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昆明冶金高等专科学校学报 ›› 2015, Vol. 31 ›› Issue (5): 1-5.DOI: 10. 3969/j. issn. 1009一0479.2015.05.001

• 冶金技术与材料 •    下一篇

304不锈钢表面喷涂Ni-Al涂层与耐磨涂层的组织与摩擦性能

杨桂生   

  1. 昆明冶金高等专科学校冶金材料学院,云南 昆明 650033
  • 收稿日期:2015-09-01 出版日期:2015-11-30 发布日期:2015-11-30
  • 作者简介:杨桂生(1972一),男,云南曲靖人,副教授,工学硕士,主要从事表面工程研究。

Microstructure and Tribological Properties of Ni-Al Coating and Wear Resistant Coating on 304 Stainless Steel

YANG Gui一sheng   

  1. Faculty of Metallurgy & Materials,Kunming Metallurgy College,Kunming 650033,China
  • Received:2015-09-01 Online:2015-11-30 Published:2015-11-30

摘要:

304奥氏体型不锈钢因其良好的耐蚀性广泛用于工业生产,但是受组织所限,硬度较低。采用高速电弧喷涂设备在304不锈钢表面制备Ni-Al涂层和耐磨涂层,研究了涂层的组织结构、硬度及耐磨损性能。结果表明:喷涂Ni-Al合金和陶瓷材料丝材,都能有效地改善304不锈钢表面的耐磨性能,试验所制备的Ni-Al合金涂层成形良好,组织均匀且结构致密,涂层表面显微硬度值达601 HV,耐磨性约为304不锈钢基体的3倍;试验所制备的陶瓷涂层成形良好,组织均匀且结构致密,涂层摩擦系数只有Ni-Al涂层的53%,涂层表面显微硬度值达999 HV ,讨磨性约为304不锈钢基体的6倍,具有良好的耐磨性。

关键词: 304不锈钢, 电弧喷涂, 涂层, 耐磨性

Abstract:

304 austenitic stainless steel is widely used in industrial production because of its good corrosion resistance,but limited by the organization,the hardness is lower. In this paper,a high speed electric arc spraying equipment was used to prepare the Ni-Al coating and wear resistant coating on 304 stain-less Steel.  The microstructure,hardness and wear resistance of the coating was studied.  The results show that the wear resistance of the 304 stainless steel can be improved by spraying a Ni-Al alloy and ceramic material.  The prepared Ni-Al alloy coating has excellent microstructure and compact structure.  The microhardness of the coating is 601 HV,and the wear resistance is 3 times to that of 304 stainless steel.  The ceramic coating has good shape,uniform structure and compact structure.  The coating friction coefficient is only 53% of Ni-Al coating.  The microstructure's hardness of the coating is 999 HV,and the wear resistance is about 6 times than that of 304 stainless steel.  The coating has excellent wear resistance.

Key words: 304 stainless steel, electric arc spraying, coating, wear resistance

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