ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The friction and wear properties of phosphor bronze discs sliding against SAE52100 steelballs were evaluated using an Optimol SRV reciprocating friction and wear tester under thelubrication of pure poly-alpha-olefin (PAO) and PAO containing commercial phosphite ester, zincdialkyldithiophosphate (ZDTP) and oleic acid additives. The morphologies of the worn surfaces ofthe phosphor bronze discs were observed using a scanning electron microscope (SEM). In addition,the elemental compositions and chemical states of several typical elements on the worn surfaces ofthe phosphor bronze discs were examined by means of X-ray photoelectron spectroscopy (XPS). Thefindings indicated that the phosphor bronze discs exhibited higher wear resistance under thelubrication of PAO containing phosphite ester than pure PAO, PAO containing ZDTP, and PAOcontaining oleic acid. Also, the phosphor bronze discs exhibited stable friction coefficients as low as0.09-0.11 when lubricated with PAO containing phosphite ester. According to the XPS analyses, itwas considered that the formation of CuO and phosphate led to lower friction coefficient and highwear resistance of phosphor bronze specimens lubricated with PAO containing phosphite ester. In thecase of the phosphor bronze specimens lubricated with PAO containing ZDTP and oleic acid, theformation of organic compounds seemed to lead to lower friction coefficient, but did not seem toaffect the wear resistance
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.852.pdf
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