Microstructure and tribological behavior of multilayered CrN coating by arc ion plating

Dry sliding wear and friction tests of CrN coating on two types of aluminum alloy substrates, 6061 Al and 7075 Al, deposited by arc ion plating were performed with a ball-on-disk tribometer. The effects of normal load and the mechanical properties of the substrate on the friction coefficient and wear resistance of CrN coating were investigated. The worn surfaces were observed by scanning electron microscopy. The results show that surface microhardness of CrN-coated 7075 Al is higher than that of CrN-coated 6061 Al. With an increase in normal load, wear volume increases, while the friction coefficient decreases. The friction coefficient of CrN-coated 6061 Al is higher than that of CrN-coated 7075 Al, while the wear resistance of CrN-coated 6061 Al is lower than that of the CrN-coated 7075 Al. This indicates that the substrate mechanical properties have strong influence on the friction coefficient and wear of CrN coating. The main wear mechanism was fragments of CrN coating, caused by apparent plastic deformation of substrate during wear tests.

Download Full-text

Microstructure and properties of CrN coating via multi-arc ion plating on the valve seat material surface

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2021.161966 ◽

2021 ◽

pp. 161966

Author(s):

Chaochao Ji ◽

Qiaoqin Guo ◽

Jianping Li ◽

Yongchun Guo ◽

Zhong Yang ◽

...

Keyword(s):

Material Surface ◽

Valve Seat ◽

Arc Ion Plating ◽

Crn Coating ◽

Ion Plating ◽

Microstructure And Properties

Download Full-text

A comparative study on tribological behavior of TiN and TiAlN coatings prepared by arc ion plating technique

Surface and Coatings Technology ◽

10.1016/s0257-8972(02)00474-7 ◽

2002 ◽

Vol 161 (2-3) ◽

pp. 237-242 ◽

Cited By ~ 69

Author(s):

Seog-Young Yoon ◽

Jong-Kuk Kim ◽

Kwang Ho Kim

Keyword(s):

Comparative Study ◽

Tribological Behavior ◽

Arc Ion Plating ◽

Ion Plating ◽

Plating Technique

Download Full-text

Microstructure and mechanical properties of CrN coating deposited by arc ion plating on Ti6Al4V substrate

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2011.04.037 ◽

2011 ◽

Vol 205 (19) ◽

pp. 4690-4696 ◽

Cited By ~ 34

Author(s):

Z.K. Chang ◽

X.S. Wan ◽

Z.L. Pei ◽

J. Gong ◽

C. Sun

Keyword(s):

Mechanical Properties ◽

Arc Ion Plating ◽

Crn Coating ◽

Ion Plating ◽

Ti6al4v Substrate ◽

Microstructure And Mechanical Properties

Download Full-text

INFLUENCE OF ION BOMBARDMENT ON CRITICAL LOAD OF CrN FILM DEPOSITED ONTO ALUMINUM ALLOY BY ARC ION PLATING METHOD

International Journal of Modern Physics B ◽

10.1142/s0217979206040465 ◽

2006 ◽

Vol 20 (25n27) ◽

pp. 3842-3847 ◽

Cited By ~ 4

Author(s):

DAISUKE YONEKURA ◽

RI-ICHI MURAKAMI

Keyword(s):

Aluminum Alloy ◽

Critical Load ◽

Adhesive Strength ◽

Substrate Surface ◽

Ion Bombardment ◽

Arc Ion Plating ◽

Crn Coating ◽

Ion Plating ◽

High Incident Energy ◽

Plating Method

To improve the adhesive strength between the film and substrate, ion bombardment is frequently performed before the deposition of thin film coatings. In this study scratch tests were carried out on aluminum alloy protected with CrN film coated by arc ion plating method. In order to investigate the influence of ion bombardment conditions on the adhesive strength between the aluminum alloy substrate and the CrN coating, the ion bombardment process was performed before CrN coating under several different bias voltages. The properties near the interface were analyzed using SIMS. As a result, the ion bombardment process had an optimum condition and excessive bias voltage reduced the critical load. A Cr rich layer forms near the substrate surface by implantation of Cr ions due to the high incident energy ions. The Cr rich layer is shallow for the high critical load sample, while the low critical load sample has a deep Cr rich layer. It appears that the adhesion strength between the substrate and the film will depend on the depth or intensity of this Cr rich layer.

Download Full-text