Pehea ka corrosive 904L pā kila kuhiliʻole?

904L pā kila kilaHe ʻano ʻano kila ʻiliahi austenitic me ka haʻahaʻa haʻahaʻa haʻahaʻa a me ka alloying kiʻekiʻe i hoʻolālā ʻia no nā kaiapuni me nā kūlana corrosive paʻakikī.He ʻoi aku ka maikaʻi o ka corrosion ma mua o316La317L, ʻoiai e noʻonoʻo ana i ke kumukūʻai, ka hana, a me ka maikaʻi.kiekie.Ma muli o ka hoʻohui ʻana o 1.5% copper, he kūpaʻa maikaʻi ka corrosion e kūʻē i ka hoʻohaʻahaʻa ʻana i nā waikawa e like me ka sulfuric acid a me ka phosphoric acid.Loaʻa iā ia ke kūpaʻa ʻino maikaʻi loa e kūʻē i ke koʻikoʻi corrosion pitting a me ka corrosion crevice i hoʻokumu ʻia e nā ions chloride, a maikaʻi ke kūʻē i ka intergranular corrosion.I loko o ka sulfuric acid maʻemaʻe i loko o ka pae hoʻopaʻa ʻana o 0-98%, hiki ke kiʻekiʻe ka mahana lawelawe o 904L pā kila kila e like me 40 degere Celsius.I loko o ka phosphoric acid maʻemaʻe i loko o ka pae hoʻopaʻa ʻana o 0-85%, maikaʻi loa kona kūpaʻa corrosion.I loko o ka ʻenehana phosphoric acid i hana ʻia e nā kaʻina wai, he hopena koʻikoʻi nā haumia i ka pale ʻana i ka corrosion.Ma waena o nā ʻano phosphoric acid, 904L super austenitic stainless steel i ʻoi aku ka maikaʻi o ka corrosion ma mua o ke kila kila maʻamau.I loko o nā ʻakika oxidizing ikaika, ʻo 904L ke kila kila he haʻahaʻa haʻahaʻa haʻahaʻa ka pale ʻana i ka corrosion ma mua o nā ʻano kila i hoʻohui ʻia.i loko o kēia pae koʻikoʻi.ʻOi aku ka maikaʻi o ka pale ʻana o ke kila 904L ma mua o ke kila kila maʻamau.904L kila kuhiliʻole kiʻekiʻe kū'ē i ka pitting corrosion.ʻO kona kūpaʻa ʻana i ka crevice corrosion i loko o nā hāʻina chloride.Maikaʻi nō hoʻi ka ikaika.ʻO ka maʻiʻo nickel kiʻekiʻe o904L pā kilae hoemi ana i ka poino ma na lua a me na hili.Ma muli o kona kiʻekiʻe nickel maʻiʻo, 904L he kiʻekiʻe ke kū'ē i ke koʻikoʻi i ka pohā ʻana i ka ʻino i loko o ka nitride solutions, concentrated hydroxide solutions a me ka hydrogen sulfide-rich environment.