alexa Dry Sliding Tribological Behavior at Elevated Temperature of In Situ Aluminum Matrix Composites Fabricated by Al-ZrO2-C System with Different Mole Ratio of C/ZrO2 | Abstract
ISSN: 2168-9806

Journal of Powder Metallurgy & Mining
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Research Article

Dry Sliding Tribological Behavior at Elevated Temperature of In Situ Aluminum Matrix Composites Fabricated by Al-ZrO2-C System with Different Mole Ratio of C/ZrO2

Zhu H1*, Xiaodong Sun1, Jiewen Huang1, Jianliang Li1 and Zonghan Xie2

1College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China

2School of Mechanical Engineering, University of Adelaide, SA 5005, Australia

*Corresponding Author:
Zhu H
College of Materials Science and Engineering
Nanjing University of Science and Technology
Nanjing, 210094, PR China
Tel: +86-25-84307689
E-mail: [email protected]

Received Date: January 04, 2017; Accepted Date: January 30, 2017; Published Date: February 14, 2017

Citation: Zhu H, Sun X, Huang J, Li J, Xie Z (2017) Dry Sliding Tribological Behavior at Elevated Temperature of In Situ Aluminum Matrix Composites Fabricated by Al- ZrO2-C System with Different Mole Ratio of C/ZrO2. J Powder Metall Min 6: 153. doi:10.4172/2168-9806.1000153

Copyright: © 2017 Zhu H, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

The tribological behavior of the composites fabricated by an Al-ZrO2-C system with different mole ratios of C/ZrO2 at elevated temperature in air atmosphere were investigated by using a pin-on-disc wear tester. The reinforcement amounts and kinds of the composites varied with molar ratio of C/ZrO2. With the increase of the molar ratio of C/ ZrO2 from 0 to 1, the Al3Zr blocks decrease gradually and almost disappear finally. On the contrary, the ZrC particles form and increases in its amount. At elevated temperature, the composites have similar variation trend in the mass loss varied with sliding velocity and applied load, respectively. When the test temperature is at 373 K, the mass loss increases with increasing the sliding velocity, and when the sliding velocity is around 0.6 m/s, the mass loss increases to a maximum value and then decreases with further increase in sliding velocity. However, the mass loss always decreases with increasing the sliding velocity at 473 K. With the increase of C/ZrO2 molar ratio, the wear resistance of the composite increases and its friction coefficient decreases. The metal flows and adhesive wear become the main wear modes with increasing the applied load and test temperature.

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