I-Reaction sintering silicon carbide iyindlela yokulungiselela izinto zobumba ezisebenza kakhulu. Isabela futhi icindezele i-silicon carbide powder namanye amakhemikhali ngaphansi kwezimo zokushisa eziphezulu ukuze ikhiqize ukuminyana okuphezulu, ukuqina okuphezulu, ukumelana nokugqoka okuphezulu kanye nezinto zokumelana nokugqwala okuphezulu.
1. Indlela yokulungiselela. Inqubo yokulungiselela ye-reactive sintering silicon carbide ngokuvamile ihlanganisa izinyathelo ezimbili: ukusabela kanye ne-sintering. Esigabeni sokusabela, i-silicon carbide powder ihlangana namanye amakhemikhali emazingeni okushisa aphezulu ukuze yakhe inhlanganisela enamaphuzu ancibilikayo aphansi, njenge-alumina, i-boron nitride ne-calcium carbonate. Lezi zinhlanganisela zingasebenza njengezibophezelo kanye nezigcwalisi ukusiza ukukhulisa ikhono lokubopha kanye noketshezi lwezimpushana ze-silicon carbide ngenkathi kunciphisa ama-pores kanye nokukhubazeka kokusebenza. Esigabeni se-sintering, umkhiqizo wokusabela ufakwa emazingeni okushisa aphezulu ukuze wenze i-ceramic material eminyene. Izinto ezifana nezinga lokushisa, ingcindezi kanye nomoya ovikelayo zidinga ukulawulwa enqubweni ye-sintering ukuze kuqinisekiswe ukuthi izinto zisebenza kahle. I-silicon carbide ceramic material etholiwe inezici zokuqina okuphezulu, amandla aphezulu, ukumelana nokugqwala okuphezulu nokumelana nokugqoka okuphezulu.
2. Izakhiwo. I-Reaction-sintered silicon carbide inezinto eziningi ezinhle kakhulu, okwenza isetshenziswe kabanzi emikhakheni eminingi. Okokuqala, izinto ze-silicon carbide ceramic zinobulukhuni obuphakeme kakhulu futhi zingasika izinto eziqinile njengensimbi. Okwesibili, izinto zokwakha ze-silicon carbide ceramic zinokuphikiswa okuhle kokugqoka futhi zingasetshenziswa isikhathi eside ngaphansi kwezimo ezinzima ezifana nokushisa okuphezulu nokucindezela okuphezulu. Ngaphezu kwalokho, izinto zokwakha ze-silicon carbide ceramic zinokumelana nokugqwala okuphezulu kanye nokuzinza okuphezulu kwezinga lokushisa, futhi zingasetshenziswa isikhathi eside ezindaweni ezigqwalile namazinga okushisa aphezulu.
3. Izinkambu zokufaka isicelo. I-Reaction-sintered silicon carbide isetshenziswa emikhakheni eminingi. Isibonelo, embonini yokukhiqiza, izinto ze-silicon carbide ceramic zisetshenziswa kakhulu kuma-abrasives, amathuluzi okusika kanye nezingxenye zokugqoka. Ukuqina kwayo okuphezulu nokumelana nokugqoka kwenza kube usizo ekusikeni, ekugayeni nasekugayeni
Ilungele ukupholisha nezinye izinkambu. Embonini yamakhemikhali, izinto ze-silicon carbide ceramic zingasetshenziswa ukukhiqiza amakhemikhali afana ne-sulfuric acid nama-acids aqinile njenge-hydrofluoric acid ngenxa yokumelana nokugqwala okuphezulu kanye nokuzinza okuphezulu kwezinga lokushisa. Emkhakheni we-aerospace nokuzivikela, izinto ze-silicon carbide ceramic zingasetshenziswa ukwenza ama-missile casings nezinto zokuvikela ezishisayo zezindiza ezinesivinini esikhulu. Ngaphezu kwalokho, izinto zokwakha ze-silicon carbide ceramic nazo zingasetshenziswa emkhakheni we-biomedical wamalunga okwenziwa kanye nezinsimbi zokuhlinza amathambo, ngoba zine-biocompatibility enhle nokumelana nokugqoka.
I-Reaction sintering silicon carbide iyindlela yokulungiselela izinto zobumba ezisebenza kakhulu. Isabela futhi icindezele i-silicon carbide powder namanye amakhemikhali ngaphansi kwezimo zokushisa eziphezulu ukuze ikhiqize ukuminyana okuphezulu, ukuqina okuphezulu, ukumelana nokugqoka okuphezulu kanye nezinto zokumelana nokugqwala okuphezulu. I-silicon carbide ceramic materials inezakhiwo ezinhle, njengokuqina okuphezulu, ukumelana nokugqoka okuphezulu, ukumelana nokugqwala okuphezulu kanye nokuzinza kwezinga lokushisa eliphezulu, ngakho-ke isetshenziswa kabanzi emikhakheni eminingi efana nokukhiqiza, imboni yamakhemikhali, i-aerospace kanye nezindawo zokuzivikela kanye nezinkambu ze-biomedical.
Isikhathi sokuthumela: Jul-08-2023