Lubricity of Phosphorus EP Additives in Ironing Process

Kuniaki Dohda*, Zhrgang Wang, Kazuto Miwa, Satoshi Kashiwaya

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


A series of experiments was carried out using a strip-ironing-type tribometer to investigate the lubricating effect of phosphorus EP additives in the metal forming processes. Experiments using aluminum alloy (A6061-T 4) and stainless steel (SUS304) showed that all kinds of phosphorus EP additives have the lubricating improvement effect and the best is the phosphite diester with the number of carbon less than 12. XPS spectra of ironed surfaces showed that the lubricating improvement effect of phosphite diester is due to the adsorption and that of phosphite triester is due to the chemical reaction.

Original languageEnglish (US)
Pages (from-to)3143-3149
Number of pages7
JournalNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Issue number649
StatePublished - 2000


  • Aluminum Alloy
  • Friction Coefficient
  • Lubrication
  • Phosphorus EP Additives
  • Plastic Forming
  • Stainless
  • Tribology
  • XPS

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


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