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Vol.41, No.2, 90 ~ 96, 2002
Title
Mechanical Behavior : Effects of Cr and Zr Addition on Tensile and Corrosion Properties of Cu-6Ni-4Sn Alloy
한승전 S. Z. Han , 김상식 S. S. Kim , 김기원 K. W. Kim , 김창주 C. J. Kim
Abstract
The effects of Cr and/or Zr additions on tensile and corrosion behaviors of Cu-6i-4Sn alloy were examined. It was observed that the changes in microstructure and tensile properties of Cu-6Ni-4Sn alloy were not significant with the addition of 0.1 to 0.3% Cr and/or Zr in the present study. The resistance to pitting corrosion was, however, improved in 3.5% NaCl solution with particularly the addition of Cr and Zr. The passive films observed in Cu-6Ni-4Sn alloys with Cr and/or Zr addition appeared to be more stable than non-Cr and/or Zr containing counterpart. The mechanism(s) of the improved resistance to pitting corrosion for Cu-6Ni-4Sn alloy with the addition of Cr and/or Zr is discussed based on the experimental observations.
Key Words
Cu-6Ni-4Sn alloy, Tensile property, Corrosion property Cr and/or Zr
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