Yiziphi izigaba ezintathu ezihlukene ze-sintering ze-alumina ceramics? I-Sintering iyinqubo eyinhloko yazo zonke izitsha zobumba ze-alumina lapho kukhiqizwa, futhi izinguquko eziningi ezihlukene zizokwenzeka ngaphambi nangemva kokucwiliswa, okulandelayo i-Xiaobian izogxila ezigabeni ezintathu ezihlukene zokucwenga zezitsha zobumba ze-alumina:
Okokuqala, ngaphambi kokushisa, ukulawulwa kwezinga lokushisa kulesi sigaba kubaluleke kakhulu, ngoba izinga lokushisa liyaqhubeka likhuphuka, umbungu uzophinde unciphise, kodwa amandla nokuqina ngeke kushintshe kakhulu, uma kuyi-microscopic, okusanhlamvu ngeke kushintshe ngosayizi. , kodwa umbungu kulesi sigaba uthambekele kakhulu ekuqhekekeni, Ikakhulukazi ngenxa yokuthi i-binder namanzi kukhishwe ngokuphelele, ngakho-ke kufanele sinake isivinini sokukhuphuka kwezinga lokushisa.
Okwesibili, enqubweni ye-sintering, izinga lokushisa lizoshintsha i-amplitude encane, umzimba wombungu kancane kancane uyancipha, futhi ukuminyana kuzoshintsha kakhulu. Nakuba lungekho ushintsho olusobala ohlamvini oluncane oluncane, zonke izinhlayiya ngokuyisisekelo azisaboshiwe, futhi zonke izimbotshana zizoba zincane futhi zibe zincane. Ngokufanayo, ngenxa yokuthi umzimba wombungu unoshintsho lwevolumu, Ngakho-ke kuselula ukuvela ukuguquguquka nokuqhekeka mkhuba.
Okwesithathu, ekugcineni, ngemva kokushisa, izinga lokushisa lizokhuphuka kakhulu, umzimba wombungu kanye nokuminyana kuzobhekana nezinguquko ezinkulu kakhulu, ukuguqulwa kokusanhlamvu ku-micro nakho kubonakala nakakhulu, izimbotshana zizoba zincane, ukwakheka kwezimbotshana eziningi ezingazodwa, kodwa kuzoba khona ezinye izimbotshana ezisele ngqo kokusanhlamvu.
Isikhathi sokuthumela: Sep-18-2023