The Effect of Poly(alkyl methacrylate) Film-Formers on Pitting Performance of Driveline Fluids

• Krapfl Thilo

  Evonik RohMax Additives GmbH

• Shakhvorostov Dmitriy

  Evonik RohMax Additives GmbH

• Langston Justin

  Evonik RohMax USA, Inc.

• Eisenberg Boris

  Evonik RohMax Additives GmbH

• Debus Daniel

  Evonik RohMax Additives GmbH

• Miklozic Ksenija Topolovec

  Powertrib Ltd.

• Miklozic Gvido

  Powertrib Ltd.

抄録

Driven by diminishing fossil fuel resources, global warming and subsequently rigid legislation on CO₂ emission, fuel economy is a major challenge for the automotive industry. Each element of the powertrain has been optimized or newly designed to increase efficiency. In this optimization process the engine oils and transmission fluids are important design elements and their contribution to improved efficiency is significant. Polyalkylmethacrylates (PAMAs) are widely used as viscosity index improvers in engine, transmission and hydraulic oils. They have been shown to adsorb from oil solution onto metal surfaces to produce thick and viscous boundary films. These films are maintained even in low speed and high temperature conditions and thus produce a reduction of friction and wear. It was found that specifically designed film-forming PAMAs can improve pitting performance of lubricant formulations. The paper describes the impact of tailor-made functionalized PAMAs on boundary film formation and explores their ability to increase the fatigue life of lubricants.

収録刊行物

• Tribology Online

  Tribology Online 7 (3), 132-138, 2012

  一般社団法人 日本トライボロジー学会

キーワード

• polyalkylmethacrylates
• viscosity index improvers
• film-former
• fatigue life
• pitting

詳細情報

• CRID: 1390001205270458624
• NII論文ID: 130002099854
• DOI: 10.2474/trol.7.132
• ISSN: 18812198
• ISSN: 1881218X
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可