Influence of Al Content on the Microstructure and Properties of the CrAlN Coatings Deposited by Arc Ion Plating

Four CrAlN coatings with various Al content were prepared by arc ion plating technology under different target currents. The effect of the Al content on the microstructure, chemical compositions, element chemical bonding states and mechanical properties of the CrAlN coatings was analyzed. X-ray diff...

Full description

Saved in:
Bibliographic Details
Published in:Acta metallurgica sinica : English letters 2017-12, Vol.30 (12), p.1221-1230
Main Authors: Fan, Qi-Xiang, Zhang, Jiao-Jiao, Wu, Zheng-Huan, Liu, Yan-Mei, Zhang, Tao, Yan, Bing, Wang, Tie-Gang
Format: Article
Language:English
Subjects:
Aluminum
Arc deposition
Characterization and Evaluation of Materials
Chemical bonds
Chemical composition
Chemistry and Materials Science
Corrosion and Coatings
Hardness
Ion plating
Materials Science
Mechanical properties
Metallic Materials
Microstructure
Nanotechnology
Organometallic Chemistry
Oxidation
Protective coatings
Scanning electron microscopy
Silicon wafers
Solid solutions
Solution strengthening
Spectroscopy/Spectrometry
Temperature
Tribology
Wear resistance
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Four CrAlN coatings with various Al content were prepared by arc ion plating technology under different target currents. The effect of the Al content on the microstructure, chemical compositions, element chemical bonding states and mechanical properties of the CrAlN coatings was analyzed. X-ray diffraction results show that the primary phase of the CrAlN coating is fcc-(Al, Cr)N when the Al content is about 44.02 at.%. However, when the Al content increases to about 53.34 at.%, hcp-AlN phase emerges in the coating. And the hcp-AlN phase becomes the main phase in the CrAlN coating with Al content of about 69.55 at.%. Cross-sectional images show that all the four coatings possess dense structures and the deposition rate of Al atom is higher than that of Cr atom. The hardness of the CrAlN coating with Al content about 44.02 at.% is the largest (3149.72 HV) due to the solid solution hardening effect of the Al element. When the hcp-AlN phase is generated in the CrAlN coating, the hardness declines. The tribological experiment shows that the wear resistance of the CrAlN coating decreases gradually with increasing Al content when sliding against 100Cr6 steel ball.
ISSN:1006-7191
2194-1289
DOI:10.1007/s40195-017-0656-6