| 激光熔覆FeNiCrAl合金涂层的组织与腐蚀性能 |
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| 引用本文： | 樊丁,李强,张建斌.激光熔覆FeNiCrAl合金涂层的组织与腐蚀性能[J].兰州理工大学学报,2009,35(2). |
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| 作者姓名： | 樊丁 李强 张建斌 |
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| 作者单位： | 1. 兰州理工大学,甘肃省有色金属新材料重点实验室,甘肃,兰州,730050;兰州理工大学,有色金属合金及加工教育部重点实验室,甘肃,兰州,730050
2. 兰州理工大学,甘肃省有色金属新材料重点实验室,甘肃,兰州,730050 |
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| 摘 要： | 在304不锈钢表面激光熔覆FeNiCrAl合金粉末,获得无裂纹耐腐性能优良的熔覆层,其厚度1.5～2.0 mm.利用SEM 分析熔覆层的显微组织结构,并测试熔覆层的腐蚀性并绘制极化曲线.结果表明,激光熔覆处理后涂层迅速熔化和冷却,组织由均匀的不规则多边形晶粒组成;熔覆层的自腐蚀电位比熔覆基体提高约70 mV、且自腐蚀电流密度比基体低,可知涂层的耐腐蚀性能相对基体要高很多.
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| 关 键 词： | 激光熔覆 显微组织 腐蚀 极化曲线 |
Microstructure and corrosion performance of laser melt-clad FeNiCrAl alloying coating |
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| FAN Ding,LI Qiang,ZHANG Jian-bin.Microstructure and corrosion performance of laser melt-clad FeNiCrAl alloying coating[J].Journal of Lanzhou University of Technology,2009,35(2). |
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| Authors: | FAN Ding LI Qiang ZHANG Jian-bin |
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| Institution: | 1.State Key Lab.of Gansu Advanced Non-ferrous Metal Materials;Lanzhou Univ.of Tech.;Lanzhou 730050;China;2.Key Lab.of Non-ferrous Metal Alloys;The Ministry of Education;China |
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| Abstract: | The laser melt-clad corrosion-resistant coating without cracks which was from 1.5 mm to 2.0 mm in thickness,was obtained by laser cladding of FeNiCrAl powders onto the surface of 304 stainless steel.The microstructure of the laser melt-cladding layer was analyzed with SEM.The corrosion performance was tested and anodic polarization curve was plotted.The results showed that when the powder was treated by laser,the powders were melted and cooled rapidly.The microstructure of laser cladding consisted of unifor... |
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| Keywords: | laser cladding Microstructure corrosion polarization curve |
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