Alloy na-eguzogide corrosion

Ihe onyonyo egosipụtara na-eguzogide ihe mgbochi corrosion

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Alloy na-eguzogide corrosion

Ihe ndị bụ isi alloying bụ ọla kọpa, chromium na molybdenum. Ọ nwere ezigbo ihe zuru oke ma na-eguzogide ọgwụ corrosion acid dị iche iche na corrosion nrụgide. Ngwa mbụ (emepụtara na United States na 1905) bụ nickel-copper (Ni-Cu) alloy, nke a makwaara dị ka Monel alloy (Monel alloy Ni 70 Cu30); na mgbakwunye, nickel-chromium (Ni-Cr) alloy (ya bụ, nickel dabeere okpomọkụ na-eguzogide alloy), okpomọkụ na-eguzogide corrosion na-eguzogide alloys na corrosion-eguzogide alloys), nickel-molybdenum (Ni-Mo) alloys (tumadi). na-ezo aka na usoro Hastelloy B), nickel-chromium-molybdenum (Ni-Cr-Mo) alloys (na-ezo aka na usoro Hastelloy C), wdg.

N'otu oge ahụ, nickel dị ọcha bụkwa ihe nnọchianya nke alloys na-eguzogide corrosion dabere na nickel. Alloys ndị a na-eguzogide corrosion na-eguzogide nickel bụ nke a na-ejikarị eme ihe maka ebe dị iche iche na-eguzogide corrosion dị ka mmanụ ala, kemịkalụ, na ọkụ eletrik.

Alloys na-eguzogide corrosion dabere na nickel na-enwekarị usoro austenite. N'ọnọdụ nke ngwọta siri ike na ọgwụgwọ ịka nká, enwekwara usoro intermetallic na metal carbonitrides na matrix austenite na oke ọka nke alloy. A na-ekewa alloys dị iche iche na-eguzogide corrosion dị ka ihe mejupụtara ya si dị na njirimara ha bụ ndị a:

Nguzogide corrosion nke Ni-Cu alloy dị mma karịa nke nickel na ibelata ọkara, na nguzogide corrosion ya dị mma karịa nke ọla kọpa na usoro oxidizing. Ihe kacha mma maka acid (lee Metal Corrosion).

Ni-Cr alloy bụkwa ihe nickel nke na-eguzogide okpomọkụ; A na-ejikarị ya eme ihe na ọnọdụ oxidizing. Ọ na-eguzogide oke okpomọkụ oxidation na corrosion nke gas nwere sọlfọ na vanadium, na nguzogide corrosion ya na-abawanye na mmụba nke ọdịnaya chromium. Alloys ndị a nwekwara ezigbo nguzogide hydroxide (dị ka NaOH, KOH) corrosion na nrụgide corrosion nguzogide.

A na-ejikarị Ni-Mo alloys eme ihe n'okpuru ọnọdụ nke ibelata corrosion ọkara. Ọ bụ otu n'ime alloys kachasị mma maka iguzogide corrosion na hydrochloric acid, mana na ọnụnọ oxygen na oxidants, nguzogide corrosion na-ebelata nke ukwuu.

Alloy Ni-Cr-Mo(W) nwere njirimara nke Alloy Ni-Cr a kpọtụrụ aha n'elu yana Ni-Mo alloy. A na-ejikarị ya n'okpuru ọnọdụ oxidation-mbelata ngwakọta agwakọta. Alloys ndị dị otú ahụ nwere ezigbo nguzogide corrosion na elu okpomọkụ hydrogen fluoride, na hydrochloric acid na hydrofluoric acid ngwọta nwere oxygen na oxidants, na mmiri chlorine gas na ime ụlọ okpomọkụ. Ni-Cr-Mo-Cu alloy nwere ikike iguzogide ma nitric acid na sulfuric acid corrosion, ma nweekwa ezigbo nguzogide corrosion na ụfọdụ acids agwakọta oxidative.