Rawaya mai launin Chrome, wanda aka fi sani da gubar chromate (PbCrO₄), wani launi ne mai haske da haske wanda aka yi bikinsa a tarihi saboda launinsa mai ƙarfi. An fara haɗa shi a shekarar 1809 ta masanin kimiyyar sinadarai ɗan Faransa Louis Nicolas Vauquelin, kuma ya sami karbuwa cikin sauri a matsayin madadin launukan rawaya na gargajiya kamar orpiment. Sunan launin ya samo asali ne daga chromium, wani sinadari da aka gano a lokacin gwaje-gwajen Vauquelin akan crocoite na ma'adinai, tushen sinadarin gubar na halitta.
Samar da rawayar chrome ya ƙunshi tsarin hazo na sinadarai. Gishirin gubar yana amsawa da mahaɗan chromate ko dichromate a cikin ruwan da ke cikinsa, yana samar da ƙananan ƙwayoyin gubar chromate. Ta hanyar daidaita yanayin amsawar, masana'antun za su iya samar da launuka daban-daban, tun daga rawayar primrose mai haske zuwa lemu mai zurfi. Ƙananan girman ƙwayoyin cuta suna samar da launuka masu haske, yayin da manyan ƙwayoyin cuta ke haifar da launuka masu duhu. Don haɓaka kwanciyar hankali da aiki, ana amfani da maganin saman, wanda ke kare launin daga lalacewar muhalli.
Lokacin Saƙo: Yuni-13-2025