ʻO ke ʻano o kā mākou pale ʻana i ka ʻeleʻele ma luna o ka pā hao kila i hoʻonui ʻia e like me kēia:
1. Hoʻololi i ke ʻano o loko o ka metala
No ka laʻana, ka hana ʻana i nā ʻāpana pale ʻino, e like me ka hoʻohui ʻana i ka chromium, nickel, etc.
2. Keʻano papa pale
ʻO ka uhi ʻana i ka ʻili metala me kahi papa pale e hoʻokaʻawale i ka huahana metala mai ke ʻano corrosive a puni e pale i ka ʻino.
（1）. E uhi i ka ʻili o ke kila kila me ka ʻaila ʻenekini, ka petroleum jelly, pena a uhi ʻia paha me nā mea metala ʻole kū i ka corrosion e like me ka enamel a me ka plastic.
（2）. E hoʻohana i ka electroplating, wela wela, spray plating a me nā ʻano hana ʻē aʻe e uhi ai i ka ʻili o ka pā kila me kahi ʻāpana metala ʻaʻole hiki ke ʻino ʻia, e like me ka zinc, tin, chromium, nickel, etc.
（3）. E hoʻohana i nā ʻano kemika e hana i kahi kiʻiʻoniʻoni oxide maikaʻi a paʻa ma ka ʻili kila. No ka laʻana, hoʻokumu ʻia kahi kiʻiʻoniʻoni ferric oxide ʻeleʻele maikaʻi ma ka ʻili o ka pā kila.
3. Keʻano palekana electrochemical
Ke hoʻohana nei ke ʻano pale electrochemical i ka loina o nā cell galvanic e pale i nā metala a hoʻāʻo e hoʻopau i nā hopena cell galvanic e kumu ai ka galvanic corrosion. Hoʻokaʻawale ʻia nā ʻano hana pale electrochemical i ʻelua mau ʻāpana: pale anode a me ka pale cathodic. ʻO ke ala i hoʻohana nui ʻia ʻo ka pale cathodic.
4. E mālama i ka media corrosive
Hoʻopau i nā mea ʻino, e like me ka holoi pinepine ʻana i nā mea metala, kau ʻana i nā desiccants i loko o nā mea kani pololei, a me ka hoʻohui ʻana i kahi mea hoʻokaʻawale liʻiliʻi e hiki ke hoʻolohi i ka piʻi ʻana o ka corrosive i ka media corrosive.
5. Palekana electrochemical
1. ʻO ke ala palekana anode mōhai: Hoʻopili kēia ʻano metala ikaika (e like me ka zinc a i ʻole zinc alloy) i ka metala e pale ʻia. Ke hiki mai ka galvanic corrosion, hana kēia metala ikaika ma ke ʻano he electrode maikaʻi ʻole e loaʻa i ka hopena oxidation, a laila e hōʻemi a pale ʻole i ka Corrosion o ka metala pale. Hoʻohana pinepine ʻia kēia ʻano no ka pale ʻana i nā puʻu kila a me nā pūpū o nā moku holo moana i ka wai, e like me ka pale ʻana i nā ʻīpuka kila i ka wai. Hoʻopili pinepine ʻia kekahi mau ʻāpana zinc ma lalo o ka laina wai o ka pūpū o ka moku a i ʻole ma ka hoeu ma kahi kokoke i ka propeller e pale ai i ka hull, etc.
2. Ke ala hoʻomalu i kēia manawa: Hoʻohui i ka metala e pale ʻia i ka pou ʻino o ka lako mana, a koho i kahi ʻāpana o nā mea inert conductive e hoʻopili ai i ka pou maikaʻi o ka lako mana. Ma hope o ka hoʻoulu ʻana, hiki mai ka hōʻiliʻili ʻana o nā uku maikaʻi ʻole (electrons) ma luna o ka ʻili metala, no laila ke kāohi nei i ka metala mai ka nalowale ʻana o nā electrons a hoʻokō i ke kumu o ka pale. Hoʻohana nui ʻia kēia ʻano no ka pale ʻana i ka corrosion o nā mea metala ma ka lepo, ke kai a me ka wai kahawai. ʻO kekahi ala ʻē aʻe o ka pale electrochemical i kapa ʻia ʻo ka palekana anode, ʻo ia ke kaʻina hana e hoʻoheheʻe ʻia ai ka anode i loko o kahi pae kūpono ma o ka hoʻohana ʻana i ka volta waho. Hiki iā ia ke pale pono a pale paha i nā mea metala mai ka ʻino ʻana i nā waikawa, nā alkali a me nā paʻakai.
Ka manawa hoʻouna: Feb-22-2024