ʻO Aluminum ka lua o ka metala nui loa ma ka honua, a ma muli o kona mau waiwai maikaʻi, ʻo ia kekahi o nā metala i hoʻohana nui ʻia i kēia lā. No laila, he mea pono e hoʻomaopopo i nā kūlana e pōkole ai ke ola o kēia mau metala.

ʻO ka ʻino o kekahi metala e hoʻopilikia nui i kona ikaika hana, a ma nā hihia koʻikoʻi e alakaʻi i ka pōʻino o ke kūkulu ʻana, e like me nā māwae, nā haʻihaʻi hapa a me ka pau ʻole o ka waiwai.

He aha ka alumini corrosion? ʻO ka hoʻoheheʻe alumini e pili ana i ka hoʻoheheʻe mālie ʻana o nā molekala alumini i loko o nā oxides, a laila e hōʻemi ana i kāna mau waiwai kino a me ke kemika. ʻO ke kumu, ʻo ka alumini he metala ikaika, akā he metala passive nō hoʻi.

ʻO ke ʻano o ka ʻinoʻino alumini
ʻO ka ʻinoʻino o ka lewa
ʻO ke ʻano maʻamau o ka alumini corrosion. Hiki i ka ʻike ʻana o ka alumini i nā mea kūlohelohe ke kumu i ka ʻino o ka lewa. No ka mea hiki ke hana ʻia ma ka hapa nui o nā wahi, ʻo ka corrosion atmospheric ka hapa nui loa o ka nui o ka pōʻino i ka alumini i hoʻokumu ʻia e nā ʻano ʻino āpau o ka honua.

ʻAha uila
ʻO Galvanic corrosion, ʻike ʻia hoʻi ʻo ka corrosion metala ʻokoʻa, pili i ka alumini ma ke kino a i ʻole ma o nā electrolytes i pili i nā metala makamae. ʻO ka metala hanohano paha kekahi metala me ka haʻahaʻa haʻahaʻa ma mua o ka alumini.

Pitting
ʻO ka pitting corrosion ka mea ʻino o ka ʻili o ka metala alumini, kahi i hōʻike ʻia e nā lua liʻiliʻi (lua) ma ka ʻili. ʻO ka maʻamau, ʻaʻole pili kēia mau dimples i ka ikaika o ka huahana. Akā, he pilikia aesthetic kēia, akā inā koʻikoʻi ka helehelena o ka ʻili, hiki ke alakaʻi i ka hāʻule.

ʻAi ʻāʻī
ʻO ka corrosion Crevice kahi ʻano o ke kaʻina hana corrosion kūloko i nā mea. ʻO ka hoʻopili ʻana i nā mea hana a i ʻole nā ​​​​hewa hoʻolālā i hiki ke alakaʻi i ka hoʻokumu ʻana o nā āpau. ʻO ka hopena, ʻo ka hōʻiliʻili ʻana i ka wai kai i loko o kēia mau ʻeke hiki ke hoʻoheheʻe ʻia.

Exfoliation corrosion
He ʻano kūikawā ka corrosion intergranular i nā alumini alumini, me kahi ʻano kuhikuhi kuhikuhi. ʻIke ʻia kēia i nā huahana alumini i loaʻa i ka ʻōwili wela a i ʻole ka ʻōwili anu.