Official Answer
Answer
Black oxide (kowane MIL-DTL-13924) shafi ne na juyawa wanda baya canza girman zobe (na al'ada gini $ <0.0001$ inci). Wannan shine manufa don ingantattun zoben karkace masu tsayi tare da juriya akan $t$ da $b$. Koyaya, baƙin ƙarfe oxide yana ba da ƙarancin juriya na lalata (mahimmanci kawai hana tsatsa yayin ajiya) kuma dole ne a ƙara shi da mai mai hana tsatsa. Ba kamar zinc plating ba, ba ya ɗaukar haɗarin haɓakar hydrogen. Don watsawa na mota, abubuwan da ke riƙe da man fetur na ƙarewar baki oxide suna da amfani ga zamewar lamba yayin haɗuwa da aiki.
