Journal
MATERIALS LETTERS
Volume 169, Issue -, Pages 214-217Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2016.01.085
Keywords
Dimpled TiN layer; Gradient nanoscale structure; Multilayer structure; Surfaces; Glow-discharge plasma nitriding; Tribological performance
Funding
- National Natural Science Foundation of China [51205183, 51301088]
- Natural Science Foundation of Jiangsu Province [BK2012475]
- Qinglan Project of Jiangsu Province [233140225201404]
- Opening Project of Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology [ASMA201406]
- Practice Innovation Program for graduate students in colleges of Government of Jiangsu Province [SJLX15_0729]
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The dimpled gradient nanoscale TiN (nano-TiN) layer was prepared on the pure Ti surface by the combined process of supersonic fine particles bombarding (SFPB) and glow-discharge plasma nitriding. A large numbers of dimples (30-40 mu m in diameter) homogenously distribute on the prepared nano-TiN layer surface and are beneficial to the reservation of oil and wear debris during friction process. The nano-TiN layer is about 25 mu m in thickness with a three-layered nanoscale structure and the grain size decreases sequentially from the outer layer to the inner one. The nano-TiN layer with higher mechanical properties displays enhanced friction and wear reducing effects compared to the SFPB-dimpled Ti surface. (C) 2016 Elsevier B.V. All rights reserved.
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