I-silicon carbide ye-Sintered iyinto ebalulekile ye-ceramic, esetshenziswa kabanzi ekushiseni okuphezulu, ukucindezela okuphezulu kanye nezinkambu zamandla aphezulu. I-reactive sintering ye-SIC isinyathelo esibalulekile ekulungiseleleni izinto ezisetshenziswayo ze-SIC. Ukulawula okuphelele kokusabela kwe-SIntering kungasisiza ukuthi silawule isimo sokusabela futhi sithuthukise ikhwalithi yomkhiqizo. Indlela yokulawula elungile yokusabela kwe-silicon carbide kuxoxwa ngayo kuleli phepha.
1. Ukuthuthukisa ukusabela sintering izimo SIC
Izimo zokusabela ziyimingcele ebalulekile yokusabela kwe-silicon carbide, okuhlanganisa izinga lokushisa lokusabela, ingcindezi yokusabela, isilinganiso sesisindo esisabelayo kanye nesikhathi sokusabela. Lapho ulungiselela izimo zokusabela, kuyadingeka ukulungisa ngokuya ngezidingo ezithile zohlelo lokusebenza kanye nendlela yokusabela.
(1) Izinga lokushisa lokusabela: Izinga lokushisa lokusabela lingenye yezinto ezibalulekile ezithinta isivinini sokusabela kanye nekhwalithi yomkhiqizo. Ebangeni elithile, izinga lokushisa lokusabela liphezulu, isivinini sokusabela siyashesha, ikhwalithi yomkhiqizo iphezulu. Kodwa-ke, izinga lokushisa eliphakeme kakhulu lokuphendula lizoholela ekwandeni kwama-pores kanye nokuqhekeka komkhiqizo, okuthinta ikhwalithi yomkhiqizo.
(2) Ingcindezi yokusabela: Ingcindezi yokusabela nayo inomthelela esivinini sokusabela kanye nokuminyana komkhiqizo. Phakathi kwebanga elithile, ingcindezi yokusabela iphezulu, isivinini sokusabela siyashesha futhi siphezulu ukuminyana komkhiqizo. Kodwa-ke, ingcindezi ephezulu kakhulu yokusabela nayo ingaholela kuma-pores amaningi kanye nokuqhekeka komkhiqizo.
(3) Reactant mass ratio: reactant mass ratio kungenye into ebalulekile ethinta isivinini sokusabela kanye nekhwalithi yomkhiqizo. Lapho i-carbon kuya ku-silicon mass ratio ifanelekile, izinga lokusabela kanye nesisindo somkhiqizo. Uma isilinganiso se-reactant mass singafaneleki, sizothinta izinga lokusabela nesisindo somkhiqizo.
(4) Isikhathi sokusabela: Isikhathi sokusabela singesinye sezici ezithinta isivinini sokusabela kanye nekhwalithi yomkhiqizo. Phakathi kwebanga elithile, isikhathi sokusabela siba side, ijubane lokusabela liyancipha futhi ikhwalithi yomkhiqizo iphezulu. Kodwa-ke, isikhathi eside kakhulu sokuphendula sizoholela ekwandeni kwama-pores nokuqhekeka komkhiqizo, okuthinta ikhwalithi yomkhiqizo.
2. Ukulawulwa kwenqubo ye-reactive sintering silicon carbide
Enqubweni yokusabela kwe-SIC, kuyadingeka ukulawula inqubo yokusabela. Inhloso yokulawula ukuqinisekisa ukuzinza kokusabela kanye nokuvumelana kwekhwalithi yomkhiqizo. Ukulawulwa kwenqubo yokusabela kufaka phakathi ukulawula izinga lokushisa, ukulawula ingcindezi, ukulawulwa komkhathi nokulawula ikhwalithi okusabelayo.
(1) Ukulawula izinga lokushisa: Ukulawula izinga lokushisa kungenye yezici ezibalulekile zokulawula inqubo yokusabela. Ukulawula izinga lokushisa Izinga lokushisa lokusabela kufanele lilawulwe ngokunembile ngangokunokwenzeka ukuze kuqinisekiswe ukuzinza kwenqubo yokusabela kanye nekhwalithi yomkhiqizo engaguquki. Ekukhiqizeni kwanamuhla, uhlelo lokulawula ikhompuyutha luvame ukusetshenziselwa ukulawula ngokunembile izinga lokushisa lokusabela.
(2) Ukulawula ingcindezi: Ukulawula ingcindezi kungenye into ebalulekile yokulawula inqubo yokusabela. Ngokulawula ingcindezi yokusabela, ukuzinza kwenqubo yokusabela kanye nokuvumelana kwekhwalithi yomkhiqizo kungaqinisekiswa. Ekukhiqizeni kwanamuhla, uhlelo lokulawula ikhompuyutha luvame ukusetshenziselwa ukulawula ngokunembile ingcindezi yokusabela.
(3) Ukulawulwa komkhathi: Ukulawulwa komkhathi kubhekisela ekusetshenzisweni komkhathi othize (njengomkhathi ongasebenzi) enqubweni yokusabela ukuze ulawule inqubo yokusabela. Ngokulawula umkhathi, ukuzinza kwenqubo yokusabela kanye nokuvumelana kwekhwalithi yomkhiqizo kungaqinisekiswa. Ekukhiqizeni kwanamuhla, uhlelo lokulawula ikhompuyutha ngokuvamile lusetshenziselwa ukulawula umoya.
(4) Ukulawulwa kwekhwalithi esabelayo: Ukulawulwa kwekhwalithi okusabelayo kungenye yezici ezibalulekile zokuqinisekisa ukuzinza kwenqubo yokusabela kanye nokuvumelana kwekhwalithi yomkhiqizo. Ngokulawula ikhwalithi yama-reactants, ukuzinza kwenqubo yokusabela kanye nokuvumelana kwekhwalithi yomkhiqizo kungaqinisekiswa. Ekukhiqizweni kwesimanje, isistimu yokulawula ikhompuyutha ngokuvamile isetshenziselwa ukulawula ikhwalithi yama-reactants.
Ukulawula okuphelele kwe-SIC esebenzayo ye-sintering kuyisinyathelo esibalulekile sokulungiselela izinto ze-SIC zekhwalithi ephezulu. Ngokulungiselela 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 idinga ukulungiswa ngokuvumelana nezimo ezithile zohlelo lokusebenza ukuze kuhlangatshezwane nezidingo ezahlukene zohlelo lokusebenza.
Isikhathi sokuthumela: Jun-05-2023