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论文类型：期刊论文

发表时间：2016-10-01

发表刊物：TRIBOLOGY INTERNATIONAL

收录刊物：SCIE、EI、Scopus

卷号：102

页面范围：319-325

ISSN号：0301-679X

关键字：ATF additives; Tribofilm; Steel clutch plate; Calcium phosphate

摘要：Automatic transmission fluids (ATF) were tested using a new type disc-on-disc simulation tribo-test-rig Wazau triometer with the aim of studying the tribofilm formation on the steel surfaces during the engagement of wet friction clutches. XPS, SIMS, SEM and EDX were used to investigate the chemical composition of this tribofilm. The result confirms that there exist tribochemical reactions between ATF additives and steel rubbing surfaces. PiCa/0 element ratio of the tribofilm is consistent, which has never been reported before in the tribological field of clutch discs. All the results suggest that the chemical composition of this tribofilm is calcium phosphate. Since calcium phosphate ceramics have excellent mechanical and tribological properties, the friction characteristics of wet clutches must have been changed. (C) 2016 Elsevier Ltd. All rights reserved.