Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4985989 | Tribology International | 2017 | 11 Pages |
Abstract
The performance of carbon nitride (CNx) coated roller bearings is investigated, using a micropitting rig. The rolling performance is evaluated using Stribeck test, with a continuously varying rolling speed (0.2 - 2Â m/s). Rolling contact fatigue tests with constant speeds (0.5, 1, 2, and 3.5Â m/s) are also conducted in order to study the high-cycle performance of the rollers. The obtained Stribeck curve shows that the presence of coatings eliminates run-in, resulting in low friction coefficients (â¼0.08). Raman spectroscopy, performed at the wear tracks, reveals that CNx maintain stable chemical state. Coatings show abrasion although the wear rate is not detrimental for the performance of the rollers, since a CNx-to-steel contact is retained during the entire rolling contact fatigue test.
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Authors
Konstantinos D. Bakoglidis, Ileana Nedelcu, Ivan G. Ivanov, Ralph Meeuwenoord, Susann Schmidt, Erik Janzén, Pascal Ehret, Grzegorz Greczynski, Lars Hultman,