利用电镀法在包铝LY12铝合金表面上制备约20 μm厚 的Cr镀层，通过对热处理前后镀铬试样的断面显微硬度分布的测试，用扫描电镜对镀铬试样的断面形貌进行观察分析以及电子探针测定镀铬试样界面处的元素线分布状态等分析了镀铬试样的界面显微组织.同时，分别在60℃、Na2CO3(25 g/L)和室温、NaOH(10 g/L)两种溶液中对镀铬层的耐蚀性能进行了考察.结果表明，通过镀铬处理在上述两种腐蚀环境下使包铝LY12铝合金的耐蚀性能得到显著提高.
A Cr coating of 20 μm can be electrodeposited on surface of Al overlaid YL12.Microhardness distribution across the Cr coating and substrate was measured.Cross-sectional micrographs were observed and analyzed by SEM.The element distribution across the Cr coating and substrate was inspected by EPMA.In addition,corrosion resistance of the alloy without and with Cr coating was assessed in solutions of Na2CO3 of 25 g/L at 60℃,and NaOH of 10 g/L at room temperature.The results show that the corrosion resistance of Cr coated alloy in the two corrosive medium was excellent.
参考文献
| [1] |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%