Published November 2019 | Version v1
Journal article Metadata-only

Structural and tribological properties of CrMoCN coatings with various Mo contents in artificial seawater

Creators

  • 1. Key Laboratory of Helicopter Transmission Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016 (China)
  • 2. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016 (China)
  • 3. Advanced Coatings Applied Research Laboratory, Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong (China)

Description

CrMoCN coatings with various Mo contents were prepared on Ti6Al4V disks and Si wafers using unbalanced magnetron sputtering at various Mo target currents, and their crystallite phases and bonding structures were characterized using XRD and TEM as well as XPS, respectively. The mechanical properties of coatings were measured by nano-indenter and the tribological properties of CrMoCN/SiC tribopairs in artificial seawater were tested by ball-to-disk tribo-tester. The results showed that Cr, Mo and N elements mainly existed in the form of (Cr, Mo)N solid solution crystals, while C element mainly existed as amorphous a-C and amorphous a-CNx. The hardness and elastic modulus of CrMoCN coatings increased first, and then decreased as Mo target current further increased to 3.0 A. The friction coefficients and wear rates of CrMoCN/SiC tribopairs decreased overall with the increase in the Mo target current due to the synergistic lubrication and wear-reducing effect of tribolayers (MoO3 and SiO2·2H2O). The abrasive and tribo-chemical wear were the wear mechanisms of CrMoCN/SiC tribopairs. CrMoCN-3.0 coating showed the best tribological properties in the artificial seawater.

Additional details

Identifiers

DOI
10.1016/j.apsusc.2019.06.297;
PII
S0169433219320343;

Publishing Information

Journal Title
Applied Surface Science
Journal Volume
493
Journal Page Range
p. 485-496
ISSN
0169-4332
CODEN
ASUSEE

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
55042234
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ABRASIVES; COATINGS; FRICTION FACTOR; HARDNESS; LUBRICATION; MAGNETRONS; MOLYBDENUM OXIDES; SILICA; SILICON CARBIDES; SILICON OXIDES; SOLID SOLUTIONS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY
Descriptors DEC
CARBIDES; CARBON COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; DIFFRACTION; DIMENSIONLESS NUMBERS; DISPERSIONS; ELECTRON MICROSCOPY; ELECTRON SPECTROSCOPY; ELECTRON TUBES; ELECTRONIC EQUIPMENT; EQUIPMENT; HOMOGENEOUS MIXTURES; MECHANICAL PROPERTIES; MICROSCOPY; MICROWAVE EQUIPMENT; MICROWAVE TUBES; MINERALS; MIXTURES; MOLYBDENUM COMPOUNDS; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; PHOTOELECTRON SPECTROSCOPY; REFRACTORY METAL COMPOUNDS; SCATTERING; SILICON COMPOUNDS; SOLUTIONS; SPECTROSCOPY; TRANSITION ELEMENT COMPOUNDS

Optional Information

Copyright
Copyright (c) 2019 Elsevier B.V. All rights reserved.