Official Answer
Answer
Black oxide (MIL-DTL-13924) shafi ne na juyawa wanda ke ba da juriya kaɗan na lalata (mafi yawa don kayan ado da riƙewar mai) amma baya canza girman zobe ko gabatar da haɓakar hydrogen. Zinc plating (ASTM B633) yana ba da ingantaccen kariya ta lalata ta hanyar halayen anode na hadaya. Koyaya, plating na zinc yana ɗaukar babban haɗarin haɓakar hydrogen kuma yana ƙara kauri ($ 0.0002$ zuwa $ 0.0005$ inci), wanda zai iya tsoma baki tare da dacewa a cikin madaidaicin tsagi. Bugu da ƙari kuma, yin gyare-gyaren zinc na iya 'lashe' a ƙarƙashin matsanancin matsananciyar murɗawa da shigar da zoben karkace. Don aikace-aikacen gajiya mai yawa, black oxide tare da mai mai hana tsatsa galibi ana fifita shi don guje wa haɗarin ɓarnawar ɓarna.
