Ibiranga gusya
Iyo uhuye nibikoresho bigoye-imashini nka Hastelloy, waspaloy, Inconel na Kovar, gutunganya ubumenyi nuburambe ni ngombwa cyane. Kugeza ubu, hari byinshi kandi byinshi byifashishwa bya nikel bishingiye kuri nikel, ahanini bikoreshwa mu gukora ibice bimwe byingenzi mu kirere, ubuvuzi n’inganda. Ibi bikoresho bifite imbaraga nyinshi, birwanya ruswa, kandi birashobora kwihanganira ubushyuhe bwinshi cyane. Bimwe mubintu bidasanzwe byongewe kubikoresho byavuzwe haruguru kugirango ubone imikorere isumba iyindi. Kurundi ruhande ariko, ibyo bikoresho nabyo biragoye cyane gusya.
Turabizi ko nikel na chromium aribintu bibiri byingenzi byongeweho muri nikel ishingiye kuri alloys. Ongeramo nikel birashobora kongera ubukana bwibikoresho, kongeramo chromium birashobora kunoza ubukana bwibintu, kandi uburinganire bwibindi bice burashobora gukoreshwa muguhishurira kwambara igikoresho. Ibindi bintu byongewe kubikoresho bishobora kuba birimo: silicon, manganese, molybdenum, tantalum, tungsten, nibindi. Birakwiye ko tumenya ko tantalum na tungsten nabyo aribintu byingenzi bikoreshwa mugukora karbide ya sima, ishobora kuzamura imikorere ya karbide ya sima, ariko kongeramo ibi bintu mubikoresho byakazi bituma bigora gusya, hafi nko guca igikoresho kimwe cya karbide nindi.
Kuki gusya gukata ibindi bikoresho bimeneka vuba mugihe cyo gusya nikel ishingiye kuri nikel? Ni ngombwa kubyumva. Gukora nikel ishingiye kuri nikel, igiciro cyibikoresho ni kinini, kandi ikiguzi nikubye inshuro 5 kugeza 10 zo gusya ibyuma rusange.
Ntawabura kuvuga, ubushyuhe nicyo kintu cyingenzi kigira ingaruka kubuzima bwibikoresho mugihe cyo gusya nikel ishingiye kuri nikel, kuko nibikoresho byiza bya karbide bishobora gusenywa nubushyuhe bukabije. Igisekuru cyubushyuhe bukabije cyane ntabwo ari ikibazo cyo gusya nikel alloys. Iyo rero usya ayo mavuta, ubushyuhe bugomba kugenzurwa. Mubyongeyeho, ni ngombwa cyane kumenya agaciro k'ubushyuhe butangwa mugihe utunganya ibikoresho bitandukanye (ibikoresho byihuta byihuta, ibikoresho bya karbide cyangwa ibikoresho bya ceramic).
Ibikoresho byinshi byangiritse nabyo bifitanye isano nibindi bintu, kandi ibikoresho bitujuje ubuziranenge hamwe nabafite ibikoresho birashobora kugabanya ubuzima bwibikoresho. Iyo ubukana bwibikorwa byafunzwe bidahagije kandi kugenda bibaho mugihe cyo gutema, birashobora gutera kuvunika matrike ya sima ya sima. Rimwe na rimwe, uduce duto dukura ku nkombe, kandi rimwe na rimwe igice kimenagura karbide, bigatuma bidashoboka gukomeza gutema. Birumvikana ko iyi chiping ishobora nanone guterwa na karbide ikomeye cyangwa umutwaro uremereye cyane. Muri iki gihe, ibikoresho byihuta byibyuma bigomba gutekerezwa mugutunganya kugirango bigabanye kugaragara. Birumvikana ko ibyuma byihuta byihuta bidashobora kwihanganira ubushyuhe bwinshi nka karbide ya sima. Mubyukuri ibikoresho byo gukoresha bigomba kugenwa buri kibazo.