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The effects of lubricant additives on wear and scuffing resistance of copper alloys under boundary conditions
Author(s) -
Sheng Yu Meng,
Rao Ming Yuan
Publication year - 1989
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.3010010204
Subject(s) - lubricant , copper , metallurgy , brass , materials science , bronze , base oil , alloy , composite material , scanning electron microscope
Abstract The effects of lubricant additives on alloy composition and structure, and on the wear and scuffing resistance of copper alloys, were investigated. The copper alloys used were Sn bronze, Sn‐Zn‐Pb bronze, Al‐Fe bronze, and Si‐Mn brass. The base oil used was straight mineral oil. The additives used were dimer acid, phosphonate ester, sulphide olefine cotton‐seed oil, ZDDP and n‐dibutyl phosphite. The test results revealed that Si‐Mn brass shows the highest resistance to wear and scuffing, and Sn‐Zn‐Pb the lowest. It also revealed that oiliness additives are superior in wear and tear scuffing resistance to EP additives, especially sulphur‐containing additives. The authors also noted that copper alloys show good resistance to wear and scuffing when coupled with a polished steel surface.