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Cu-40% Zn 조성을 가진 황동의 산화특성에 미치는 Cr, Zr 및 Sn 의 영향
김성훈,이동복,정승부 대한금속재료학회(대한금속학회) 2001 대한금속·재료학회지 Vol.39 No.3
Brass(60%Cu-40%Zn), brass-0.83%Cr, brass-0.81%Zr and brass-0.80%Sn alloys were prepared by induction melting followed by thermomechanical treatment. Oxidation tests were performed on the prepared alloys between 600 and 770℃ for up to 1320hr in air. It was found that the oxidation resistance increased in the order of brass, brass-0.81%Zr, brass-0.83%Cr and brass-0.80%Sn. The oxide layers formed on all the prepared specimens were primarily comported of ZnO. Throughout the existing ZnO layer, Cu-oxides in ease of brass, and (Cu-oxides + Sn-oxides) in case of brass-0.80%Sn were additionally present. ZrO₂ in case of brass-0.81%Zr, and CuCr₂O₄ in case of brass-0.83%Cr were found at the bottom part of the ZnO layer.
김성훈,이동복,정승부,최송천,문재진 대한금속재료학회(대한금속학회) 2001 대한금속·재료학회지 Vol.39 No.3
Induction-melted Cu-(0, 10, 20, 30, 40)%Zn allays were oxidized between 600 and 770℃ in air. With an increase in Zn contents, the oxidation resistance increased and, correspondingly, thin scales were formed. However, the scale adherence decreased with an increase in Zn contents. The oxidation products formed on Cu-(0, 10)%Zn consisted of ZnO with a small amount of copper oxides, while those formed on Cu-(20, 30, 40)%Zn consisted of (Cu₂O + CuO) with a small amount of ZnO.