Nkọwa nke igwe anaghị agba nchara
Na ikuku ma ọ bụ chemical corrosion ọkara nwere ike iguzogide corrosion nke a elu alloy ígwè, igwe anaghị agba nchara bụ a mara mma elu na ezi corrosion eguzogide, adịghị ga-plated na ndị ọzọ n'elu ọgwụgwọ, na-egwu pụta ụwa Njirimara nke igwe anaghị agba nchara, eji na. ọtụtụ akụkụ nke ụdị nchara, nke a na-akpọkarị igwe anaghị agba nchara.N'aha arụmọrụ nke 13 chromium ígwè, 18- chromium - nickel ígwè na ndị ọzọ elu alloy ígwè.
Site metallographic si ele ihe anya, n'ihi na igwe anaghị agba nchara nwere chromium na n'elu nke e guzobere a nnọọ mkpa chromium film, ihe nkiri kewapụrụ na oxygen na ígwè mbuso agha nke corrosion iguzogide.Iji nọgide na-enwe nguzogide corrosion dị na igwe anaghị agba nchara, ígwè ga-enwerịrị ihe karịrị 12% chromium.
Akụkọ mmepe nke igwe anaghị agba nchara
Ihe mere eji eji ígwè na ígwè eme ihe n'ọtụtụ ebe bụ n'ihi ntinye nke nkwụnye ígwè ígwè, nnukwu nchekwa, ngwungwu akụ na ụba na mgbaze, na ike oyi na-ekpo ọkụ na-ekpo ọkụ nke ígwè na ígwè emechara.Ngwaahịa ndị a gwụchara nwere ihe ndị dị mma na-arụ ọrụ (ike, plasticity na mmetụta nkwụsị) na ihe eji eme ihe (ịcha, ịgbado ọkụ, nrụrụ oyi, wdg).Ma tụnyere silicic acid ihe, polymer sịntetik ihe na ụfọdụ ndị na-abụghị ferrous ọla, ya nnukwu mwepu bụ: na ikuku ma ọ bụ acid, alkali, nnu na ndị ọzọ na mgbasa ozi ọnọdụ, mfe ifelata n'ihi corrosion, na ọbụna zuru ezu mbibi.
Ụdị igwe anaghị agba nchara
Enwere ike ịhazi igwe anaghị agba nchara site na iji, ihe mejupụtara kemịkalụ na nhazi metallographic.
Austenitic ígwè bụ nke 18% chromium -8% nickel, na ego nke ọ bụla mmewere dị iche iche, nke mere na-mepụta dị iche iche nke ígwè.
Nhazi site na ihe mejupụtara kemịkalụ: ①Cr Usoro: usoro ferrite, usoro usoro Martensite ② Usoro usoro Cr-Ni: Usoro sistemụ Austenite, usoro ihe na-adịghị mma, usoro mmiri ozuzo siri ike.
Nkewa nke metallographic Ọdịdị: (1) austenitic igwe anaghị agba nchara, (2) ferritic igwe anaghị agba nchara, (3) martensitic igwe anaghị agba nchara, (4) duplex igwe anaghị agba nchara, (5) mmiri ozuzo hardening igwe anaghị agba nchara.
Oge nzipu: Jan-10-2022