Wear Properties of Metallic Coatings

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: closed (31 July 2020) | Viewed by 3422

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Department of Metallurgy and Material Engineering, Université Laval, Québec, QC G1V 0A6, Canada
Interests: powder metallurgy; metal powder development and fabrication; sintering; machinability of PM components
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Special Issue Information

Dear Colleagues,

Metal coatings provide an efficient strategy to modify and optimize the properties of metallic substrates. Their purposes can be found in a large variety of applications from thermal management to corrosion resistance enhancement and from functionally graded materials to wear resistance amelioration. Consequently, metal coatings come in a variety of formulations that is as large as the number of methods available for producing them.

The importance of this field of material science has encouraged us to organize a Special Issue in Metals that focuses on the wear properties of metallic coatings. Therefore, we are inviting manuscripts that reflect the state-of-the-art in metal coatings development and utilization to minimize wear. Should you feel that you could participate in our endeavour by submitting an original summary of your research along this topic, please contact us with the details of your manuscript.

Prof. Carl Blais
Guest Editor

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Keywords

  • thermal spray
  • cladding
  • physical vapor deposition
  • plating
  • chemical vapor deposition
  • intermetallics
  • synthesis

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Published Papers (1 paper)

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Research

12 pages, 4918 KiB  
Article
Effects of Temperature on Wear Properties and Mechanisms of HVOF Sprayed CoCrAlYTa-10%Al2O3 Coatings and H13 Steel
by Zheng Wei, Yuping Wu, Sheng Hong, Weihua Yang and Wei Shi
Metals 2019, 9(11), 1224; https://doi.org/10.3390/met9111224 - 16 Nov 2019
Cited by 4 | Viewed by 3018
Abstract
In this study, the CoCrAlYTa-10%Al2O3 coatings were prepared by the high-velocity oxygen-fuel (HVOF) spraying. A series of ball-on-disk sliding wear tests were conducted to evaluate the tribological properties of the coatings at different temperatures (25 °C, 200 °C, 400 °C, [...] Read more.
In this study, the CoCrAlYTa-10%Al2O3 coatings were prepared by the high-velocity oxygen-fuel (HVOF) spraying. A series of ball-on-disk sliding wear tests were conducted to evaluate the tribological properties of the coatings at different temperatures (25 °C, 200 °C, 400 °C, and 600 °C). The results showed that the average coefficients of friction (COFs) of the CoCrAlYTa-10%Al2O3 coatings were lower than that of H13 steel at different temperatures. The average COFs of the CoCrAlYTa-10%Al2O3 coatings and H13 steel both decreased with increasing temperature. The wear rate of the CoCrAlYTa-10%Al2O3 coatings increased first and then decreased. The microhardness of worn surface of the CoCrAlYTa-10%Al2O3 coatings increased with increasing temperature, while the microhardness of worn surface of H13 steel at 25 °C and 200°C was higher than that at 400 °C and 600 °C. The wear mechanism of the two materials was mainly abrasive wear. The tribofilms were formed on the worn surface of the CoCrAlYTa-10%Al2O3 coatings, which had a good protective effect. Due to thermal softening and low binding strength of debris, it was difficult for H13 steel to form the tribofilms. The wear rate of H13 steel was much higher than that of the CoCrAlYTa-10%Al2O3 coatings at 400 °C and 600 °C, indicating that the high temperature wear resistance of the coatings was much better than that of H13 steel. Full article
(This article belongs to the Special Issue Wear Properties of Metallic Coatings)
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