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- Title
Mechanical, tribological, corrosion and tribocorrosion properties of ZrN<sub>x</sub>O<sub>y</sub> coatings on Ti–45Nb alloys by multi-arc ion plating.
- Authors
Dang, Bo; Yang, Kai; Tian, Tian; Li, Fengkun; Ding, Feng; Wei, Dongbo; Zhang, Pingze
- Abstract
In this study, four ZrNxOy coatings were deposited on the surface of Ti–45Nb alloy by multi-arc ion plating technology at different N/O ratios. The effects of oxygen content on the mechanical properties, wear resistance, electrochemical corrosion and tribocorrosion properties of the coatings were investigated separately. As the increasing of O2 ratio, the hardness value decreases from 30.2 to 9.7 GPa; the Young's modulus values decrease from 322.1 to 172.2 GPa. The H/E and H3/E2 values showed a decreasing trend with the increasing O2, which indicates a gradual decrease in the load-bearing capacity of the coatings. The critical load of these coatings in scratch test ranges from 12 N, 7.2 N, 5 N to 3N. In the friction test, both the TiNb alloy and coating exhibited predominantly abrasive and adhesive wear. The relatively low wear rate of the ZrN coating demonstrated its excellent wear resistance; however, the wear-resisting property of the ZrNxOy coating gradually decreases as the oxygen content increases, and ZrO2 coating showed the poorest wear resistance. On the contrary, the higher the oxygen content, the better the electrochemical corrosion resistance, and ZrO2 coating showed the excellent corrosion resistance. The results of tribocorrosion test show that the ZrNxOy coating has better wear resistance in simulated body fluid solution compared to Ti–Nb alloys. The experimental results and design concepts of the paper can provide a better understanding of the preparation of medical titanium alloy surface functional coatings with good comprehensive performance.
- Subjects
TRIBO-corrosion; ION plating; ADHESIVE wear; ELECTROLYTIC corrosion; WEAR resistance; FRETTING corrosion
- Publication
Journal of Materials Science, 2024, Vol 59, Issue 16, p7060
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-024-09575-8