Akọwapụtara ngafe dị ka nguzobe oyi akwa nchekwa dị gịrịgịrị n'elu ihe igwe n'okpuru ọnọdụ oxidizing, nke a na-enweta site na polarization anodic siri ike, iji gbochie corrosion.Ụfọdụ ọla ma ọ bụ alloys na-emepụta oyi akwa mgbochi dị mfe na ike ịgbalite ma ọ bụ n'okpuru polarization anodic na-adịghị ike, si otú a na-ebelata ọnụego corrosion.Dị ka nkọwa nke passivation, ọnọdụ a adịghị ada n'okpuru passivation.
Ọdịdị nke ihe nkiri passivation ahụ dị ezigbo mkpa, yana nha nha sitere na 1 ruo 10 nanometer.Nchọpụta hydrogen na ihe nkiri dị mkpa nke passivation na-egosi na ihe nkiri passivation nwere ike ịbụ hydroxide ma ọ bụ hydrate.Ígwè (Fe) siri ike ịmepụta ihe nkiri passivation n'okpuru ọnọdụ corrosion nkịtị;ọ na-eme naanị na gburugburu oxidizing nke ukwuu yana n'okpuru polarization anodic na ikike dị elu.N'ụzọ dị iche, chromium (Cr) nwere ike ịmepụta ihe nkiri ngafe siri ike, nke siri ike na nke na-echebe ọbụna na gburugburu oxidizing dị nwayọọ.N'ime alloys ígwè nwere chromium, mgbe ọdịnaya chromium karịrị 12%, a na-akpọ ya igwe anaghị agba nchara.Igwe anaghị agba nchara nwere ike idowe ọnọdụ na-agafe agafe n'ọtụtụ ngwọta mmiri nwere oke ikuku.Nickel (Ni), ma e jiri ya tụnyere ígwè, ọ bụghị nanị na ọ nwere ihe ndị ka mma n'ibu (gụnyere ike okpomọkụ) ma na-egosipụtakwa nguzogide corrosion dị mma na ma ndị na-abụghị oxidizing.
Nhazi nke Metal Passivation na ọkpụrụkpụ ihe nkiri Passivation
Akọwapụtara ngafe dị ka nguzobe oyi akwa nchekwa dị gịrịgịrị n'elu ihe igwe n'okpuru ọnọdụ oxidizing, nke a na-enweta site na polarization anodic siri ike, iji gbochie corrosion.Ụfọdụ ọla ma ọ bụ alloys na-emepụta oyi akwa mgbochi dị mfe na ike ịgbalite ma ọ bụ n'okpuru polarization anodic na-adịghị ike, si otú a na-ebelata ọnụego corrosion.Dị ka nkọwa nke passivation, ọnọdụ a adịghị ada n'okpuru passivation.
Ọdịdị nke ihe nkiri passivation ahụ dị ezigbo mkpa, yana nha nha sitere na 1 ruo 10 nanometer.Nchọpụta hydrogen na ihe nkiri dị mkpa nke passivation na-egosi na ihe nkiri passivation nwere ike ịbụ hydroxide ma ọ bụ hydrate.Ígwè (Fe) siri ike ịmepụta ihe nkiri passivation n'okpuru ọnọdụ corrosion nkịtị;ọ na-eme naanị na gburugburu oxidizing nke ukwuu yana n'okpuru polarization anodic na ikike dị elu.N'ụzọ dị iche, chromium (Cr) nwere ike ịmepụta ihe nkiri ngafe siri ike, nke siri ike na nke na-echebe ọbụna na gburugburu oxidizing dị nro.N'ime alloys ígwè nwere chromium, mgbe ọdịnaya chromium karịrị 12%, a na-akpọ ya igwe anaghị agba nchara.Igwe anaghị agba nchara nwere ike idowe ọnọdụ na-agafe agafe n'ọtụtụ ngwọta mmiri nwere oke ikuku.Nickel (Ni), ma e jiri ya tụnyere ígwè, ọ bụghị nanị na ọ nwere ihe eji arụ ọrụ ka mma (gụnyere ike okpomọkụ dị elu) kamakwa ọ na-egosipụtakwa nguzogide corrosion dị mma na ma ndị na-abụghị oxidizing na oxidizing gburugburu.Mgbe ọdịnaya nickel dị na ígwè karịrị 8%, ọ na-eme ka usoro cubic nke austenite guzosie ike, na-eme ka ikike ngafe dịkwuo elu ma na-eme ka nchebe corrosion dịkwuo mma.Ya mere, chromium na nickel bụ ihe dị mkpa na-eme ka ihe alloying dị na nchara na gburugburu oxidizing.Mgbe ọdịnaya nickel dị na ígwè karịrị 8%, ọ na-eme ka usoro cubic nke austenite guzosie ike, na-eme ka ikike ngafe dịkwuo elu ma na-eme ka nchebe corrosion dịkwuo mma.Ya mere, chromium na nickel bụ ihe dị mkpa na-eme ka ihe dị n'ime ígwè.
Oge nzipu: Jan-25-2024