中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 29 No. 11 November 2019 |
（1. Mechanical Engineering Department, ABBES Laghrour-University, Khenchela, P. O. 1252, 40004, Algeria;
2. Tribology and Materials Group, Laboratory of Foundry,
Badji Mokhtar University, Annaba, B. O., 12 CP 23000, Algeria;
3. Mater Sciences Department, ABBES Laghrour-University, Khenchela, P. O. 1252, 40004, Algeria;
4. Laboratoire de Mise en forme des Matériaux Métalliques (LMF2M),
Université Badji—Mokhtar, B. P. 12, 23000 Annaba, Algeria;
5. Mechanical Engineering Department, King Fahd University of Petroleum and Minerals,
Box 1180, Dhahran 31261, KSA;
6. Department of Environmental Engineering, College of Chemistry and Environmental Engineering,
Shenzhen University, Shenzhen 518055, China;
7. Arts et Metiers ParisTech, MSMP, 8, Boulevard Louis XIV, 59046 Lille Cedex, France;
8. Department of Physical Metallurgy and Materials Technology,
Brandenburg Technical University, 03046 Cottbus, Germany）
Abstract:The effect of sintering temperature (1073-1373 K) on the structural and tribological properties of nanostructured ball- milled β-type Ti-15Mo samples was investigated. The prepared samples were characterized using various apperatus such as X-ray diffractometer, scanning electron microscope (SEM) and ball-on-plate type oscillating tribometer. Wear tests were conducted under different applied loads (2, 8 and 16 N). Structural results showed that the mean pore and crystallite size continuously decreased with increasing sintering temperature to reach the lowest values of 4 nm and 29 nm at 1373 K, respectively. The relative density of the sintered sample at 1373 K was as high as 97.0%. Moreover, a higher sintering temperature resulted in higher relative density, greater hardness and elastic modulus of the sample. It was observed that both the friction coefficient and wear rate were lower in the sample sintered at 1373 K which was attributed to the closed porosity.
Key words: Ti-15Mo; wear; tribological behaviour; nanotribology; sintering; biomedical applications
