Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/118198
Title: The Effects of ZDDP and Ashless Antiwear Additives on the Friction and Wear Characteristics of Tribological Coatings on Steel
Authors: EDWARD NG SOO YONG
Keywords: friction, wear, antiwear additives, surface coatings
Issue Date: 18-Jul-2014
Citation: EDWARD NG SOO YONG (2014-07-18). The Effects of ZDDP and Ashless Antiwear Additives on the Friction and Wear Characteristics of Tribological Coatings on Steel. ScholarBank@NUS Repository.
Abstract: Over the years, advanced surface coatings e.g. diamond-like carbon, chromium nitride, and titanium nitride were developed to protect substrates from wear and corrosion. Meanwhile, there is a growing trend towards ``greener?? lubricant additives. Zinc dialkyl dithiophosphates (ZDDP) have been extensively used in lubricants as antiwear agents but the pressure to reduce sulphated ash, phosphorus and sulfur content in engine oils is increasing due to their detrimental effect on exhaust after-treatment devices. Also, zinc?containing lubricants, being potentially hazardous to human health, are considered unsafe for the food and agricultural industries. Therefore, it is important to find a more environmentally friendly substitute. In addition, there is a need to review which materials and lubricants are used in partnership, to capitalize on synergies, and also identify compatibility issues to avoid counterproductive results. Investigations on the impact of ZDDP and an ashless antiwear additive on advanced surface coatings were conducted in this project.
URI: http://scholarbank.nus.edu.sg/handle/10635/118198
Appears in Collections:Ph.D Theses (Open)

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