I ka wā o ka lawelawe ʻana, ka hui ʻana, ka hoʻopaʻa ʻana, ka nānā ʻana i ka hili ʻana, a me ka hana ʻana i nā papa liner i loko, nā lako, a me nā mea pono o nā pahu kila kila, nā mea ʻino like ʻole e like me ka ʻaila hinu, nā ʻōpala, ka ʻōpala, nā haumia, nā mea hoʻoheheʻe haʻahaʻa. , hoʻokomo ʻia ka pena, ka palapa a me ka splatter.Hoʻopilikia kēia mau mea i ka maikaʻi o ka ili o ke kila kila, hoʻopōʻino i kāna kiʻiʻoniʻoni passivation, hoʻemi i ka pale ʻana o ka corrosion, a hiki ke maʻalahi i ka media corrosive i nā huahana kemika i lawe ʻia ma hope, e alakaʻi ana i ka pitting, intergranular corrosion, a me ke koʻikoʻi corrosion māwae.
ʻO nā pahu kila kila, ma muli o ka lawe ʻana i nā ʻano kemika, loaʻa nā koi kiʻekiʻe no ka pale ʻana i ka palaka ukana.Ma muli o ka maikaʻi ʻole o ka maikaʻi o ka ʻili o nā papa kila kuhili ʻole i hana ʻia ma ka home, he hana maʻamau ka hana ʻana i ka mīkini, kemika, a i ʻole.hoʻopololei electrolyticma nā papa kila kila, nā mea hana, a me nā mea pono ma mua o ka hoʻomaʻemaʻe ʻana, pickling, a me ka passivating e hoʻoikaika i ka pale ʻana o ke kila kila.
ʻO ka kiʻiʻoniʻoni passivation ma ke kila kila he mau hiʻohiʻona ikaika a ʻaʻole pono e noʻonoʻo ʻia he hoʻopau piha i ka corrosion akā ʻo ke kūkulu ʻana i kahi papa pale diffusing.Hiki iā ia ke hoʻopōʻino i mua o nā mea hoʻohaʻahaʻa (e like me nā ion chloride) a hiki ke pale a hoʻoponopono i ke alo o nā oxidants (e like me ka ea).
Ke ʻike ʻia ke kila kila i ka ea, hana ʻia kahi kiʻiʻoniʻoni oxide.
Eia naʻe, ʻaʻole lawa nā mea pale o kēia kiʻiʻoniʻoni.Ma o ka waikawa pickling, he awelika mānoanoa o 10μm o kaili kila kuhiliʻoleua ʻino ʻia, a ʻoi aku ka kiʻekiʻe o ka hoʻoheheʻe ʻana ma nā wahi hemahema ma mua o nā wahi ʻē aʻe.No laila, ʻo ka pickling e hana i ka ʻili holoʻokoʻa i kahi kaulike kaulike.ʻO ka mea nui, ma o ka pickling a me ka passivation, e hoʻoheheʻe ʻia ka hao a me kāna mau oxides i hoʻohālikelike ʻia me ka chromium a me kāna mau oxides, e wehe ana i ka papa chromium-depleted a hoʻonui i ka ʻili me ka chromium.Ma lalo o ka hana passivating o oxidants, ua hoʻokumu ʻia kahi kiʻiʻoniʻoni passivation piha a paʻa, me ka hiki o kēia kiʻi passivation waiwai chromium a hiki i + 1.0V (SCE), kokoke i ka hiki o nā metala hanohano, e hoʻonui ai i ke kūpaʻa kūpaʻa corrosion.
Ka manawa hoʻouna: Nov-28-2023