Marka silikoon carbide crystal koraan, "deegaanka" ee interface koritaanka u dhexeeya xarunta axial of crystal iyo cidhif waa ka duwan yahay, si stress crystal cidhifka kordho, iyo cidhifka crystal waa ay fududahay in la soo saaro "ciladaad dhamaystiran" ay sabab u tahay saamaynta graphite stop giraanta "carbon", sida loo xaliyo dhibaatada cidhifka ama loo kordhiyo aagga wax ku ool ah ee xarunta (in ka badan 95%) waa mawduuc muhiim ah.
Sida cilladaha macro sida "microtubules" iyo "inclusions" ayaa si tartiib tartiib ah u xakameynaya warshadaha, caqabada silikoon carbide crystals si ay "si degdeg ah u koraan, dheer iyo qaro weyn, oo u koraan", cidhifka "ciladaha dhamaystiran" ayaa si aan caadi ahayn caan u ah, iyo kororka dhexroorka iyo dhumucda silikoon carbide crystals, cidhifyada "cilad-wareeg ah" dhexroorka iyo dhumucdiisuna waxay noqon doontaa mid isku dhafan.
Isticmaalka tantalum carbide TaC daahan waa in la xalliyo dhibaatada cirifka iyo hagaajinta tayada kobaca crystal, taas oo ah mid ka mid ah jihooyinka farsamada asaasiga ah ee "si dhakhso ah u koraya, koraya dhumucda iyo koraya". Si kor loogu qaado horumarinta tignoolajiyada warshadaha iyo xallinta ku-tiirsanaanta "soo dejinta" ee alaabta muhiimka ah, Hengpu waxay horumarisay tignoolajiyada daahan tantalum carbide (CVD) waxayna gaartay heer caalami ah.
Tantalum carbide TaC daahan, marka laga eego aragtida xaqiiqadu maaha mid adag, oo leh sintering, CVD iyo hababka kale waa sahlan tahay in la gaaro. Habka Sintering, isticmaalka tantalum carbide budada ama horudhac, ku darida maaddooyinka firfircoon (guud ahaan biraha) iyo wakiilka isku xidhka (guud ahaan silsiladda polymer dheer), dahaarka on dusha sare ee substrate garaafyada sintered heerkul sare. Habka CVD, TaCl5+H2+CH4 waxaa lagu shubay oogada garaafyada cabbirka 900-1500℃.
Si kastaba ha ahaatee, xuduudaha aasaasiga ah sida hanuuninta crystal of tantalum carbide dhigaalka, dhumucdiisuna filimka lebis, sii daayo stress u dhexeeya daahan iyo matrix graphite, dildilaaca dusha, iwm, waa mid aad u adag. Gaar ahaan jawiga koritaanka sic crystal, nolol adeeg xasiloon ayaa ah halbeegga udub dhexaadka ah, waa tan ugu adag.
Waqtiga boostada: Jul-21-2023