tantalum carbide ndi chiyani

Tantalum carbide (TaC)ndi ultra-high kutentha ceramic chuma ndi kukana kutentha, mkulu kachulukidwe, mkulu compactness; kuyera kwakukulu, zonyansa <5PPM; ndi inertness mankhwala kuti ammonia ndi haidrojeni pa kutentha kwambiri, ndi wabwino matenthedwe bata.

Zomwe zimatchedwa ultra-high heat ceramics (UHTCs) nthawi zambiri zimatanthawuza gulu la zida za ceramic zomwe zimasungunuka kuposa 3000 ℃ ndipo zimagwiritsidwa ntchito kutentha kwambiri ndi malo owononga (monga malo a atomiki a oxygen) pamwamba pa 2000 ℃, monga ZrC, HfC, TaC, HfB2, ZrB2, HfN, etc.

Tantalum carbideali ndi malo osungunuka mpaka 3880 ℃, ali ndi kuuma kwakukulu (Mohs kuuma 9-10), kutsekemera kwakukulu kwamafuta (22W · m-1 · K-1), mphamvu yopindika yayikulu (340-400MPa), ndi mphamvu yaing'ono yowonjezera kutentha (6.6 × 10-6K-1), ndipo amawonetsa kukhazikika kwabwino kwa thermochemical ndi zinthu zabwino kwambiri zakuthupi. Ili ndi kuyanjana kwabwino kwamankhwala komanso kuyanjana kwamakina ndi ma graphite ndi ma C / C composites. Chifukwa chake,Zovala za TaCamagwiritsidwa ntchito kwambiri muzamlengalenga zoteteza matenthedwe, kukula kwa kristalo imodzi, zamagetsi zamagetsi, ndi zida zamankhwala.

Tantalum carbide (TaC)ndi membala wa banja la ceramic yotentha kwambiri!

Pamene ndege zamakono monga magalimoto apamlengalenga, maroketi, ndi zoponya zikuyenda mothamanga kwambiri, kuthamanga kwambiri, komanso kukwera kwambiri, zofunikira pakukana kutentha kwambiri komanso kukana kwa okosijeni kwa zinthu zawo zapamtunda pansi pamikhalidwe yovuta kwambiri zikuchulukirachulukira. Ndege ikalowa mumlengalenga, imakumana ndi malo owopsa monga kutentha kwambiri kwa kutentha, kuthamanga kwambiri, komanso kuthamanga kwa mpweya wothamanga, komanso kutulutsa kwamankhwala komwe kumachitika chifukwa cha oxygen, nthunzi wamadzi, ndi carbon dioxide. Ndegeyo ikatuluka ndi kulowa mumlengalenga, mpweya wozungulira mphuno yake ndi mapiko ake umakanikizidwa kwambiri ndipo umapangitsa kuti pamwamba pa ndegeyo pakhale kugundana kwambiri, zomwe zimapangitsa kuti pamwamba pake pakhale kutentha ndi mpweya. Kuwonjezera pa kutentha kwa aerodynamic panthawi youluka, pamwamba pa ndegeyo idzakhudzidwanso ndi kuwala kwa dzuwa, kutentha kwa chilengedwe, ndi zina zotero panthawi ya ndege, zomwe zimapangitsa kuti kutentha kwa ndege kupitirize kukwera. Kusintha kumeneku kudzakhudza kwambiri ntchito ya ndege.

Tantalum carbide powder ndi membala wa banja la ceramic losagwira kutentha kwambiri. Malo ake osungunuka kwambiri komanso kukhazikika kwamphamvu kwa thermodynamic kumapangitsa TaC kugwiritsidwa ntchito kwambiri kumapeto kotentha kwa ndege, mwachitsanzo, imatha kuteteza zokutira pamwamba pa nozzle ya injini ya rocket.