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低压等离子喷涂厚钨涂层的组织与性能 被引量:2
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作者 杨震晓 刘敏 +3 位作者 邓春明 陈明娟 邓畅光 车晓舟 《材料保护》 CAS CSCD 北大核心 2013年第2期13-15,19,共4页
为获得高致密度、高热导率及低氧含量的钨喷涂层,采用低压等离子喷涂(LPPS)技术,以4种不同工艺参数在铬锆铜基体上制备了0.9~1.2 mm钨喷涂层。用扫描电镜、氧氮分析仪及闪光导热仪研究了4种钨喷涂层的显微结构、氧含量及热导率,揭示了... 为获得高致密度、高热导率及低氧含量的钨喷涂层,采用低压等离子喷涂(LPPS)技术,以4种不同工艺参数在铬锆铜基体上制备了0.9~1.2 mm钨喷涂层。用扫描电镜、氧氮分析仪及闪光导热仪研究了4种钨喷涂层的显微结构、氧含量及热导率,揭示了优化工艺制备的钨喷涂层的孔径分布,分析了喷涂功率和真空室压力对涂层的影响。结果表明,4种钨喷涂层均呈层状结构,优化工艺制备的钨喷涂层的致密度为98.4%,氧含量为0.2%(质量分数),热导率为110.76 W/(m.K),孔隙的主要孔径分布范围为0.2~4.0μm,以1.0μm左右的孔隙为主。 展开更多
关键词 低压等离子喷涂 钨喷涂层 显微结构 孔径分布
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Analysis of Forging Dies Coated with Tungsten Carbide through HVOF Processing
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作者 Vanessa Moura de Souza Angela Selau Marques +2 位作者 Jorge Antoenio Huff Alexandre da Silva Rocha Luciano Kempski 《Journal of Mechanics Engineering and Automation》 2016年第7期373-378,共6页
In this paper we present a performance evaluation of thermal spraying coated hot forging dies conducted in a production line. The High Velocity Oxy-Fuel process was used for the deposition of a tungsten carbide coatin... In this paper we present a performance evaluation of thermal spraying coated hot forging dies conducted in a production line. The High Velocity Oxy-Fuel process was used for the deposition of a tungsten carbide coating, which is characterized by its optimal adherence and low porosity. A metallurgical characterization of the layer was previously done, in order to obtain reference information to assist in the interpretation of the practical tests results. The coated die allowed an increase in productivity of 37.5%, besides better dimensional stability results through the process and legibility of printed numbers. 展开更多
关键词 Hot forging COATING DIE surface.
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