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通过对3 GPa压力处理前后7075铝合金在3.5%NaCl溶液中腐蚀速率和电化学参数的测试,结合金相组织的观察,探讨了3 GPa压力处理对7075铝合金耐腐蚀性的影响。结果表明:3 GPa压力处理能使该合金的腐蚀电位正移,腐蚀速率减小,耐腐蚀性提高。
By measuring the corrosion rate and electrochemical parameters of 7075 aluminum alloy in 3.5% NaCl solution before and after 3 GPa pressure treatment, the effect of 3 GPa pressure on the corrosion resistance of 7075 aluminum alloy was discussed based on the observation of microstructure. The results show that: 3 GPa pressure treatment can make the corrosion potential of the alloy positive shift, reduce the corrosion rate, corrosion resistance increased.