I-silicon carbide ye-Sintered iyinto ebalulekile ye-ceramic, esetshenziswa kabanzi ekushiseni okuphezulu, ukucindezela okuphezulu kanye nezinkambu zamandla aphezulu. I-reaction sintering ye-sic isinyathelo esibalulekile ekulungiseleleni izinto ze-SIC ezihlanganisiwe. Ukulawula okuphelele kokusabela kwe-silicon carbide kungasisiza ukulawula kangcono izimo zokusabela futhi sithuthukise ikhwalithi yomkhiqizo.
1. Ukuthuthukisa ukusabela sintering Silicon carbide izimo
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. Phakathi kwebanga elithile, izinga lokushisa lokusabela liphezulu, isivinini sokusabela siyashesha kanye nekhwalithi yomkhiqizo ephezulu. Kodwa-ke, izinga lokushisa eliphakeme kakhulu lokusabela kuzoholela ekwandeni kwezimbotshana nokuqhekeka komkhiqizo, okuthinta ikhwalithi yomkhiqizo.
(2) Ingcindezi yokusabela: Ingcindezi yokusabela nayo inomthelela esivinini sokusabela kanye nokuminyana komkhiqizo. Phakathi kwebanga elithile, ukuphakama kwengcindezi yokusabela, isivinini sokusabela siyashesha futhi sikhuphuke ukuminyana komkhiqizo. Kodwa-ke, ingcindezi ephezulu kakhulu yokusabela nayo ingaholela ekwandeni kwama-pores kanye nokuqhekeka komkhiqizo.
(3) Reactant mass ratio: I-reactant mass ratio ingenye into ebalulekile ethinta isivinini sokusabela kanye nekhwalithi yomkhiqizo. Lapho isilinganiso se-mass of carbon to silicon sifaneleka, izinga lokusabela kanye nekhwalithi yomkhiqizo. Uma isilinganiso se-reactant mass singafaneleki, sizothinta isivinini sokusabela kanye nekhwalithi yomkhiqizo.
(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 kwezimbotshana nokuqhekeka komkhiqizo, okuthinta ikhwalithi yomkhiqizo.
2. Ukulawula inqubo ye-silicon carbide yokusabela-sintering
Enqubweni yokusabela ye-sintered silicon carbide, kuyadingeka ukulawula inqubo yokusabela. Umgomo wokulawula uwukuqinisekisa ukuthi ukusabela kuzinzile futhi ikhwalithi yomkhiqizo iyahambisana. Ukulawulwa kwenqubo yokusabela kuhlanganisa 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 inqubo yokusabela ezinzile 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, kungenzeka ukuqinisekisa ukuzinza kwenqubo yokusabela kanye nokuvumelana kwekhwalithi yomkhiqizo. Ekukhiqizeni kwanamuhla, umkhathi uvame ukulawulwa uhlelo lokulawula ikhompuyutha.
(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-react-sintered silicon carbide kuyisinyathelo esibalulekile sokulungiselela izinto ezisezingeni eliphezulu ze-silicon carbide. Ngokulungiselela izimo zokusabela, ukulawula inqubo yokusabela nokuqapha imikhiqizo yokusabela, ukuzinza kwenqubo yokusabela kanye nokuvumelana kwekhwalithi yomkhiqizo kungaqinisekiswa. Ekusetshenzisweni okungokoqobo, ukusabela kwe-silicon carbide e-sintered kudinga ukulungiswa ngokuvumelana nezimo ezithile zohlelo lokusebenza ukuze kuhlangatshezwane nezidingo ezahlukene zohlelo lokusebenza.
Isikhathi sokuthumela: Jul-06-2023