Ngawaphi amanqanaba amathathu ahlukeneyo okusila kwi-alumina ceramics? Ukusila yinkqubo ephambili ye-alumina ceramics yonke ekuvelisweni kwayo, kwaye utshintsho oluninzi luya kwenzeka ngaphambi nasemva kokusila, iXiaobian elandelayo iza kugxila kumanqanaba amathathu ahlukeneyo okusila kwi-alumina ceramics:
Okokuqala, ngaphambi kokuba kuqale ukubola, ulawulo lobushushu kweli nqanaba lubaluleke ngakumbi, kuba ubushushu buyaqhubeka nokunyuka, umbungu uya kuncipha, kodwa amandla kunye noxinano aluyi kutshintsha kakhulu, ukuba luncinci kakhulu, ingqolowa ayizukutshintsha ngobukhulu, kodwa umbungu kweli nqanaba uthambekele ngakumbi ekuqhekekeni, ikakhulu ngenxa yokuba i-binder kunye namanzi zikhutshiwe ngokupheleleyo, ngoko ke kufuneka sinikele ingqalelo kwisantya sokunyuka kobushushu.
Okwesibini, kwinkqubo yokusila, ubushushu buya kutshintsha ubukhulu obuncinci, umzimba we-embryo uyancipha kancinci kancinci, kwaye ubuninzi buya kutshintsha kakhulu. Nangona kungekho tshintsho lucacileyo kwi-microscopic grain, onke amasuntswana ngokusisiseko awasabotshelelwanga, kwaye yonke i-pores iya kuba ncinci kwaye incinci. Ngokufanayo, ngenxa yokuba umzimba we-embryo unotshintsho kumthamo, ngoko ke kulula ukubonakala i-deformation kunye ne-cracking phenomenon.
Okwesithathu, ekugqibeleni, emva kokubola, ubushushu buya kunyuka kakhulu, umzimba we-embryo kunye noxinano luya kudlula kutshintsho olukhulu, utshintsho lwengqolowa kwi-micro luyabonakala ngakumbi, ii-pores ziya kuba ncinci, ukwakheka kwee-pores ezininzi ezizimeleyo, kodwa kuya kubakho ii-pores ezisele ngqo kwingqolowa.
Ixesha lokuthumela: Septemba-18-2023