Ni irihe tandukaniro riri hagati ya reaction ya karubide ya silicon?

Iyo bigezesilicon carbide ceramics, hari ubwoko bubiri bwingenzi: reaction ihujwe kandi yacumuye. Mugihe ubwoko bwombi bwibumba butanga urwego rwo hejuru rwo kuramba no kwambara, hari itandukaniro ryingenzi hagati yibi byombi.

Reka duhere kuri reaction ihuza silicon karbide ceramics. Ububumbyi buri hagati ya 85% na 90% karbide ya silicon kandi irimo silikoni. Ubushyuhe bwabo ntarengwa ni 1380 ° C. Imwe mu nyungu zingenzi za reaction-ihuza silicon karbide ceramics nuko ishobora guhuzwa nubunini bunini. Ibi bituma bakora ibikoresho byiza byo gukora ibicuruzwa bidasanzwe kandi byumwuga. Byongeye kandi, coefficente yo kwaguka hamwe no guhangana n’imyenda myiza y’ibi bikoresho by’ubutaka bituma bahitamo gukundwa cyane mu bucukuzi bw’amabuye y'agaciro.

Carbide ya silicon idafite ingufu ifite karbide nyinshi ya silicon, ishobora kugera kuri 99%, kandi ubushyuhe bwo hejuru ni 1650 ° C. Coefficient yo kwaguka itangizwa mugihe cyo gucumura, bigatuma SiC itagira igitutu cyiza cyo gukora ibice bya SiC neza. Bitewe nubusobanuro bwacyo buhanitse, karbide ya silicon idafite imbaraga ikoreshwa mugukora ibishushanyo nibice bidashobora kwihanganira kwambara.

Usibye ibishushanyo bisobanutse neza no kwambara ibice, ibikoresho byo mu itanura ryo mu rwego rwo hejuru mu nganda z’imiti birashobora kwifashisha ubushyuhe bwo hejuru bw’ubushyuhe bwa karubide ya silicon idafite ingufu. Kubashaka uburyo bwo guhinduranya ubushyuhe bukoreshwa mubikoresho byabo byo gutunganya imiti, karbide ya silicon idafite ingufu rwose ni amahitamo meza.

Muri rusange, guhuza ibikorwa hamwe no gucumura bidafite ingufu za ceramika ya SiC, nubwo buriwese ufite ibyiza nibibi, bikwiranye ninganda zitandukanye. Niba ukeneye ibicuruzwa bidasanzwe cyangwa binini binini bishobora kwihanganira kwambara, reaction ya silicon karbide ceramics irashobora kuba amahitamo meza kuri wewe. Kubice byinshi byoroshye bigomba kwihanganira ubushyuhe bwo hejuru, karbide ya silicon idafite imbaraga irashobora guhitamo neza. Ntakibazo cyubwoko bwa silicon karbide ceramic wahisemo, urashobora kwizera ko bizatanga igihe kirekire kandi kirambye umushinga wawe usaba.