Effects of Annealing Treatment on Oxidation Rate of Cu-Al Alloy at High Temperature

Liu Guojun1; Jia Shusheng1; Jia Suqiu2

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Effects of Annealing Treatment on Oxidation Rate of Cu-Al Alloy at High Temperature
Issue 1, Pages: 74-76(2008)
Published： 2008 ，
DOI：

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[1]刘国军,贾树盛,贾素秋.退火工艺对CuAl合金高温氧化速率的影响[J].特种铸造及有色合金,2008(01):74-76+2.

Liu Guojun1, Jia Shusheng1, Jia Suqiu2. Effects of Annealing Treatment on Oxidation Rate of Cu-Al Alloy at High Temperature. [J]. Special Casting & Nonferrous Alloys (1):74-76(2008)
[1]刘国军,贾树盛,贾素秋.退火工艺对CuAl合金高温氧化速率的影响[J].特种铸造及有色合金,2008(01):74-76+2. DOI：

Liu Guojun1, Jia Shusheng1, Jia Suqiu2. Effects of Annealing Treatment on Oxidation Rate of Cu-Al Alloy at High Temperature. [J]. Special Casting & Nonferrous Alloys (1):74-76(2008) DOI：

摘要

采用SEM、EPMA和SIMS研究了不同退火工艺对Cu-1.0Al合金高温氧化速率的影响。结果表明

CuAl合金在氢气氛下退火后

表面生成了Al2O3氧化膜

合金抗氧化能力得到明显提高。退火温度及冷却速率对合金的高温抗氧化能力有很大的影响;退火温度越高

冷却速率越慢

形成的Al2O3氧化膜越致密并且与基体结合的越好

合金的抗氧化能力越好。其中

CuAl合金在900℃以0.6℃/min冷却退火后合金的抗氧化能力最好。

Abstract

Effects of annealing treatment on oxidation rate of Cu-1.0Al alloy at high temperature were investigated by SEM

EPMA and SIMS.The results reveal that the oxidation resistance of the alloy at high temperature is greatly strengthened as a result of the creation of Al

film in the surface with annealing at H2 atmosphere

which is improved obviously due to forming more sound Al

film and more strenghened bonding with the matrix with increasing annealing temperature and decreasing the cooling rate.The desirable oxidation resistance of alloy can be presented with annealing at 900 ℃ and cooling at 0.6 K/min.