Annealing effect of hydrogen or argon atmosphere on corrosion resistance of CuAl dilute alloys at high temperature

作者：Liu G J; Jia S S; Zhu Y F^*; Hong S H; Lim J W; Mimura K; Isshiki M

来源：Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2008, 472(1-2): 235-241.

DOI：10.1016/j.msea.2007.03.085

• CuAl alloy
• high-temperature oxidation
• annealing
• atmosphere
• Al2O3

The annealing effect of H-2 or Ar atmosphere on corrosion resistance (CR) of CuAl alloys with 0.2 wt.% Al (CuAl0.2) was examined through oxidation at 973 K in 0.1 MPa O-2. For annealing at low temperature of 873 K, Ar atmosphere is more effective for improving CR of CuAl0.2. In the case of higher temperature annealing, the highest CR of CuAl0.2 is observed under H-2 atmosphere at 1173 K with slow cooling. Analysis shows that the protection ability of the Al2O3 surface layer formed during annealing is dependent on the partial 02 pressure remnant in H-2 or Ar atmosphere.

• 出版日期2008-1-15
• 单位吉林大学