I-sintered silicon carbide iyinto ebalulekile ye-ceramic, esetshenziswa kabanzi ezindaweni zokushisa okuphezulu, umfutho ophezulu kanye namandla aphezulu. I-reactive sintering ye-SIC iyisinyathelo esibalulekile ekulungiseleleni izinto ze-sintered SIC. Ukulawulwa okuhle kakhulu kwe-sintering SIC reaction kungasisiza silawule isimo se-reaction futhi sithuthukise ikhwalithi yomkhiqizo. Indlela engcono kakhulu yokulawula ye-sintered silicon carbide reaction ixoxwa ngayo kuleli phepha.
1. Ukuthuthukisa izimo ze-SIC ezibangela ukusabela okubi
Izimo zokusabela ziyimingcele ebalulekile yokusabela kwe-sintered silicon carbide, okuhlanganisa izinga lokushisa lokusabela, ingcindezi yokusabela, isilinganiso sesisindo se-reactant kanye nesikhathi sokusabela. Lapho wenza izimo zokusabela zibe ngcono, kuyadingeka ukulungisa ngokwezidingo ezithile zokusetshenziswa kanye nendlela yokusabela.
(1) Izinga lokushisa lokusabela: Izinga lokushisa lokusabela lingenye yezinto ezibalulekile ezithinta isivinini sokusabela kanye nekhwalithi yomkhiqizo. Ezingeni elithile, lapho izinga lokushisa lokusabela liphezulu, isivinini sokusabela sishesha, ikhwalithi yomkhiqizo iyanda. Kodwa-ke, izinga lokushisa lokusabela eliphezulu kakhulu lizoholela ekwandeni kwama-pores kanye nemifantu kumkhiqizo, okuthinta ikhwalithi yomkhiqizo.
(2) Ukucindezela kokusabela: Ukucindezela kokusabela nakho kunomthelela esivinini sokusabela kanye nobuningi bomkhiqizo. Ngaphakathi kobubanzi obuthile, lapho ukucindezela kokusabela kukhuphuka, isivinini sokusabela sishesha futhi ubuningi bomkhiqizo buphakeme. Kodwa-ke, ukucindezela kokusabela okuphezulu kakhulu kungaholela ezimbotsheni nasezimfantwini eziningi kumkhiqizo.
(3) isilinganiso sobuningi be-reactant: isilinganiso sobuningi be-reactant singenye into ebalulekile ethinta isivinini sokusabela kanye nekhwalithi yomkhiqizo. Lapho isilinganiso sobuningi be-carbon kuya ku-silicon sifanele, izinga lokusabela kanye nobuningi bomkhiqizo. Uma isilinganiso sobuningi be-reactant singafanele, sizothinta izinga lokusabela kanye nobuningi bomkhiqizo.
(4) Isikhathi sokusabela: Isikhathi sokusabela singenye yezinto ezithinta isivinini sokusabela kanye nekhwalithi yomkhiqizo. Ngaphakathi kobubanzi obuthile, isikhathi sokusabela side, isivinini sokusabela siyancipha futhi ikhwalithi yomkhiqizo iphakeme. Kodwa-ke, isikhathi eside kakhulu sokusabela sizoholela ekwandeni kwama-pores kanye nemifantu kumkhiqizo, okuthinta ikhwalithi yomkhiqizo.
2. Ukulawulwa kwenqubo ye-reactive sintering silicon carbide
Enkambisweni yokusabela kwe-SIC okuncibilikisayo, kuyadingeka ukulawula inqubo yokusabela. Inhloso yokulawula ukuqinisekisa ukuzinza kokusabela kanye nokuvumelana kwekhwalithi yomkhiqizo. Ukulawulwa kwenqubo yokusabela kuhlanganisa ukulawula izinga lokushisa, ukulawula ingcindezi, ukulawula umoya kanye nokulawula ikhwalithi yokusabela.
(1) Ukulawula izinga lokushisa: Ukulawula izinga lokushisa kungenye yezici ezibalulekile zokulawula inqubo yokusabela. Ukulawula izinga lokushisa Izinga lokushisa lokusabela kufanele lilawulwe ngokunembe ngangokunokwenzeka ukuqinisekisa ukuzinza kwenqubo yokusabela kanye nekhwalithi yomkhiqizo ehambisanayo. Ekukhiqizeni kwanamuhla, uhlelo lokulawula ikhompyutha luvame ukusetshenziselwa ukulawula ngokunembile izinga lokushisa lokusabela.
(2) Ukulawula ingcindezi: Ukulawula ingcindezi kungenye isici esibalulekile sokulawula inqubo yokusabela. Ngokulawula ingcindezi yokusabela, ukuzinza kwenqubo yokusabela kanye nokuvumelana kwekhwalithi yomkhiqizo kungaqinisekiswa. Ekukhiqizweni kwanamuhla, uhlelo lokulawula ikhompyutha luvame ukusetshenziswa ukulawula ngokunembile ingcindezi yokusabela.
(3) Ukulawulwa kwesimo sezulu: Ukulawulwa kwesimo sezulu kubhekisela ekusetshenzisweni komkhathi othize (njengomkhathi ongasebenzi) enkambisweni yokusabela ukulawula inqubo yokusabela. Ngokulawula umkhathi, ukuzinza kwenqubo yokusabela kanye nokuvumelana kwekhwalithi yomkhiqizo kungaqinisekiswa. Ekukhiqizweni kwesimanje, uhlelo lokulawula ikhompyutha luvame ukusetshenziswa ukulawula umkhathi.
(4) Ukulawulwa kwekhwalithi ye-Reactant: Ukulawulwa kwekhwalithi ye-Reactant kungenye yezici ezibalulekile ukuqinisekisa ukuzinza kwenqubo yokusabela kanye nokuvumelana kwekhwalithi yomkhiqizo. Ngokulawula ikhwalithi ye-reactants, ukuzinza kwenqubo yokusabela kanye nokuvumelana kwekhwalithi yomkhiqizo kungaqinisekiswa. Ekukhiqizweni kwesimanje, uhlelo lokulawula ikhompyutha luvame ukusetshenziswa ukulawula ikhwalithi ye-reactants.
Ukulawulwa okuhle kwe-SIC e-reactive sintering kuyisinyathelo esibalulekile sokulungiselela izinto ze-SIC ezi-sintered ezisezingeni eliphezulu. Ngokwenza ngcono izimo zokusabela, ukulawula inqubo yokusabela kanye nokuqapha imikhiqizo yokusabela, ukuzinza kwenqubo yokusabela kanye nokuvumelana kwekhwalithi yomkhiqizo kungaqinisekiswa. Ekusetshenzisweni okungokoqobo, ukusabela kwe-silicon carbide e-sintered kudinga ukulungiswa ngokuya ngezimo ezithile zokusetshenziswa ukuze kuhlangatshezwane nezidingo zokusetshenziswa ezahlukene.
Isikhathi sokuthunyelwe: Juni-05-2023