Tantalum carbide (TaC)ndipamwamba kwambiri kutentha kugonjetsedwa ndi ceramic material ndi ubwino wa malo osungunuka kwambiri, kuuma kwakukulu, kukhazikika kwa mankhwala, mphamvu zamagetsi ndi matenthedwe matenthedwe, etc.Kupaka kwa TaCItha kugwiritsidwa ntchito ngati zokutira zosagwira ablation, zokutira zosagwira makutidwe ndi okosijeni, komanso zokutira zosagwira, ndipo zimagwiritsidwa ntchito kwambiri poteteza matenthedwe amlengalenga, kukula kwa m'badwo wachitatu wa semiconductor single crystal kukula, zamagetsi zamagetsi ndi zina.
Njira:
Tantalum carbide (TaC)ndi mtundu wa zinthu za ceramic zomwe zimakhala ndi kutentha kwapamwamba kwambiri zomwe zimakhala ndi ubwino wa malo osungunuka kwambiri, kuuma kwakukulu, kukhazikika kwa mankhwala, mphamvu zamagetsi ndi matenthedwe matenthedwe. Chifukwa chake,Kupaka kwa TaCItha kugwiritsidwa ntchito ngati zokutira zosagwira ablation, zokutira zosagwira makutidwe ndi okosijeni, komanso zokutira zosagwira, ndipo zimagwiritsidwa ntchito kwambiri poteteza matenthedwe amlengalenga, kukula kwa m'badwo wachitatu wa semiconductor single crystal kukula, zamagetsi zamagetsi ndi zina.
Mawonekedwe amkati a zokutira:
Timagwiritsa ntchito njira ya slurry-sintering pokonzekeraZovala za TaCza makulidwe osiyanasiyana pamagawo a graphite amitundu yosiyanasiyana. Choyamba, ufa wapamwamba wokhala ndi Ta source ndi C gwero umakonzedwa ndi dispersant ndi binder kuti apange yunifolomu ndi yokhazikika precursor slurry. Pa nthawi yomweyo, malinga ndi kukula kwa graphite mbali ndi makulidwe amafunaKupaka kwa TaC, kuphimba kusanachitike kumakonzedwa ndi kupopera mbewu mankhwalawa, kuthira, kulowa mkati ndi mitundu ina. Pomaliza, imatenthedwa mpaka 2200 ℃ m'malo opanda vacuum kuti ikonzekere yunifolomu, wandiweyani, gawo limodzi, komanso crystalline bwino.Kupaka kwa TaC.
Mawonekedwe amkati a zokutira:
Kunenepa kwaKupaka kwa TaCndi pafupifupi 10-50 μm, mbewu zimakula momasuka, ndipo zimapangidwa ndi TaC yokhala ndi gawo limodzi lokhala ndi mawonekedwe a cubic, popanda zonyansa zina; zokutira ndi wandiweyani, kapangidwe wathunthu, ndi crystallinity ndi mkulu.Kupaka kwa TaCimatha kudzaza pores pamwamba pa graphite, ndipo imamangirizidwa ku matrix a graphite ndi mphamvu yolumikizana kwambiri. Chiyerekezo cha Ta mpaka C mu zokutira ndi pafupi 1: 1. GDMS chiyero chodziwikiratu muyezo ASTM F1593, ndende yonyansa ndi yochepera 121ppm. Masamu amatanthawuza kupatuka (Ra) kwa mbiri yakuphimba ndi 662nm.
Ntchito Zamba:
GaN ndiSiC epitaxialZida za CVD reactor, kuphatikiza zonyamulira zowotcha, mbale za satana, mitu ya shawa, zovundikira zapamwamba ndi zotengera.
SiC, GaN ndi AlN crystal kukula zigawo, kuphatikizapo crucibles, mbewu crystal holder, zowongolera oyenda ndi zosefera.
Zida zamafakitale, kuphatikiza zinthu zotenthetsera zopinga, ma nozzles, mphete zotchinjiriza ndi zomangira brazing.
Zofunikira zazikulu:
Kukhazikika kwakukulu kwa kutentha kwa 2600 ℃
Amapereka chitetezo chokhazikika m'malo ovuta a mankhwala a H2, NH3, SiH4ndi Si vapor
Zoyenera kupanga misa ndi zozungulira zazifupi.
