J. Mater. Sci. Technol. ›› 2007, Vol. 23 ›› Issue (03): 387-391.

• 论文 • 上一篇    下一篇

Preparation and Tribological Properties of Ni-P Electroless Composite Coating Containing Potassium Titanate Whisker

华林   

  1. 武汉理工大学材料科学与工程学院
  • 收稿日期:2006-02-08 修回日期:2006-06-07 出版日期:2007-05-28 发布日期:2009-10-10
  • 通讯作者: 华林

Preparation and Tribological Properties of Ni-P Electroless Composite Coating Containing Potassium Titanate Whisker

Yaxu JIN, Lin HUA   

  1. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
  • Received:2006-02-08 Revised:2006-06-07 Online:2007-05-28 Published:2009-10-10
  • Contact: Lin HUA

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摘要： 用化学镀方法制备了Ni-P-钛酸钾晶须复合镀层，利用扫描电镜观察镀层表面形貌，用能谱仪测定镀层成分。并用销盘式摩擦磨损试验机在干摩擦条件下测试所得复合镀层的摩擦学性能。结果表明，复合镀层的耐磨性能显著改善，在相同条件下与传统耐磨材料SiC增强的镍磷复合镀层相比，具有更低的摩擦系数和磨损率。复合镀层优良的耐磨性能来自钛酸钾晶须本身的高强度，以及本身的纤维形态和在基体中的均匀分布。

关键词: 钛酸钾晶须, 化学镀, 复合镀层, 摩擦学性能

Abstract: Nickel-phosphorus (Ni-P) composite coatings containing potassium titanate (K2Ti6O13) whiskers (PTWs) were prepared by electroless plating. The surface morphology and component of coatings were investigated by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX), respectively before and after wear test. The tribological performance was evaluated using a pin-on-disk wear tester under dry conditions. It is found that the Ni-P-PTWs composite coatings exhibit higher wear resistance than Ni-P and Ni-P-SiC electroless coatings. The favorable effects of PTWs on the tribological properties of the composite coatings are attributed to the super-strong mechanical properties and the specific tunneling structures of PTWs. The PTWs greatly reinforce the structure of the Ni-P-based composite coatings and thereby greatly reduce the adhesive and plough wear of Ni-P-PTWs composite coatings.

Key words: Potassium titanate whiskers, Electroless plating, Composite coating, Tribological properties