Influence of Negative Bias Voltage on the Microstructure and Tribological Properties of CrTiAlN Composite Films

Abstract:

By using the multi-ion plating,the CrAlTiN composite films were made on the suface of piston rings to improve its tribological properties and increase service life. The effects of negative bias voltage on morphology, hardness, adhesion strength, microstructure and tribological properties were studied. The results show that the morphology, phases, hardness, adhesion and wearability of the films were varied with negative bias voltage. When the negative bias voltage was at -200V, the hardness, adhesion strength of CrTiAlN coatings reaches maximum and the surface roughness, weightlessness for CrTiAlN composite coatings reaches minimum. And the conclusion can be obtained that the key factor which influences the wearability of the films are the function of the crystal size and adhesion strength together.

• Periodical: Applied Mechanics and Materials (Volumes 155-156)
• Pages: 974-978
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.155-156.974
• Online since: February 2012
• Authors: Zhi Hai Cai, Yue Lan Di, Zhen Yang, Ping Zhang
• Keywords: CrAlTiN Composite Coatings, Microstructure, Multi-Ion Plating, Piston Rings, Tribological Property

References

[1] J. Lin, Z.L. Wu, X.H. Zhang, B. Mishra. Thin Solid Films. Vol. 517 (2009) , p.1887.

[2] Narendra B. Dahotre, S. Nayak. Surface & Coatings Technology. Vol. 194(2005) , p.58.

[3] J.A. Picas, A. Forn, G. Matthaus. Wear. Vol. 261 (2006) , p.477.

[4] P.L. Tam, Z.F. Zhou, P.W. Shum, K.Y. Li. Thin Solid Films. Vol. 516 (2008), p.5725.

[5] Sun Kyu Kim, Vinh Van Le, Pham Van Vinh. Surf. Coat. Technol. Vol. 202 (2008), p.5400.

[6] A. Lippitz, T. Hubert, Surf. Coat. Technol. Vol. 200 (2005) , p.250.