Intsimbi engatyiwayo ine-chromium eyi-10.5% ubuncinane, eyenza umaleko we-oxide obhityileyo, ongabonakaliyo, nonamathela kakhulu kumphezulu wentsimbi obizwa ngokuba yi-"passive layer." Le maleko ingatyiwayo yiyo eyenza intsimbi engatyiwayo imelane kakhulu nomhlwa kunye nokugqwala.
Xa intsimbi ivezwe kwioksijini kunye nokufuma, i-chromium ekwintsimbi idibana neoksijini emoyeni ukuze yenze umaleko omncinci we-chromium oxide phezu komphezulu wentsimbi. Olu layer lwe-chromium oxide lukhusela kakhulu, njengoko luzinzile kwaye aluqhekeki lula. Ngenxa yoko, luthintela ngempumelelo intsimbi engaphantsi kwalo ukuba ingadibani nomoya kunye nokufuma, okuyimfuneko ukuze inkqubo yokugqwala yenzeke.
Umaleko ongasebenziyo ubalulekile ekumelaneni nokugqwala kwentsimbi engagqwaliyo, kwaye ubungakanani be-chromium kwintsimbi bumisela amandla ayo okumelana nokugqwala nokugqwala. Umxholo ophezulu we-chromium uphumela kumaleko ongasebenziyo okhuselayo ngakumbi kunye nokuxhathisa ukugqwala okungcono. Ukongeza, ezinye izinto ezifana ne-nickel, i-molybdenum, kunye ne-nitrogen nazo zingongezwa kwintsimbi ukuphucula ukuxhathisa kwayo ukugqwala.
Ixesha lokuthumela: Februwari-15-2023