A proposal for a fretting wear criterion for coated systems with complete contact based on accumulated friction energy density

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• 作者：E. Leidich ; A. Maiwald ; ^{andreas.maiwald@mb.tu-chemnitz.de} ; J. Vidner
• 关键词：Fretting ; Fretting wear life ; Friction energy ; Carbon-based coatings (including DLC) ; Solid lubricant coatings
• 刊名：Wear
• 出版年：2013
• 出版时间：15 January, 2013
• 年：2013
• 卷：297
• 期：1-2
• 页码：903-910
• 全文大小：3911 K

文摘

This paper presents the results of basic studies that investigate fretting behaviour in different steel-pairing coatings. The experiments enabled the identification of the variation in the temporal and tribological behaviour of each pairing as a result of the chosen coating. The experiments were performed on a test bench for the determination of friction coefficients with a standardised torsion test. Using flat annular contact surfaces that were pressed together under a pressure of 25 or 50 MPa, the tested samples were alternatingly loaded with twisting angle amplitudes of 0.23¡ã and 0.5¡ã (or 46 and 100 ¦Ìm slip, respectively). This technique enabled the recording of optical damage (fretting, etc.) and strength-affecting mechanisms (damage of the substrate material). The results were evaluated using an appropriate damage criterion, thereby identifying the accumulated dissipated friction energy as a fail-related physical quantity.