Bakin karfe ba don tsatsa ba ne, amma ba sauƙin tsatsa ba. A karkashin wasu yanayi, bakin karfe shima zai yi tsatsa. The surface na bakin karfe yana da sosai bakin ciki, bakin ciki da kuma barga chromium arziki oxide film, bakin karfe tsatsa, ta wannan oxide fim don hana oxygen atom infiltration hadawan abu da iskar shaka dauki da tsatsa. A gaskiya ma, wasu bakin karfe suna da juriya na tsatsa da juriya na acid (juriya na lalata). Tsatsa da juriya na bakin karfe yana faruwa ne saboda samuwar fim ɗin oxide mai arzikin chromium (fim ɗin wucewa) a samansa, wanda ke ware ƙarfe daga matsakaicin waje, yana hana ƙarfe daga lalacewa, kuma yana da ikon yin lalata. gyara kanta. Idan ya lalace, chromium a cikin karfe zai sake farfado da fim din wucewa tare da oxygen a cikin matsakaici kuma ya ci gaba da taka rawar kariya. Lokacin da fim ɗin oxide ya lalace, yana yin tsatsa cikin sauƙi.
1) Yanayin bakin karfe yana da ɗanɗano, a cikin yanayin ruwa da oxygen, samuwar kwayoyin acid da lalacewa ta hanyar lalacewa na bakin karfe.
2) Bakin karfe kayayyakin sun lalace ta hanyar kayan aikin shigarwa sannan kuma lalata fim ɗin kariya na saman. Misali, lokacin da aka shigar da bakin karfe a cikin injiniyan bangon labule na waje, mashin ɗin yana haifar da lahani na inji a wurin da shugaban kusoshi ke hulɗa. Bayan wankewar ruwan sama, shugaban ƙusoshin bakin karfe zai bayyana ɗan tsatsa mai iyo.
3) Akwai ƙura ko ƙura a saman bakin karfe, wanda ke da sauƙin amsawa ta hanyar electrochemical tare da bakin karfe a cikin iska mai laushi don hanzarta lalata bakin karfe.
4) Bakin karfe surface fallasa zuwa acid, alkali, gishiri da sauran abubuwa ne m ga sinadaran dauki lalata. Misali, labulen haɗin bangon labulen gabaɗaya a cikin biranen bakin teku ana zaɓin samfuran bakin karfe 316 (mafi jure lalata fiye da 304 bakin karfe), saboda yawan gishirin da ke cikin iskar biranen bakin teku yana da sauƙin haifar da lalata ga bakin karfe.
Sabili da haka, don yin samfurori na bakin karfe su kasance masu haske kuma ba su lalata ba, wajibi ne a zabi kayan da ya dace na samfurori na bakin karfe, wanda ya biyo baya shine tsaftacewa da kuma kula da samfurori na bakin karfe, cire datti na sama don kauce wa amsawa da lalata.
Lokacin aikawa: Agusta-19-2022