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Coatings 2019, 9(2), 140; https://doi.org/10.3390/coatings9020140

Torsional Fretting Wear Behavior of PVD TiCN Coated CuNiAl Blade Bearing in Oil and Artificial Seawater

1,2
and
1,*
1
The State Key Laboratory of Digital Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
2
HUST-SHENZHEN Research Institute, No 9, Avenue 3, Yuexing, Yuehai Street, Nanshan District, Shenzhen 518507, China
*
Author to whom correspondence should be addressed.
Received: 23 January 2019 / Revised: 11 February 2019 / Accepted: 19 February 2019 / Published: 20 February 2019
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Abstract

The feasibility of alleviating torsional fretting wear of the blade bearing by preparing PVD TiCN coating was studied. The results show that the friction torque was highly influenced by the wear debris acting as the solid lubricant. The TiCN coating reduced the wear volume by 97.6% and 62.3% in oil and artificial seawater, respectively, which was mainly due to an increase in surface hardness. In oil, the produced sulfates and phosphates prevent seizures between the friction pair and the worn surface was characterized by polishing wear. In artificial seawater, the wear mechanism was a combination of mechanical wear and corrosion wear. This study reveals that the TiCN coating is suitable for alleviation of fretting wear in the blade bearing. View Full-Text
Keywords: torsional fretting; TiCN coating; oil; artificial seawater; blade bearing torsional fretting; TiCN coating; oil; artificial seawater; blade bearing
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Zhang, P.; Wang, J. Torsional Fretting Wear Behavior of PVD TiCN Coated CuNiAl Blade Bearing in Oil and Artificial Seawater. Coatings 2019, 9, 140.

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