Effect of Aging Treatment on Microstructural and Mechanical Characteristics of PEO Coatings on Mg-Al Alloy

材料科学技术（英文）, 2008, 24(1): 37-40.

^1, , ^2,

1.Department of Materials Engineering, Korea Aerospace University, Gyeonggi-do, 412-791, Korea

2.Department of Materials Engineering, Korea Aerospace University, Gyeonggi-do, 412-791, Korea

基金项目: Dual Use Technology Development Program(04-KI-MP-01)

Effect of Aging Treatment on Microstructural and Mechanical Characteristics of PEO Coatings on Mg-Al Alloy

S.Y. Chang ^1, , Y.L.Kim ^2,

1.Department of Materials Engineering, Korea Aerospace University, Gyeonggi-do, 412-791, Korea

2.Department of Materials Engineering, Korea Aerospace University, Gyeonggi-do, 412-791, Korea

Keywords： Cast Mg-6 wt pct Al

Cast Mg-6 wt pct Al alloy solution-treated at 683 K for 16 h and aged at 498 K was coated by plasma electrolytic oxidation (PEO) method. The Mg-6 wt pct Al alloy aged for 16 h exhibited the highest microhardness and wear resistance. After PEO coating, however, the microhardness and wear resistance of coatings on Mg-6 wt pct Al alloy showed a tendency to decrease with increasing aging time, which was in aggrement with the change of thickness with aging time. In addition, the coatings on solution-treated Mg-6 wt pct Al alloy had better microhardness and wear resistance than those on aged Mg-6 wt pct Al alloys. Consequently, it can be understood that the aging treatment has a deleterious influence on the mechanical properties of coatings on Mg-6 wt pct Al alloy.

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材料期刊网

Effect of Aging Treatment on Microstructural and Mechanical Characteristics of PEO Coatings on Mg-Al Alloy

参考文献