Passiveisation inotsanangurwa seyekuumbwa kweiyo yakaonda kwazvo inodzivirira pamusoro pezvinhu zvesimbi pasi pemamiriro ehusiku, akawanikwa neakasimba echidhori polarization, kuti inhibit kuronga. Mamwe mitezo kana alloys anovandudza iyo yakapfava inhibiting denderedzwa pane iyo activation inogona kana pasi pemunhu ane simba anodhori, nekudaro achideredza huwandu hwekukanganisa. Zvinoenderana netsanangudzo yekusafunga, iyi mamiriro haawire pasi pepfungwa.
Chimiro cheiyo firimu rePassivation rakatetepa zvakanyanya, ine chiyero chakakora kubva ku1 kusvika kugumi nanometers. Kuonekwa kwehydrogen mune iyo Passivation yakatetepa firimu inoratidza kuti firimu rePassivation rinogona kunge riri hydroxide kana hydrate. Iron (fe) yakaoma kuumba firimu rinopfuura riri pasi pezvakajairwa mamiriro; Izvo zvinongoitika muzvikamu zvikuru zvemhando dzehusiku uye pasi peanonyic polarization kune yakanyanya kukosha. Mukupesana, chromium (cr) inogona kuumba yakanyanya kugadzikana, dense, uye inodzivirira firimu nguva yekudzivirira kunyange mune zvinyoro-nyoro oxidizing nharaunda. Muzvakavakirwa neSimbi Simbi isina tsvina inogona kuchengetedza iyo inopfuura inotaurwa mumamiriro ezvinhu mazhinji kune mhinduro dzine trace huwandu hwemhepo. Nickel (ni), kana ichienzaniswa nesimbi, kwete chete mune zvimedu zvemakaniki (kusanganisira simba rakanyanya-tembiricha) asi zvakare kuratidzira zvakanakisa kurwisa kune vese vasiri-oxidizing
Kuumbwa kwesimbi kupatsanurwa uye ukobvu hwefirimu rePassivation
Passiveisation inotsanangurwa seyekuumbwa kweiyo yakaonda kwazvo inodzivirira pamusoro pezvinhu zvesimbi pasi pemamiriro ehusiku, akawanikwa neakasimba echidhori polarization, kuti inhibit kuronga. Mamwe mitezo kana alloys anovandudza iyo yakapfava inhibiting denderedzwa pane iyo activation inogona kana pasi pemunhu ane simba anodhori, nekudaro achideredza huwandu hwekukanganisa. Zvinoenderana netsanangudzo yekusafunga, iyi mamiriro haawire pasi pepfungwa.
Chimiro cheiyo firimu rePassivation rakatetepa zvakanyanya, ine chiyero chakakora kubva ku1 kusvika kugumi nanometers. Kuonekwa kwehydrogen mune iyo Passivation yakatetepa firimu inoratidza kuti firimu rePassivation rinogona kunge riri hydroxide kana hydrate. Iron (fe) yakaoma kuumba firimu rinopfuura riri pasi pezvakajairwa mamiriro; Izvo zvinongoitika muzvikamu zvikuru zvemhando dzehusiku uye pasi peanonyic polarization kune yakanyanya kukosha. Mukupesana, chromium (cr) inogona kuumba yakanyanya kugadzikana, dense, uye inodzivirira firimu nguva yekudzivirira kunyange mune zvinyoro-nyoro oxidizing nharaunda. Muzvakavakirwa neSimbi Simbi isina tsvina inogona kuchengetedza iyo inopfuura inotaurwa mumamiriro ezvinhu mazhinji kune mhinduro dzine trace huwandu hwemhepo. Nickel (ni), kana ichienzaniswa needare, isingangove nemakwenzi ari nani (kusanganisira simba rekushisa) asi zvakare kuratidzira zvakanakisa kurwisa kudzikisira mune zvese zvisiri-oxidizing uye oxidizing nharaunda. Kana iyo Nickel izere muSimbi inodarika 8%, inosimbisa chimiro chechiso cheCubic cubic chimiro cheAustenite, kuenderera mberi nekuwedzera kugona kwekuwedzera uye kugadzirisa kudzivirirwa kwecorosion. Naizvozvo, Chromium naNickel vakakosha nzira yekufungidzira zviri muStel.uye oxidizing nharaunda. Kana iyo Nickel izere muSimbi inodarika 8%, inosimbisa chimiro chechiso cheCubic cubic chimiro cheAustenite, kuenderera mberi nekuwedzera kugona kwekuwedzera uye kugadzirisa kudzivirirwa kwecorosion. Naizvozvo, Chromium naNickel vanokanganisika zvinhu zviri musimbe.
Kutumira Nguva: Jan-25-2024