Emakethe, sijwayelene kakhulu nezinto ezikhethekile zobumba: i-silicon carbide, i-alumina, i-zirconia, i-silicon nitride. Isidingo semakethe esiphelele, hlaziya inzuzo yalezi zinhlobo eziningana zezinto.
I-silicon carbide inezinzuzo zentengo eshibhile, ukumelana okuhle nokuguguleka, amandla aphezulu, inkinga enkulu ukuthi kulula ukuyixuba, kunzima ukuyixuba. I-Alumina iyona eshibhile kakhulu, futhi inqubo yokulungiselela izinto zokusetshenziswa zempuphu isivuthiwe kakhulu, kuyilapho i-zirconia ne-silicon nitrous oxide zinezinkinga ezisobala kulokhu, okungenye yezingqinamba ezivimbela ukuthuthukiswa kwalezi ezimbili zokugcina. I-silicon nitride, ikakhulukazi, iyona ebiza kakhulu.
Ngokuphathelene nokusebenza, yize amandla, ukuqina kanye nezinye izakhiwo zemishini ze-silicon nitride kanye ne-zirconia zingcono kakhulu kune-alumina, kubonakala sengathi ukusebenza kwezindleko kufanelekile, kodwa empeleni kunezinkinga eziningi. Okokuqala kusuka ku-zirconia, inokuqina okuphezulu, isizathu sokuba khona kwe-stabilizer, kodwa ukuqina kwayo okuphezulu kuncike esikhathini, ayikwazi ukusetshenziswa ekushiseni okuphezulu futhi izinga lokushisa legumbi lincike esikhathini livimbela kakhulu ukuthuthukiswa okungalungile kwe-oxidation, kufanele kushiwo ukuthi incane kunazo zonke ezintathu emakethe. Futhi i-silicon nitride, nayo iyi-ceramic ethandwayo eminyakeni engamashumi amabili edlule, amandla okushaqeka okushisa angagugi kanye nokusebenza okubanzi okuhle, kodwa ukusetshenziswa kwezinga lokushisa kuphansi kunezinye ezimbili; Inqubo yokulungiselela i-silicon nitride nayo iyinkimbinkimbi kakhulu kune-alumina, yize ukusetshenziswa kwesigaba se-silicon nitride kungcono kakhulu kune-zirconia, kodwa ukuqhathanisa okuphelele akukabi kuhle njenge-alumina.
Ukusebenza okungabizi, okuzinzile, ukuhlukahluka kwemikhiqizo ye-alumina ceramics kwaba ukusetshenziswa kokuqala, futhi kuye kwasetshenziswa ku-ceramics ekhethekile yamanje.
Isikhathi sokuthunyelwe: Jan-22-2022