Microstructure and Mechanical Properties of TiN/NbN Multilayered Coating

Chien Cheng Liu; Kuang I Liu; Huai Wei Yan; Chia Li Ma; Jow Lay Huang

doi:10.4028/www.scientific.net/KEM.434-435.466

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 434-435Microstructure and Mechanical Properties of...

Microstructure and Mechanical Properties of TiN/NbN Multilayered Coating

Abstract:

In this study, multilayers of TiN/NbN were deposited by d.c. magnetron sputtering on die steel substrates. The structure, morphology and nano-hardness were assessed using X-ray diffraction, atomic force microscopy (AFM), stylus profiler (XP-2 stylus profiler) and nanoindentation, respectively. Wear tests were performed on pin-on-disk configuration and dry sliding conditions, at 5N load by using hardened steel ball. The result shows TiN with highly (111) preferred orientation. On mechanical properties, Young’s modulus and hardness values increase for layers number increase. At 64 layers films had the highest nano-hardness, Young’s modulus values. The TiN/NbN multilayer films presented changes in its morphology becoming more granulated and density after heating up to 500°C. A significant decrease in friction coefficient has been achieved for TiN/NbN multilayers against steel ball.

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Key Engineering Materials (Volumes 434-435)

Pages:

466-468

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.434-435.466

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Online since:

March 2010

Authors:

Chien Cheng Liu, Kuang I Liu, Huai Wei Yan, Chia Li Ma, Jow Lay Huang

Keywords:

DC Reactive Magnetron Sputtering, Friction Coefficient (FC), TiN/NbN Multilayer

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