Kila kohu 'ole

Ka wehewehe ʻana o ke kila kila

I loko o ka lewa a kemika corrosion medium hiki ke pale aku i ka corrosion o ke kila kila kiʻekiʻe, kuhiliʻole kila mea he nani ili a me ka corrosion maikaʻi kū'ē, 'aʻole pono e plated a me kekahi ili lapaʻau, a pāʻani i ka inherent ili waiwai o kuhiliʻole kila, hoʻohana 'ia ma nui nā ʻano o ke ʻano kila, ka mea maʻamau i kapa ʻia he kila kila.Ma ka inoa o ka hana o 13 chromium kila, 18- chromium - nickel kila a me nā kila kila kiʻekiʻe.
Mai ka metallographic manaʻo, no ka mea, kuhiliʻole kila i chromium a me ka ili o ka hookumu ana o ka loa lahilahi chromium kiʻiʻoniʻoni, ke kiʻi hoʻokaʻawale mai ka oxygen i loko o ke kila invasion o corrosion kū'ē.No ka mālama ʻana i ke kūpaʻa corrosion i loko o ke kila kila, pono e loaʻa i ke kila ʻoi aku ma mua o 12% chromium.

ʻO ka moʻolelo hoʻomohala o ke kila kila

ʻO ke kumu i hoʻohana nui ʻia ai nā mea hao a me nā mea kila ma muli o ka hoʻopaʻa ʻana o nā waihona o ka hao, ka nui o ka mālama ʻana, ka hoʻokele waiwai a me ka hoʻoheheʻe ʻana, a me ka ikaika deformation anu a me ka wela o ka hao a me ke kila.Loaʻa i nā huahana i hoʻopau ʻia nā waiwai mechanical maikaʻi loa (ikaika, plasticity a me ke kūpaʻa hopena) a me nā waiwai mīkini (ʻokiʻoki, welding, deformation anuanu, etc.).Akā i ka hoʻohālikelike ʻia me nā mea ʻakika silicic, nā mea synthetic polymer a me kekahi mau metala non-ferrous, ʻo kona hemahema nui loa: i ka lewa a i ʻole ka waika, alkali, paʻakai a me nā kūlana media ʻē aʻe, maʻalahi e lilo ke kaumaha ma muli o ka corrosion, a me ka luku piha.

ʻO nā ʻano ʻano kila kila

Hiki ke hoʻokaʻawale ʻia ke kila kila ma ka hoʻohana ʻana, ka haku mele a me ka hoʻolālā metallographic.
ʻO ke kila austenitic he 18% chromium -8% nickel, a ʻokoʻa ka nui o kēlā me kēia mea, i mea e hoʻomohala ai i nā ʻano kila like ʻole.
Hoʻokaʻawale ʻia e ka haku mele: ①Cr moʻo: ferrite moʻo, Martensite pūnaehana moʻo ②Cr-Ni moʻo: Austenite pūnaehana moʻo, ʻano ʻē aʻe, moʻo paʻakikī ua.
Hoʻokaʻawale ʻia o ka hale metala: (1) austenitic stainless steel, (2) ferritic stainless steel, (3) martensitic stainless steel, (4) duplex stainless steel, (5) precipitation hardening stainless steel