金属热处理 ›› 2022, Vol. 47 ›› Issue (8): 266-270.DOI: 10.13251/j.issn.0254-6051.2022.08.044

• 表面工程 • 上一篇    下一篇

等离子喷涂氮化硼纳米片增强Ni3Al复合涂层的摩擦学性能

娄旭耀1, 周波1, 宋英2, 陆小龙3   

  1. 1.河南省锅炉压力容器安全检测研究院, 河南 郑州 450016;
    2.常熟理工学院 机械工程学院, 江苏 常熟 215500;
    3.苏州大学 机电工程学院, 江苏 苏州 215137
  • 收稿日期:2022-04-28 修回日期:2022-06-25 出版日期:2022-08-25 发布日期:2022-09-19
  • 作者简介:娄旭耀(1980—),男,高级工程师,主要研究方向为承压类特种设备及涂层材料,E-mail:lxy15936232592@163.com。
  • 基金资助:
    河南省科技攻关项目(202102210190)

Tribological properties of plasma-sprayed boron nitride nanoplatelet reinforced Ni3Al composite coating

Lou Xuyao1, Zhou Bo1, Song Ying2, Lu Xiaolong3   

  1. 1. The Boiler and Pressure Vessel Safety Inspection Institute of Henan Province, Zhengzhou Henan 450016, China;
    2. Department of Mechanical Engineering, Changshu Institute of Technology, Changshu Jiangsu 215500, China;
    3. School of Mechanical and Electrical Engineering, Soochow University, Suzhou Jiangsu 215137, China
  • Received:2022-04-28 Revised:2022-06-25 Online:2022-08-25 Published:2022-09-19

摘要: 采用等离子喷涂技术在钛合金表面制备出六方氮化硼纳米片(BNNP)增强Ni3Al复合涂层。结果表明,涂层物相主要为原位生成的Ni3Al和少量Al2O3。相比于Ni3Al涂层,BNNP优异的力学性能和自润滑性能赋予复合涂层良好的减摩耐磨性能,其耐磨性能提高了约1.5倍。Ni3Al涂层的主要磨损机制是脆性断裂和三体磨粒磨损,BNNP/Ni3Al复合涂层的主要磨损机制则转变为轻微的磨粒磨损,且磨损表面BNNP润滑转移膜的形成有益于抑制对磨偶件的接触损伤。

关键词: 氮化硼纳米片, Ni3Al复合涂层, 摩擦学性能, 等离子喷涂

Abstract: Boron nitride nanoplatelet (BNNP) reinforced Ni3Al composite coatings were fabricated by using plasma spray. The results show that the main phases of the coating contain in-situ synthesized Ni3Al and trace amounts of Al2O3. Compared with monolithic Ni3Al coating, the BNNP/Ni3Al composite coating displays a good combination of improved wear resistance and relatively low coefficient of friction, especially the wear resistance of the composite is increased up to 1.5 times. The addition of BNNPs induces a change of the dominant wear mechanisms from brittle fracture and three-body abrasive wear associated with the monolithic Ni3Al coating to mild abrasive wear along with the BNNP/Ni3Al composite coating. Furthermore, the formation of BNNP tribolayer on the worn surface of the composite coating not only contributes to the self-lubrication function but also significantly suppresses contact damage of both the composite coating and its counterpart.

Key words: boron nitride nanoplatelet, Ni3Al composite coating, tribological properties, plasma spraying

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