Ububi obukhulu bei-silicon carbideukuthi kunzima sinter!
I-Silicon nitride ibiza kakhulu!
Ukuguqulwa kwesigaba kanye nomphumela oqinisayo we-zirconia awuzinzile futhi ngezinye izikhathi uyasebenza. Uma le nkinga isinqotshiwe, hhayi i-zirconia kuphela, insimu yonke ye-ceramic ingase ibe nempumelelo! .
I-Alumina ivame kakhulu futhi ishibhile, futhi inokumelana okuhle nezinga lokushisa.
I-Zirconia inokumelana nokugqoka okungcono kune-alumina kanye nokushisa okuphezulu, kodwa ukumelana nokushaqeka kwayo okushisayo kubi kune-alumina.
I-Silicon nitride inezici ezinhle ezihlanganisayo njengokumelana nokugqoka kanye nokumelana nokushaqeka okushisayo, kodwa izinga lokushisa lokusetshenziswa liphansi kunalezi ezinye ezimbili. Okubiza kakhulu.
I-Alumina Ceramics yizinto zokuqala ezisetshenziswayo ze-ceramic. Intengo eshibhile, ukusebenza okuzinzile kanye nemikhiqizo ehlukahlukene. Imakethe nakanjani iyi-alumina enkulu kunazo zonke futhi enkulu kunazo zonke, ngani? Qhathanisa lezi ezimbili zokugcina futhi uzoqonda.
Iqhathaniswa ngokuyinhloko ngokusebenza kanye nentengo. Bese kuba nezindleko zokonga ngokombono wemakethe.
Ngokwentengo, i-alumina ishibhe kakhulu, futhi inqubo yokulungiselela impahla eluhlaza eyimpushana nayo ivuthwe kakhulu. Lezi ezimbili zokugcina zinezinkinga ezisobala mayelana nalokhu, okuphinde kube ngenye yezingqinamba ezivimbela ukuthuthukiswa kokubili kokugcina.
Mayelana nokusebenza, izici zemishini ezifana namandla nokuqina kwe-silicon nitride ne-zirconia zingcono kakhulu kune-alumina. Kubonakala sengathi ukusebenza kwezindleko kufanelekile, kodwa empeleni kunezinkinga eziningi.
Ngokombono we-zirconia, inokuqina okuphezulu ngenxa yobukhona be-stabilizers, kodwa ukuqina kwayo okuphezulu kuhambisana nesikhathi. Isibonelo, ngemuva kokuthi idivayisi ye-zirconia ishiywe emoyeni isikhathi esithile, izolahlekelwa ukuzinza nokusebenza kuzokwehla kakhulu noma ngisho nokuqhekeka! !! !! Ngaphezu kwalokho, asikho isigaba se-metastable ekushiseni okuphezulu, ngakho-ke akukho ukuqina okuphezulu. Ngakho-ke, ukusetshenziswa kokushisa okuphezulu nokushisa kwekamelo kungavimbela kakhulu ukuthuthukiswa kwe-zirconia. Kufanele kushiwo ukuthi incane kunazo zonke izimakethe ezintathu.
Uma sikhuluma nge-silicon nitride, iphinde yaba i-ceramic ethandwayo emashumini amabili eminyaka adlule, kodwa inqubo yayo yokulungisa umkhiqizo ophelile nayo iyinkimbinkimbi kakhulu kune-alumina, engcono kakhulu kune-zirconia, kodwa namanje ayilungile njenge-alumina.
Isikhathi sokuthumela: Dec-26-2019