Tribological Evaluation of PS300: A New Chrome Oxide-Based Solid Lubricant Coating Sliding Against Al2O3 from 25° to 650°C

• Published in: Tribology transactions Vol. 40; no. 1; pp. 163 - 167
• Main Authors: Dellacorte, C., Laskowski, J. A.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Colchester Taylor & Francis Group 01.01.1997; Taylor & Francis
• Subjects: Applied sciences; Ceramics; Exact sciences and technology; Friction; Friction, wear, lubrication; High Temperature; Machine components; Mechanical engineering. Machine design; Solid Lubricants; Surface Films/Coatings; Tribology; Wear; Temperature range 0273-0400 K; Sliding wear; Wear test; High temperature; Experimental study; Coatings; Superalloys; Chromium oxide; Solid lubricants; Testing equipment; Temperature range 0400-1000 K; Alumina; Ceramic materials; Self lubricating material; Sliding friction; Tribology
• ISSN: 1040-2004; 1547-397X
• DOI: 10.1080/10402009708983642

This paper presents the tribological characteristics of Al 2 O 3 sliding against PS300, a chrome oxide-based self-lubricating coaling. Al 2 O 3 , pins were slid against PS300-coated superalloy disks in air under a 4.9 N load at velocities of 1 to 8 m/s. At a sliding velocity of I m/s, friction ranged from 0.6 at 25° C to 0.2 at 650° C. Wear factors for the Al 2 O 3 pins were in the 10 −7 mm 3 /N-m range and in the 10 −5 mm 3 /N-m range for the PS300 coating. The test results suggest that increased surface temperature resulting from either frictional heating, generated by increased sliding velocity, or ambient heating caused a reduction in friction and wear of the sliding couple. Based upon these results, the tested material combination is a promising candidate for high temperature wear applications. Presented as a Society of Tribologists and Lubrication Engineers paper at the ASME/STLE Tribology Conference in San Francisco, California, October 13-17, 1996