Amandla okushisa aphezulu e-ceramics

I-Deqing Yehui Ceramic Parts Manufacture Co., Ltd. itholakala e-Deqing County, Huzhou City, Province of Zhejiang, China.Iqhele ngamakhilomitha angama-200 ukusuka echwebeni laseShanghai, sisebenza ngokukhethekile ekwenzeni iZirconia Ceramics kanye nezingxenye ze-Alumina Ceramic ngeminyaka eyi-10.

Ukumelana nezinga lokushisa okuphezulu kwezitsha zobumba zesakhiwo ngokuvamile kungcono, ngokuvamile kube ngaphansi kuka-800°C, futhi izinga lokushisa linomthelela omncane emandleni ezinto zobumba.Uma kuqhathaniswa ne-covalent bond ceramics, izitsha zobumba eziboshwe nge-ion zinokumelana nezinga lokushisa eliphansi.Ngokuvamile, ebangeni lokushisa eliphansi, ukwehluleka kokuphuka kwe-ceramics ukuziphatha okuphukayo, okungukuthi, akukho ukuguqulwa kwepulasitiki, futhi uhlobo lokugcina luncane kakhulu, futhi luzwela kakhulu kumaphutha amancane.Kodwa-ke, endaweni yokushisa ephezulu, i-ceramics ingakhiqiza ukuguqulwa okuncane kwepulasitiki ngaphambi kokuphuka, ubunzima bokugcina bukhuphuka kakhulu, futhi kunesilinganiso esincane sokuziphatha kwe-elastoplastic.Ngaphezu kwalokho, ukuzwela kwamandla kumaphutha kuyahluka kakhulu.Umngcele ophakathi kwendawo yokushisa ephansi kanye nendawo yokushisa ephezulu ekhiqiza lokhu kuguqulwa kwempahla ngokuvamile ibizwa ngokuthi izinga lokushisa le-brittle ductility transition.Izinga lokushisa le-brittle ductility transition lihlobene eduze nokwakheka kwamakhemikhali e-ceramic kanye nohlobo lwebhondi ye-valence.Okufanelekile, kodwa futhi kuhlobene ne-microstructure ye-ceramic, ukwakheka kwesigaba somngcele wokusanhlamvu, ikakhulukazi ukwakheka nokuqukethwe kwesigaba sengilazi yomngcele wokusanhlamvu.Emazingeni okushisa aphezulu, ngaphezu kwezinga lokushisa lokuguqulwa kwe-brittle ductility, amandla ezinto eziningi ze-ceramic azokwehla.Kumaceramics e-MgO anesibopho se-ion, izinga lokushisa le-brittle ductility transition liphansi kakhulu, futhi amandla ayancipha ngokunyuka kwezinga lokushisa cishe ukusuka kuzinga lokushisa legumbi.Izinga lokushisa le-brittle ductility transition le-Al2O3 licishe libe ngu-900°C, izinga lokushisa le-brittle ductility transition le-hot-press sintered Si3N4 licishe libe ngu-1200°C, kanti izitsha zobumba ze-SiC zingakwazi ukumelana namazinga okushisa angu-1600°C.