuna moyo wautali komanso kusasinthasintha kolimba

3) Momwe Mungasankhire Chophimba Chophimba cha Graphite Chophimbidwa ndi TaC

Kuphimba kwa TaC si njira imodzi yokha yochitira zinthu “yofanana ndi zonse”. Pogwiritsa ntchito CVD mwachitsanzo, mabuku apereka kukambirana mwadongosolo pa momwe CVD imaonekera komanso momwe TaC/SiC imagwirira ntchito pa zinthu za graphite.

Njira zosiyanasiyana zimabweretsa zotsatira zosiyana:

• Kuchulukana ndi kulola kuti madzi alowe m'malo mwake:Chophimbacho chikakhuthala, chimaletsa bwino dzimbiri lomwe limalowa pang'onopang'ono ndi mpweya/nthunzi.

• Kukhuthala ndi kupsinjika:Pamene makulidwe akuwonjezeka, kupsinjika kwa kutentha ndi chiopsezo cha ming'alu zimawonjezekanso, zomwe zimafuna kuwongolera bwino njira yogwirira ntchito.

• Kukonza ndi kusinthasintha:Kupanga kwakukulu kumadalira kusinthasintha kwa gulu lililonse komanso ngati kukonzanso/kukonzanso kungachitike modalirika.

4） Zofunikira Zowunikira Zolowera

• Maonekedwe ndi momwe pamwamba pake palili:mabowo ang'onoang'ono, mabowo ang'onoang'ono, kapangidwe ka "makoswe/makoswe a nsomba", kusintha mtundu/kumera kwa imvi komwe kumachitika m'deralo

• Kukhuthala ndi kufanana:m'mphepete, ngodya, ndi pansi ndi malo omwe nthawi zambiri amakhala ochepa thupi

• Mphamvu ya bond / kukana kutentha ndi kugwedezeka:njira zoyesera zomveka bwino komanso njira zochotsera/kukana ziyenera kufotokozedwa

• Ming'alu ndi ma porosity:(zolembedwa pamodzi ndi zomwe zili pamwambapa)

• Kuletsa kuipitsidwa:Zonyansa zachitsulo, zotsalira za halogen, ndi kuchuluka kwa ukhondo wa tinthu ting'onoting'ono ziyenera kutsatiridwa