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The effect of small additions of Zr, Cr, Mg, Al, and Si on the oxidation of 6∶4 brass

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Abstract

The oxidation behavior of 60%Cu-40%Zn brass having small amounts of Zr, Cr, Mg, Al, and Si was studied between 873 and 1043 K in air. The alloying element of Mg was harmful, while other alloying elements were beneficial to oxidation resistance. Particularly, the simultaneous addition of Al and Si decreased the oxidation rate drastically. During oxidation, Zr formed ZrO2 Cr formed CuCr2O4, Mg formed MgO, Al formed Al2CuO4, and Si formed amorphous SiO2. These oxides were incorporated in the oxide scale composed predominantly of ZnO. The oxide scales formed on all the tested alloys were prone to cracking, wrinkling, and spallation.

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Authors and Affiliations

  1. Center for Advanced Plasma Surface Technology, Sungkyunkwan University, 300 Cheoncheon-dong, Jangan-gu, 440-746, Suwon, Korea

    Dong-Bok Lee & Jae-Jin Moon

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  1. Dong-Bok Lee
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  2. Jae-Jin Moon
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Lee, DB., Moon, JJ. The effect of small additions of Zr, Cr, Mg, Al, and Si on the oxidation of 6∶4 brass. Met. Mater. Int. 8, 327–332 (2002). https://doi.org/10.1007/BF03186103

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