Me yasa karafa masu babban abun ciki na carbon ke karya cikin sauƙi? Kashi na 2

2022-06-28

Daga sakamakon gwajin polarization na ƙarfin lantarki mai ƙarfi, mafi girman abun cikin carbon na samfurin, mafi kusantar haɓakar ragi na cathodic (haɓakar samar da hydrogen) da halayen rushewar anodic a cikin yanayin acidic. Idan aka kwatanta da matrix ɗin da ke kewaye tare da ƙarancin ƙarancin iskar hydrogen, carbide yana aiki azaman cathode tare da ƙarar juzu'in ƙara.

Dangane da sakamakon gwajin shigar da sinadarin hydrogen na lantarki, mafi girman abun ciki na carbon da juzu'in juzu'in carbides a cikin samfurin, ƙarami mai saurin yaduwa na atom ɗin hydrogen kuma mafi girman solubility. Yayin da abun cikin carbon ya karu, juriya ga embrittlement hydrogen shima yana raguwa.

Gwajin juzu'i na jinkirin ya tabbatar da cewa mafi girman abin da ke cikin carbon, yana rage juriyar lalatawar damuwa. Daidaita da juzu'in juzu'in carbides, yayin da haɓakar haɓakar hydrogen da adadin hydrogen da aka allura a cikin samfurin ya karu, haɓakawar haɓakar anodic zai faru, kuma za a haɓaka samuwar yankin zamewar.


Lokacin da abun ciki na carbon ya karu, carbides za su yi hazo a cikin karfe. A karkashin aikin electrochemical lalata dauki, da yiwuwar hydrogen embrittlement zai karu. Domin tabbatar da cewa karfe yana da kyakkyawan juriya na lalata da juriya na haɓakar hydrogen, Hazowar carbide da sarrafa juzu'i masu ƙarfi sune hanyoyin sarrafawa masu inganci.

Aikace-aikacen ƙarfe a cikin sassa na motoci yana da wasu iyakancewa, kuma saboda raguwar raguwar juriya ga haɓakar hydrogen, wanda ke haifar da lalatawar ruwa. A haƙiƙa, wannan ƙaƙƙarfan rashin ƙarfi na hydrogen yana da alaƙa ta kusa da abun cikin carbon, tare da hazo na carbide baƙin ƙarfe (Fe2.4C/Fe3C) ƙarƙashin ƙarancin ƙarancin iskar hydrogen.

Gabaɗaya, don yanayin lalatawar da aka keɓance a saman wanda ya haifar da yanayin lalatawar damuwa ko yanayin ɓarnawar hydrogen, ana cire ragowar damuwa ta hanyar magani mai zafi kuma ana haɓaka ingancin tarkon hydrogen. Ba abu mai sauƙi ba ne don haɓaka ƙarfe mai ƙarfi mai ƙarfi tare da juriya mai kyau na lalata da juriya na haɓakar hydrogen.

Yayin da abun ciki na carbon ya karu, adadin raguwar hydrogen yana ƙaruwa, yayin da yawan yaduwar hydrogen ya ragu sosai. Makullin yin amfani da matsakaiciyar carbon ko babban ƙarfe na carbon azaman sassa ko igiyoyin watsawa shine don sarrafa kayan aikin carbide yadda yakamata a cikin microstructure.