Ezindaweni ezisezingeni eliphezulu njengama-semiconductors, amandla amasha, kanye ne-aerospace, i-ceramic material emnyama idlala indima ebalulekile buthule. Ikonai-silicon carbide ceramic- into enobunzima obuqhathaniswa nedayimane, eshintsha ubuso bemboni yesimanje ngokunembile ngenxa yokumelana kwayo nezinga lokushisa eliphezulu, ukumelana nokugqwala kanye ne-thermal conductivity ephezulu. Kodwa okuncane okwaziwayo ukuthi ukuguqula i-silicon carbide powder eqinile ibe amadivaysi anembayo, inqubo yomlingo "yokwenza izinga lokushisa eliphezulu" iyadingeka.
I. Inqubo Ye-Sintering: Umlingo Obalulekile Ekuguquleni Amatshe abe yigolide
Uma i-silicon carbide powder iqhathaniswa ne-jade engapholishiwe, inqubo ye-sintering iyinqubo eyinhloko yokuyibumba ibe umkhiqizo omuhle. Ngokwenza izinga lokushisa eliphezulu ku-800-2000℃, izinhlayiya zempushana ezilingana ne-micron ziphinde-” zixhawulane “ezingeni le-athomu, zenze umzimba wobumba oqinile futhi oqinile. Izinqubo ezihlukene zokucwenga, njengezindlela ezihlukene zokuqopha, izinto ezisetshenziswayo ezinezici zokusebenza ezihlukile:
1. I-Atmospheric pressure sintering: Okuvamile kakhulu “ukucwilisa kancane ekushiseni okuphansi”
Njengoba nje isobho elimnandi eliphekwe kancane lidinga ukubiliswa ekushiseni okuphansi, le nqubo ivumela impushana ukuthi iminyene ngokwemvelo ngokusebenzisa amazinga okushisa ahlala isikhathi eside. Nakuba umjikelezo umude uma kuqhathaniswa, ungagcina “ukunambitheka kwasekuqaleni” kwempahla futhi ufaneleka kakhulu ezingxenyeni zemishini ye-semiconductor enezidingo eziqinile zokuhlanzeka.
2. I-hot-pressing sintering: “Isu lokuqamba lokucindezela okuphezulu” elilawulwa ngokunembile.
Ukusebenzisa ukucindezela komshini endaweni yokushisa ephezulu kufana nokunikeza "i-hot compress massage" enembile kumpahla, engaqeda ngokushesha i-voids yangaphakathi. Izingxenye ze-ceramic ezikhiqizwa yile nqubo zinokuminyana eduze nenani lethiyori futhi ziyinketho ekahle yokukhiqiza ama-bearings anemba kanye nezimpawu.
3. I-Rection Sintering: “Umlingo Wekhemikhali” Emhlabeni Wezinto Zokusebenza
Ngokusebenzisa ngobuhlakani ukusabela kwamakhemikhali phakathi kwe-silicon ne-carbon, ama-voids agcwaliswa ngokuzenzakalelayo ngesikhathi senqubo yokucwilisa. Lesi sici "sokuziphilisa" sikwenza ithuluzi elinamandla lokukhiqiza izingxenye eziyinkimbinkimbi nezingajwayelekile, ezilungele imikhiqizo ehlukahlukene evikela izinga lokushisa eliphezulu, ukumelana nokuguga, ukumelana nokugqwala noma ezinye izingxenye ezenziwe ngokwezifiso.
Ii. Ukukhetha Inqubo: Ukuhlakanipha Kokuthunga Ukuze Kulingane
Njengoba nje abathungi abakhulu bekhetha imithungo ngokusekelwe ezicini zendwangu, onjiniyela badinga ukucabangela ngokuphelele izidingo zomkhiqizo:
Lapho usebenzisana nezingxenye ezimise okungavamile ezinodonga oluncane oluncane, "ubuchwepheshe bokungena" be-reaction sintering bungagcina umumo ophelele.
Amathreyi e-semiconductor anezidingo eziqinile zezindawo eziyisicaba zingaqinisekisa ukuguquguquka okuyiziro ngokufaka ingcindezi evamile.
Lapho usebenzisana nezingxenye ezinomthwalo omkhulu, ukuminyana okuphezulu kakhulu kokucindezela okushisayo kuvame ukukhethwa.
Iii. Ukuphumelela Okungabonakali Kwezobuchwepheshe
Emlandweni wokuziphendukela kwemvelo kobuchwepheshe be-sintering, izindlela ezintsha ezimbili ezifihliwe zibaluleke kakhulu: ukungezwa okuncane kwe-AIDS ye-sintering kufana ne-"glue yamangqamuzana", enciphisa ukusetshenziswa kwamandla ngenkathi ithuthukisa amandla; Isistimu yokulawula izinga lokushisa yedijithali iqhathaniswa “nompheki ohlakaniphile”, ogcina ukushintshashintsha kwezinga lokushisa phakathi kuka-±5℃ futhi eqinisekisa ukuvumelana kokusebenza kweqoqo ngalinye lezinto.
Kusukela kumkhakha wezimboni ongagugi futhi umelana nokugqwala kuya embonini ethuthukisiwe ye-semiconductor, izitsha zobumba ze-silicon carbide zilungisa kabusha isimo semboni yesimanje. Ukuqamba okusha okuqhubekayo kobuchwepheshe be-sintering kufana nokunikeza amaphiko kule nto yomlingo, ukuyivumela ukuthi indizele esibhakabhakeni esibanzi. Njengomkhiqizi ochwepheshe obambe iqhaza ngokujulile emkhakheni we-silicon carbide ceramics isikhathi esingaphezu kweshumi leminyaka, uShandong Zhongpeng uyayiqonda inkhulumomphendvulwano phakathi kwezinto zokwakha nokulawula ukushisa kangcono kunanoma ubani omunye. Ukulungiswa ngakunye kwejika le-sintering kuwukuphinda ukwakhiwa kabusha kukanxantathu wegolide "wesikhathi sokushisa-ingcindezi". Ukucwayiza kwazo zonke iziko nomlilo womlilo kuyaqhubeka nokubhala isahluko sokuziphendukela kwemvelo kwezitsha zobumba zezimboni. Ngokuthembela ekuthembekeni kocwaningo oluzimele kanye nentuthuko kanye nobuchwepheshe obuningi obunelungelo lobunikazi, sihlala sizibophezele ekunikezeni amakhasimende isisombululo esisodwa ukusuka ekuhlanzweni kwempahla eluhlaza kuya ekushiseni okunembile, siqinisekisa ukuthi yonke imikhiqizo ye-silicon carbide ceramic ithwala imfudumalo yeminyaka eyishumi yobuciko. Indlela engaphambili ithambile, futhi ngokuqamba ngokuphindaphindiwe, iba yintsha. Sikumema ngobuqotho ukuba uhlanganyele nathi ekufakazeni ukuthi le nhlansi yokuhlakanipha ezitsheni zobumba zezimboni ikhanyisa kanjani izinto ezingenakwenzeka. Sihlala sikholelwa ukuthi yonke intuthuko kwisayensi yezinto zokwakha iqongelela amandla okuba isintu seqe imikhawulo yezobuchwepheshe.
Isikhathi sokuthumela: Apr-17-2025