소성∙가공 (Transactions of Materials Processing)

  • 제8권3호
  • /
  • Pages.327-327
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  • 1999
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  • 1225-696X(pISSN)
  • /
  • 2287-6359(eISSN)
한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
권호 표지

The Effect of Small Additions of Zr, Cr, Mg, Al, and Si on the Oxidation of 6:4 Brass

  • 이동복 (플라즈마 응용 표면기술 연구 센터) ;
  • 문재진 (플라즈마 응용 표면기술 연구센터)
  • 발행 : 1999.06.01

⟨ 이전 논문 다음 논문 ⟩

초록

The oxidation behavior of 60%Cu-40%Zn brass haying 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 A1₂CuO₄, 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 alloyswere prone to cracking, wrinkling, and spallation.

키워드

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