The Influence of Total Acid Number of Ester Oil in Tribological Behavior of DLC Contacts

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	The Influence of Total Acid Number of Ester Oil in Tribological Behavior of DLC Contacts
	Tang JZ(汤金柱)1,2 ; Ding Q(丁奇)1 ; Zhang GA(张广安)1 ; Hu LT(胡丽天)1 ; Hu LT(胡丽天)
刊名	Tribology Transactions
	2015
卷号	58 期号:5 页码:849-858
关键词	Solid Lubrication Wear Boundary Lubrication Biodegradable Oils Acidity Oxidative Degradation
ISSN号	1040-2004
通讯作者	胡丽天
英文摘要	The synergetic lubrication effects between diamond-like carbon (DLC) coatings and lubricating oils have draw much attention for the past decades, and promising results have been reported between DLC and biodegradable synthetic ester, which might be a potential solution in energy conservation and environmental protection. However, the challenges lie in that the synthetic ester oils exhibit lower oxidation stability than the hydrocarbon oils and are prone to produce organic acids in the aging process. Thus, investigating the tribological behavior of DLC coating in acidified ester oil is meaningful to the long-term reliability of ester-lubricated DLC contacts. In this article, the friction and wear behavior of DLC–DLC, DLC/steel, and steel–steel contacts in acidic ester oils with different total acid values (TANs) is systematically studied. It was found that acidification of ester oil showed certain beneficial tribological effects for the self-mated steel and DLC contacts but could cause severe wear loss on steel counterparts with a special polished appearance for steel–DLC hybrid contacts. By focusing on the properties of the tribofilm formed on the contact surfaces, a possible tribological mechanism was discussed. Finally, it was proposed that the steel–DLC contacts exhibited low tolerance to organic acids and thus the additives that could dissipate the produced organic acids are a critical component in lubricating oils that were tailored for the steel–DLC contacts.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	National Basic Research Program of China ("973" Program, Grant No. 2011CB706603);Applied Basic Research Project of Qingdao: Youth Program (Grant No. 14-2-4-85-JCH)
语种	英语
WOS记录号	WOS:000372693200012
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/18574]
专题	兰州化学物理研究所_固体润滑国家重点实验室兰州化学物理研究所_先进润滑与防护材料研究发展中心
通讯作者	Hu LT(胡丽天)
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Tang JZ,Ding Q,Zhang GA,et al. The Influence of Total Acid Number of Ester Oil in Tribological Behavior of DLC Contacts[J]. Tribology Transactions,2015,58(5):849-858.
APA	Tang JZ,Ding Q,Zhang GA,Hu LT,&胡丽天.(2015).The Influence of Total Acid Number of Ester Oil in Tribological Behavior of DLC Contacts.Tribology Transactions,58(5),849-858.
MLA	Tang JZ,et al."The Influence of Total Acid Number of Ester Oil in Tribological Behavior of DLC Contacts".Tribology Transactions 58.5(2015):849-858.