<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The tests were conducted on a wheel/axle press-fit joint model, which consisted of a shaft and a sleeve. Macrographic observations were demonstrated fretting wear on the shaft surface with and without coatings. In the case of the uncoated shaft, wear around the entire circumference of the axle seat was visible in the form of a peculiar ring of a specific width. The coated shaft surface was distinguished by a considerably smaller number of visible traces of wear. Wear was observed around the entire circumference of the axle seat, was spaced at random, and insignificantly sized areas each time. Micrographic observations with the use of a scanning microscope demonstrated that fretting was primarily comprised of the build-up of the material from both surfaces joined together. In addition to the build-up, surface micro-abrasion, micropits and microcracks are observed, albeit to a lesser extent.</p></abstract>

The tests were conducted on a wheel/axle press-fit joint model, which consisted of a shaft and a sleeve. Macrographic observations were demonstrated fretting wear on the shaft surface with and without coatings. In the case of the uncoated shaft, wear around the entire circumference of the axle seat was visible in the form of a peculiar ring of a specific width. The coated shaft surface was distinguished by a considerably smaller number of visible traces of wear. Wear was observed around the entire circumference of the axle seat, was spaced at random, and insignificantly sized areas each time. Micrographic observations with the use of a scanning microscope demonstrated that fretting was primarily comprised of the build-up of the material from both surfaces joined together. In addition to the build-up, surface micro-abrasion, micropits and microcracks are observed, albeit to a lesser extent.

The Influence of a Crn+a-C:H:W Coating on the Development of Fretting Wear in a Model of a Wheel–Axle Press-Fit Joint on a Wheel Set of a Railway Vehicle

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The tests were conducted on a wheel/axle press-fit joint model, which consisted of a shaft and a sleeve. Macrographic observations were demonstrated fretting...

The Influence of a Crn+a-C:H:W Coating on the Development of Fretting Wear in a Model of a Wheel–Axle Press-Fit Joint on a Wheel Set of a Railway Vehicle

Published Online: May 21, 2020

Page range: 173 - 187

Received: Mar 24, 2018

DOI: https://doi.org/10.4467/2353737XCT.18.065.8377

Keywords
PVD coating, CrN+a-C:H:W, rotational bending, fretting wear, press-fit joint, wheel set

© 2020 Sławomir Kowalski, published by Sciendo

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 Public License.

The Influence of a Crn+a-C:H:W Coating on the Development of Fretting Wear in a Model of a Wheel–Axle Press-Fit Joint on a Wheel Set of a Railway Vehicle

Published Online: May 21, 2020

Page range: 173 - 187

Received: Mar 24, 2018

DOI: https://doi.org/10.4467/2353737XCT.18.065.8377

KeywordsPVD coating, CrN+a-C:H:W, rotational bending, fretting wear, press-fit joint, wheel set

© 2020 Sławomir Kowalski, published by Sciendo

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 Public License.

Keywords
PVD coating, CrN+a-C:H:W, rotational bending, fretting wear, press-fit joint, wheel set