Tribological Properties of Gray Cast Iron Lubricated with PAO and Amine Salt of Alkoxyl Phosphate Additive

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Author(s)

    • Xia Yanqiu
    • National Institute of Advanced Industrial Science and Technology (AIST)
    • Sasaki Shinya
    • National Institute of Advanced Industrial Science and Technology (AIST)|Department of Mechanical Engineering, Tokyo University of Science
    • Mano Hiroki
    • National Institute of Advanced Industrial Science and Technology (AIST)
    • Murakami Takeshi
    • National Institute of Advanced Industrial Science and Technology (AIST)
    • Nakano Miki
    • National Institute of Advanced Industrial Science and Technology (AIST)

Abstract

The friction and wear properties of gray cast iron (FC250) specimens sliding against AISI 52100 steel ball were evaluated under the lubrication of PAO (poly-alpha-olefin), PAO+ZnDTP (1.5 mass% ZnDTP) and PAO+PN (amine salt of alkoxyl phosphate, 1.5 mass% PN) oils. The tests were conducted using an Optimol SRV reciprocating friction and wear tester at a normal load of 50 N, and sliding frequencies of 10, 20, 30, 40 and 50 Hz. The morphologies of the worn surfaces of the FC250 specimens were observed using a scanning electron microscope (SEM) with energy dispersion X-ray spectroscopy (EDS). In addition, the elemental compositions and chemical states of several typical elements on the worn surfaces of the FC250 specimens were examined by means of X-ray photoelectron spectroscopy (XPS). The results indicated that the PAO+PN lubricant exhibited higher wear-resistance and lower friction coefficients than pure PAO and the PAO+ZnDTP lubricants, and this was partly attributed to the tribo-chemical reaction between the lubricant and the sliding surfaces.

Journal

  • Tribology Online

    Tribology Online 2(3), 78-82, 2007

    Japanese Society of Tribologists

Codes

  • NII Article ID (NAID)
    130000066671
  • Text Lang
    ENG
  • Data Source
    J-STAGE 
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