Akụkọ

Aluminom bụ ihe mgbakwasị ụkwụ na ọ na-aghọ oxidize ozugbo ọ batara na ikuku. Site n'echiche kemịkalụ, oyi akwa oxide kpụrụ na-akwụsi ike karịa aluminom n'onwe ya na nke a bụ isi ihe na-akpata nguzogide corrosion nke aluminom. Otú ọ dị, ịdị irè nke oyi akwa a nwekwara ike ibelata - site n'itinye ihe ndị dị na ya, dịka ọmụmaatụ. Nke a bụ ihe ị kwesịrị ịma.

Maka ngwa ebe ọdịdị anya adịghị oke egwu, oyi akwa oxide eke nwere ike inye nchebe corrosion zuru oke. Ma ọ bụrụ na a ga-ese ihe aluminom, jikọta, ma ọ bụ jiri ya mee ihe na gburugburu ebe obibi na-emebi emebi, ọgwụgwọ mbụ dị mkpa iji mepụta ebe kwụsiri ike na nke ọma. Ngwakọta nke aluminom oxide n'ígwé nwere ike ịdị iche iche, dabere na ọnọdụ nhazi, ihe ndị na-emepụta ihe na ihe ndị na-emerụ emerụ. Mgbe mmiri dị n'oge oxidation, mmiri kristal nwekwara ike ịdị na oyi akwa oxide. Nkwụsi ike nke oyi akwa oxide na-emetụta ihe mejupụtara ya.

Aluminom oxide na-akwụsikarị ike n'ime pH nke 4 ruo 9. N'èzí nke a, ihe ize ndụ nke corrosion dị elu. N'ihi ya, ma acidic na alkaline ngwọta nwere ike iji etch aluminum elu n'oge tupu ọgwụgwọ.

Alloying ihe na-emetụta corrosion

E wezụga ihe nchebe nke oyi akwa oxide, a na-ekpebi nguzogide corrosion nke aluminom alloys site na ọnụnọ nke ihe ndị dị mma intermetallic. N'ihu ihe ngwọta nke electrolyte, dị ka mmiri ma ọ bụ nnu, corrosion nwere ike ime, na ihe ndị dị mma na-eme ihe dị ka cathodes na ebe ndị gbara ya gburugburu na-aghọ anodes ebe aluminom na-agbaze.

Ọbụna ụmụ irighiri ihe ndị nwere obere ihe ndị dị mma nwere ike igosi ọkwa dị elu n'ihi nhọrọ mgbasa nke aluminom na elu ha. Ihe ndị nwere ígwè na-ebelata nke ukwuu nguzogide corrosion, ebe ọla kọpa na-ebelatakwa nguzogide corrosion. Ọnụnọ dị elu nke adịghị ọcha, dị ka ndu, na oke ọka na-emetụtakwa nguzogide corrosion na-adịghị mma.

Nguzogide corrosion na 5000 na 6000 usoro aluminum alloys

Aluminom alloys si na 5000 na 6000 usoro n'ozuzu nwere obere etoju nke alloying ọcha na intermetallic ahụ, na-akpata dịtụ elu corrosion iguzogide. Alloys usoro 2000 siri ike dị elu, nke a na-ejikarị eme ihe na ụlọ ọrụ ụgbọ elu, na-enwekarị ihe mkpuchi nke aluminom dị ọcha iji gbochie corrosion.

Alloy ndị megharịrị emegharị na-enwekarị ụbara ọkwa nke ihe ndị na-achọpụta ihe, na-eme ka ha nwee ike ịdaba na corrosion. Otú ọ dị, mgbanwe dị na nguzogide corrosion dị n'etiti alloys dị iche iche, na ọbụna n'ime otu alloy, n'ihi usoro mmepụta na ọgwụgwọ okpomọkụ, nwere ike ịdị ukwuu karịa nke ihe ndị na-achọpụta ihe kpatara ya.

Ya mere, ọ dị mkpa ka ịchọọ ọmụma nka nka n'aka onye na-ebubata gị, ọkachasị ma ọ bụrụ na nguzogide corrosion dị mkpa maka ngwaahịa gị. Aluminom abụghị ihe ejikọtara ọnụ, yana ịghọta ihe ụfọdụ dị mkpa na ịhọrọ ngwaahịa aluminom kwesịrị ekwesị maka mkpa gị.

nweere onwe gịkpọtụrụ anyịọ bụrụ na ị chọrọ ịmatakwu.