Manoanoa o ka uhi pena

Mai kahi microscopic o ka nānā ʻana, nui nā pinholes i loko o ka uhi, a ua lawa ka nui o nā pinholes e ʻae i nā media corrosive o waho (wai, oxygen, chloride ions, etc.) e komo i loko o ka substrate, a ma lalo o kekahi. haʻahaʻa haʻahaʻa, loaʻa kahi ʻano ʻino filamentous.ʻOi aku ka mānoanoa o ka uhi ʻana, ʻoi aku ka liʻiliʻi o nā pinhole, a ʻoi aku ka maikaʻi o ka pale ʻana i ka corrosion o ka substrate.E like me ka mea i hōʻike ʻia ma ke kiʻi, pili nā mānoanoa uhi ʻokoʻa i ka pale ʻana i ka corrosion.Hōʻike nā hopena hōʻike inā ʻoi aku ka mānoanoa o ka uhi ʻana ma luna o 20μm, ʻoi aku ka paʻa o ka hopena o ka corrosion.

 

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Palekana uhi:

Hoʻopili ka maikaʻi o ka uhi ʻana a me ka hana ʻana i ke kūpaʻa corrosion hope o nā huahana uhi kala.Inā hana ʻia ke kukui me ka papa ʻaʻa ʻōwili (ʻaʻole me ka plating) pololei i MCL, ma muli o nā huahana corrosion o ka hao wehe maʻalahi absorption o ka makū, a ʻaʻohe pale lua, no laila ka wikiwiki o ka corrosion, inā he mānoanoa o ka zinc galvanized. (aluminum plating zinc/aluminum magnesium) substrate, hiki iā ia ke pāʻani i ke kuleana o "firewall", e hoʻomaikaʻi nui i ka pale ʻana o nā huahana.


Ka manawa hoʻouna: Iune-10-2022