RETRACTED: Mechanisms responsible for synergy between fretting and corrosion for three biomaterials in saline solution

This article has been retracted at the request of the editor. Reason: It has been brought to our attention that the above article is substantially based, without the authorʹs permission, on material submitted in 1998 in his PhD dissertation to the University of Science and Technology, Beijing, by Dr Zhijun Bai, and that it was submitted for publication without the knowledge of either Dr Bai, or of Professor Yinshun Wu, the third-named author. The Editor-in-Chief of Wear and Elsevier, who published the article in good faith, now wish to treat this paper as retracted and express their disappointment at the inconvenience caused to Dr Bai and Professor Wu.