Friction Characteristics of Surface Nitriding Modification Layer of Ti-6Al-4V ELI Titanium Alloy in Seawater Environment

Abstract:

In order to study the tribological properties of titanium alloy materials and reinforced PTFE pairs treated by surface nitriding modification in seawater environment under low speed and high load, the physical properties of surface nitriding modified treatment were observed and measured with Ti-6Al-4V ELI as the substrate, and the samples of substrate and surface nitriding were modified as disks to 25% fiberglass , 15% glass fiber +5% graphite and 60% tin bronze reinforced PTFE as distribution pins, the friction properties of substrate and surface nitriding modification layer in seawater environment were studied by friction tester. The results show that the friction coefficient between titanium alloy and auxiliary pair is above 0.1, the friction coefficient of titanium alloy surface treatment specimen is lower than that of TC4 titanium alloy, the wear of surface nitriding modified treatment sample is significantly slight, the friction coefficient of 60% tin bronze distribution is the highest, and the friction coefficient of 15% fiberglass +5% graphite is about 15% higher.

• Periodical: Materials Science Forum (Volume 1005)
• Pages: 18-23
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1005.18
• Online since: August 2020
• Authors: Xing Sheng Lao, Xu Feng Zhao, Yong Liu, Chun Hui Dai, Wei Jian Lyu*
• Keywords: Friction, Seawater Environment, Surface Nitriding Modification, Titanium Alloy

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