Rolling contact fatigue life of AISI 52100 steel balls with mineral and synthetic polyester lubricants with PTFE nanoparticle powder as an additive
作者： E. Fernández Rico , I. Minondo , D. García Cuervo
DOI: 10.1016/J.WEAR.2008.08.020
关键词: Contact angle 、 Lubricant 、 Polyester 、 Composite material 、 Wetting 、 Metallurgy 、 Viscosity 、 Scanning electron microscope 、 Synthetic oil 、 Stress (mechanics) 、 Materials science
摘要: Abstract This work evaluates the rolling contact fatigue life of AISI 52100 steel bearing balls with mineral and synthetic oil, without additive, using a four-ball tester. IP 300/87 was applied total load 600 kg (corresponding to maximum Hertz stress 8.709 MPa). SN-350 (a neutral solvent) TMP-05 (an environment friendly polyester) same viscosity were additivated PTFE nanoparticle powder in different percentages. The test time for each specimen recorded processed on Weibull probability plots. L 10 50 are given pure base oils 1, 3 5 wt.% powder. results point an increase when additive-containing used. In order provide some understanding protection mechanism angle influence surface wettability lubricant unctuosity analysed. Scanning electron microscopy LINK techniques used study pitting, crack propagation, chemical additive fluorine content.
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