Structure and Tribological Properties of CrTiAlCN Coatings with Various Carbon Contents

Journal Article · Fri Mar 15 04:00:00 EDT 2019 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1007/S11665-019-03931-5· OSTI ID:22970893

Zhang, Maoda; Zhou, Fei; Fang, Haotian; Wu, Zhiwei; Wang, Qianzhi; Kong, Jizhou ^[1]

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1. Nanjing University of Aeronautics and Astronautics, State Key Laboratory of Mechanics and Control of Mechanical Structures (China)

Multi-component CrTiAlCN coatings with different carbon contents were deposited on AISI M2 high-speed steels using unbalanced magnetron sputtering via adjusting the C{sub 2}H{sub 2} flow rates, and their microstructures and mechanical properties were characterized by using SEM, EDS, XRD, Vickers hardness tester and scratch tester, respectively. The tribological properties of CrTiAlCN coatings sliding against SUS440C high carbon martensitic balls were performed using ball-on-disk tribo-tester. The results showed that CrTiAlCN coatings were mainly comprised of (111) and (200) crystal orientation. The maximum hardness of coatings was 29.4 ± 1.5 GPa as the carbon content was 22.5 at.%. With an increase in the carbon content of coatings, the friction coefficients and wear rates of CrTiAlCN/SUS440C tribo-pairs were significantly reduced, and the wear mechanism of coatings changed from adhesive wear to abrasive wear.

• OSTI ID: 22970893
• Journal Information: Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 3 Vol. 28; ISSN 1059-9495; ISSN JMEPEG
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALKYNES
CARBON
COATINGS
CRYSTAL LATTICES
FLOW RATE
FRICTION FACTOR
MARTENSITIC STEELS
NANOSTRUCTURES
SCANNING ELECTRON MICROSCOPY
VICKERS HARDNESS
WEAR
X-RAY DIFFRACTION