铝基体等离子喷涂NiCrAlCo-Y2O3涂层工艺的优化
Process Optimization of NiCrAlCo-Y2O3 Coating on an Aluminum Substrate by Plasma Spraying
摘 要
对喷涂距离、电流、主气流量和辅气流量四个等离子喷涂主要参数设计了四因素三水平的正交试验,研究了工艺参数对在铝基体上喷涂NiCrAlCo-Y2O3涂层的结合强度的影响,并对工艺优化前后的涂层性能进行了分析.结果表明:影响涂层与铝基体结合强度的因素主次顺序是电流、喷涂距离、主气流量和辅气流量;工艺优化后涂层的最大结合强度达到55.1 MPa.
结合强度
正交试验
plasma spraying
bonding strength
orthogonal test
Abstract
Orthogonal tests of spraying distance,electrical current,primary gas flow rate and secondary gas flow rate were carried in order to obtain an optimized plasma spraying parameters.The influence of spraying process parameters on bonding strength of NiCrAlCo-Y2O3 coating was investigated.And microstructure,microhardness and porosity of the coatings of before and after process optimization were studied.The results show that the electrical current and spraying distance have more effect on the bonding strength of the coating and aluminum substrate.An optimized process is achieved,and the bonding strength of optimized coating is improved to 55.1 MPa.
中图分类号 TG174.442
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收稿日期 2005/10/12
修改稿日期 2005/12/21
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作者单位点击查看
备注方学锋(1982-),男,安徽安庆人,硕士研究生.
引用该论文: FANG Xue-feng,WANG Ze-hua,XIA Zhi-min,LIU Teng-bin,LU Jie. Process Optimization of NiCrAlCo-Y2O3 Coating on an Aluminum Substrate by Plasma Spraying[J]. Materials for mechancial engineering, 2006, 30(11): 7～9
方学锋,王泽华,夏志敏,刘腾彬,陆婕. 铝基体等离子喷涂NiCrAlCo-Y2O3涂层工艺的优化[J]. 机械工程材料, 2006, 30(11): 7～9
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