Ọla kọpa alloy corrosion

Alloys ọla kọpa nwere ezigbo nguzogide ikuku na corrosion mmiri osimiri, dị ka ọla kọpa silicon,aluminom ọlawere gabazie.Na mgbasa ozi n'ozuzu, ọ na-enwekarị corrosion otu.Enwere ike nrụrụ corrosion nrụgide na ngwọta n'ihu amonia, na e nwekwara ụdị mmebi mpaghara dị ka corrosion galvanic, pitting corrosion, na abrasion corrosion.Mwepu ọla kọpa, nkwekọrịta nke ọla kọpa aluminom, na denitrification nke cupronickel bụ ụdị pụrụ iche nke corrosion na alloys ọla kọpa.
N'oge mmekọrịta nke ọla kọpa alloys na ikuku na mmiri gburugburu, passive ma ọ bụ ọkara na-agafe agafe ihe nkiri nwere ike guzobe n'elu ọla kọpa alloys, nke na-egbochi dị iche iche corrosions.Ya mere, ọtụtụ ọla kọpa alloys na-egosi ọmarịcha nguzogide corrosion na gburugburu ikuku.
Ikuku corrosion nke ọla kọpa alloys ikuku corrosion nke metal ihe tumadi dabere na mmiri vepo na ikuku na mmiri film n'elu ihe.A na-akpọ iru mmiri dị n'ime ikuku mgbe ọnụ ọgụgụ corrosion nke ikuku igwe na-amalite ịba ụba nke ukwuu.Iru mmiri dị oke egwu nke ọla kọpa alloys na ọtụtụ ọla ndị ọzọ dị n'etiti 50% na 70%.Mmetọ nke ikuku na-enwe mmetụta dị ukwuu na nrụrụ nke ọla kọpa alloys.Ihe mmetọ acidic dị ka C02, SO2, NO2 na ikuku ụlọ ọrụ mepere emepe na-agbaze na fim mmiri na hydrolyzed, nke na-eme ka ihe nkiri mmiri ahụ dị acidified na ihe nkiri nchebe na-akwụsi ike.Mbibi nke osisi na ikuku ikuku nke ụlọ ọrụ na-emepụta na-eme ka amonia na hydrogen sulfide gas dị na mbara igwe.Amonia na-eme ka corrosion nke ọla kọpa na alloys ọla kọpa dịkwuo ngwa ngwa, ọkachasị nrụrụ aka.
Nhụta corrosion nke ọla kọpa na ọla kọpa na gburugburu corrosion ikuku dị iche iche dị nnọọ iche.A kọwo data corrosion na gburugburu ikuku mmiri, ụlọ ọrụ mmepụta ihe na ime obodo ruo afọ 16 ruo 20.Ọtụtụ alloys ọla kọpa na-emebi emebi n'otu n'otu, ọnụego corrosion bụ 0.1 ruo 2.5 μm/a.Ọnụego corrosion nke alloy ọla kọpa na ikuku ụlọ ọrụ siri ike yana ikuku mmiri nke ụlọ ọrụ mmepụta ihe bụ usoro dị elu karịa nke ikuku mmiri dị nro na ikuku ime obodo.Ikuku emeru emeru nwere ike ime ka nrụrụ aka nke nrụrụ bras dịkwuo elu.A na-arụ ọrụ iji buo amụma ma kewaa ọnụego corrosion nke ọla kọpa site na ikuku dị iche iche dabere na ihe gburugburu ebe obibi.