SiC coating ke eng?

Liaparo tsa Silicon Carbide (SiC).li bohlokoa ka potlako lits'ebetsong tse fapaneng tsa ts'ebetso e phahameng ka lebaka la litšobotsi tsa tsona tse makatsang tsa 'mele le lik'hemik'hale. E sebelisoa ka mekhoa e kang Physical kapa Chemical Vapor Deposition (CVD), kapa mekhoa ea ho fafatsa,Liaparo tsa SiCfetola thepa ea bokaholimo ba likarolo, e fana ka botsitso bo matlafalitsoeng le ho hanyetsa maemo a feteletseng.

Ke hobane'ng ha SiC Coatings?
SiC e tsebahala ka boemo ba eona bo phahameng ba ho qhibiliha, ho thatafala ho ikhethang, le ho hanyetsa ho hoholo ha kutu le oxidation. Litšobotsi tsena li etsaLiaparo tsa SiCe atlehang ka ho khetheha ho mamella maemo a boima a kopaneng le liindasteri tsa sefofane le ts'ireletso. Haholo-holo, khanyetso e ntle ea SiC ea ablation mocheso pakeng tsa 1800-2000 ° C e etsa hore e be khetho e nepahetseng bakeng sa lits'ebetso tse hlokang bophelo bo bolelele le ho ts'epahala tlas'a mocheso o matla le khatello ea maikutlo.
Mekhoa e Tloaelehileng bakeng saSiC CoatingKopo:
1.Chemical Vapor Deposition (CVD):
CVD ke mokhoa o atileng moo motsoako o lokelang ho koaheloa o beoa ka har'a tube ea reaction. Ho sebelisa Methyltrichlorosilane (MTS) e le selelekela, SiC e kenngoa holim'a karolo ea motsoako ka mocheso ho tloha ho 950-1300 ° C tlas'a maemo a tlaase a khatello. Ts'ebetso ena e tiisa seaparo,ho roala SiC ea boleng bo holimo, ho matlafatsa matla a karolo le nako ea bophelo.

2.Precursor Impregnation le Pyrolysis (PIP):
Mokhoa ona o kenyelletsa kalafo ea pele ea karolo e lateloang ke vacuum impregnation ka tharollo ea selelekela sa ceramic. Ka mor'a ho kenngoa, karolo e kena pyrolysis ka sebōping, moo e pholileng ho mocheso oa kamore. Sephetho ke seaparo se matla sa SiC se fanang ka tšireletso e ikhethang khahlanong le ho roala le khoholeho.

Lisebelisoa le Melemo:
Tšebeliso ea liphahlo tsa SiC e eketsa bophelo ba likarolo tsa bohlokoa le ho fokotsa litšenyehelo tsa tlhokomelo ka ho fana ka lera le thata, le sireletsang le sireletsang khahlanong le ho senyeha ha tikoloho. Ka mohlala, sebakeng sa lifofane, liaparo tsena li bohlokoa haholo ho sireletsa khahlanong le ho tsosoa ha mocheso le ho apara ha mechine. Ka thepa ea sesole, liphahlo tsa SiC li ntlafatsa ho tšepahala le ts'ebetso ea likarolo tsa bohlokoa, ho netefatsa botšepehi ba ts'ebetso esita le tlas'a maemo a thata ka ho fetisisa.
Qetello:
Ha liindasteri li ntse li tsoela pele ho sutumelletsa meeli ea ts'ebetso le ho tšoarella, liphahlo tsa SiC li tla bapala karolo ea bohlokoa ho nts'etsopele ea mahlale a thepa le boenjiniere. Ka lipatlisiso tse tsoelang pele le nts'etsopele, liphahlo tsa SiC ha ho pelaelo hore li tla atolosa phihlello ea tsona, li behe litekanyetso tse ncha ka liaparo tse phahameng tsa ts'ebetso.