Fretting Corrosion Wear of Titanium-Based Alloy (Ti-6Al-4V) in 0.9 wt.% NaCl Solution

Authors

Chen-En Lu, Energy College, Quanzhou Vocational and Technical University, China.
Wen-Ken Li, Department of Mechanical Engineering, Chung Yuan University, Taoyuan City 200, Taiwan
Hung-Hua Sheu, Department of Mechanical Engineering, Lunghwa University of Science and Technology, Taoyuan, 333, Taiwan, ROC.Follow
Jeou-long Lee, Department of Semiconductor Engineering, Lunghwa University of Science and Technology, Taoyuan, 333, Taiwan, ROC
Hung-Bin Lee, Department of Optoelectronics and Materials Technology, National Taiwan Ocean University, Keelung 202, Taiwan, ROCFollow

Abstract

In this study, a high precision fretting tribo-corrosion tester used to analyze the wear and corrosion behavior of Ti alloys in a fretting motion condition. The tester, operated in a ball-on-plate mode, was employed in the fretting corrosion study of metallic bio-materials (Ti and Ti-6Al-4V) under different loads (0 and 10 N), electrolytes (0.9 wt% NaCl and SBF) and fixed displacement frequency (1 Hz). Using profilometer, optical microscope in the experimental analysis and three-body mechanism in the theoretical analysis, the fretting corrosion performances of these bio-medical metals, such as velocity accommodation characteristics, friction, wear, and scratch profile were examined in depth. The dynamic polarization curves indicated that under the same electrolyte and displacement amplitude the mass loss was more severe in fretting corrosion than in simple corrosion. Under different applied potentials -0.5 mVSCE, +0 mVSCE and +1.5 mVSCE, it was found that the friction coefficient and cross-sectional area of worn trace increased with the corrosion potential. Both the mechanisms of adhesive wear and fatigue wear contributed mainly to the wear loss of pure Ti while fatigue wear and abrasive wear were more responsible for the wear loss of Ti-6Al-4V alloy.

Recommended Citation

Lu, Chen-En; Li, Wen-Ken; Sheu, Hung-Hua; Lee, Jeou-long; and Lee, Hung-Bin (2024) "Fretting Corrosion Wear of Titanium-Based Alloy (Ti-6Al-4V) in 0.9 wt.% NaCl Solution," Journal of Marine Science and Technology: Vol. 32: Iss. 1, Article 2.
DOI: 10.51400/2709-6998.2728
Available at: https://jmstt.ntou.edu.tw/journal/vol32/iss1/2