Effects of phosphorus-free antioxidants on oxidation stability and high-temperature tribological properties of lubricants-Reference-Cited by-同舟云学术

Effects of phosphorus-free antioxidants on oxidation stability and high-temperature tribological properties of lubricants

Published:2017-04-04 Issue:12 Volume:231 Page:1527-1536
ISSN:1350-6501
Container-title:Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
language:en
Short-container-title:Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology

Author:

Liping Wang¹²,Dongya Zhang³,Hongxing Wu¹,Youbai Xie¹,Guangneng Dong¹

Affiliation:

1. Key Laboratory of Education Ministry for Modern Design & Rotor-Bearing System, Xi'an Jiaotong University, Xi'an, People's Republic of China

2. Petro China Lanzhou Lubricating Oil R & D Institute, Lanzhou, People's Republic of China

3. School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an, People's Republic of China

Abstract

Oxidation stability plays an important role on the engine oil service performance. In this paper, the phosphorus-free antioxidants of diphenylamine, hindered phenol and dibutyldithiocarbamate, combined with zinc dialkyldithiophosphate were added as antioxidants in the base oil and the fully formulated 5W-30 oil, and the oxidation stabilities were evaluated by pressurized differential scanning calorimetry and Romaszewski oil bench oxidation standard tests. Meanwhile, the tribological properties of the fresh and aged oils were evaluated by a SRV tribo-meter. The results indicated that (i) an optimal ternary complex antioxidant of dibutyldithiocarbamate: diphenylamine: hindered phenol (ratio of 2:1:2) displayed good antioxidation property, and (ii) the fully formulated 5W-30 oil containing optimized ratio phosphorus-free antioxidants had better tribological properties than the commercial SN 5W-30 oil.

Publisher

SAGE Publications

Subject

Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering

Link

http://journals.sagepub.com/doi/pdf/10.1177/1350650117700343

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