• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2017, Vol. 53 ›› Issue (24): 25-33.doi: 10.3901/JME.2017.24.025

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Effect of Wear Particle Size on Dry Tribological Properties of Surface Texturing Titanium

LI Xingliang1,2, YUE Wen1,3, HUANG Fei1, KANG Jiajie1,3, FU Zhiqiang1,3   

  1. 1. School of Engineering and Technology, China University of Geosciences(Beijing), Beijing 100083;
    2. Aviation Key Laboratory of Science and Technology on Precision Manufacturing, Beijing Precision Engineering Institute for Aircraft Industry, Aviation Industry Corporation of China, Beijing 100076;
    3. Key Laboratory on Deep GeoDrilling Technology, Ministry of Land and Resources, China University of Geosciences(Beijing), Beijing 100083
  • Received:2017-05-10 Revised:2017-08-28 Published:2017-12-20

Abstract: In order to improve anti-friction and anti-wear performance of the titanium alloy drilling tools used in the ultra deep drilling, deep sea drilling, and drilling engineering in outer space. Dimple textures are prepared on TA2 titanium surface by means of laser surface texturing (LST). Tribological behaviors of the texturing surfaces are investigated under lubrication with two kinds of simulated lunar soil in dry sliding contact on a MS-T3000 friction and wear tester. The micro-morphologies and element content on the worn surfaces are analyzed by scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS), respectively. The result shows that the wear particle would be compressed to completely embed into the dimples while lubricated by small particles. The small wear particles combine with rolling and sliding movements in the process of sliding which lead to lower friction and wear on the texturing TA2 surface. However, unavoidable sliding damages take place the texturing surface lubricated by large particles. The large foreign particles are too difficult to be squeezed to embed completely into the dimples results in larger friction coefficients and wear rate on the texturing TA2 surface. So, the highest reduction ratios for friction coefficient and wear rate are 50% and 53% for the texturing surface which is lubricated by small particles comparing with it lubricated by large particles. Besides, the matching rate of abrasive particle size and texture parameter can greatly reduce friction and wear.

Key words: abrasive wear, laser surface texturing, titanium alloy, tribological property, wear particle size

CLC Number: