The Effect of Additives on the Wear Behavior of Bearing Steels with RfO(CFfO)x(CF2CF2O)y(CF2CF2CF2O)zRfPerfluoropolyalkylether Fluids

Autor:	Bruce Schreiber, Shashi K. Sharma, Carl E. Snyder, Lois J. Gschwender, George W. Fultz, Larry S. Helmick
Rok vydání:	1998
Předmět:	Gas turbines Routine screening Bearing (mechanical) Materials science Mechanical Engineering Metallurgy Humidity Surfaces and Interfaces Tribology Surfaces Coatings and Films law.invention Reciprocating motion Mechanics of Materials law Antiwear additive Tribometer
Zdroj:	Tribology Transactions. 41:78-86
ISSN:	1547-397X 1040-2004
Popis:	In previous research, high wear of M-50 bearing steel in low humidity air environments was observed for RfO(CF2O)x (CF2CF2O)y(CF2CF2CF2O)zRf base fluid in a reciprocating tribometer. In this work, the effect of humidity on wear was observed with a four-ball tribometer using the same base fluid in an oxygen-deficient environment with 52100 bearing steel. In low humidity atmospheres, air was found to decrease wear compared to nitrogen in the four-ball wear tribometer. Next, the effects of additives soluble in the base fluid on the wear behavior of M-50 and 52100 steel were studied at low humidity using both a reciprocating tribometer as well as a four-ball tribometer. An attempt was made to adjust conditions of the four-ball test to allow its use for routine screening of additives; however, under the conditions attempted, the four-ball tribometer, while improved in repeatability for petfluoropolyalkylethers, was not as discriminating as the reciprocating tribometer. All of the additives were found to be eff...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7c35d2dd2c0c947d97db94c36f4c1aaf https://doi.org/10.1080/10402009808983724 Zobrazit plný text záznamu