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ABSTRACT

Are diamond like carbon (DLC) coatings a panacea for tribology contacts?

Peter A Dearnley
(Prof.Dr. )
Boride Services Ltd, Blakedown, Worcestershire UK

Diamond like carbon (DLC) coatings in principle offer the prospect of sustained low friction and wear resistant surfaces for oil lubricated engineering devices like cam-lifters, bearings and gears. However, the up-take of such coatings, despite extensive R&D efforts, has not been as widespread as initially anticipated by many experts. This paper examines the potential failure mechanisms of DLC coated components that are life-limiting and how these might be mitigated.

RESUME

Born: 10/01/54, Wakefield, West Yorkshire, UK

Education: Cardiff High School, 1965-1970; Wolverhampton College of Further Education, 1971-1974; University of Birmingham, (Department of Metallurgy and Materials) 1974-1980.

Employment: Trainee Industrial Chemist, BP Plastics (South Wales), 1970-1971; Trainee Metallurgist, Haybridge Steel Company (Telford), 1971-1974; Materials Technologist, Sandvik Hard Materials (Coventry), 1980-1983; Research Fellow University of Birmingham, (Department of Metallurgy and Materials) 1983-1988 with Professor Tom Bell; Research Associate and Senior Research Associate University of Cambridge, (Department of Materials Science & Metallurgy) 1988-1989, with Professor Bill Clyne. Lecturer and Senior Lecturer University of Auckland, New Zealand (Department of Chemical & Materials Engineering), 1989-1995; Senior Lecturer University of Leeds (School of Mechanical Engineering) 1996-2010. Director Boride Services Limited, since 2010.

Degree qualifications: BSc, Honours (Metallurgy & Materials), University of Birmingham, 1977; PhD University of Birmingham, 1980. Thesis title ‘Wear mechanisms of CVD coated cemented carbides’ SRC CASE award sponsored by Sandvik. Supervised by Edward Moor Trent (author of ‘Metal Cutting’, published by Butterworths).

Professional qualifications: Fellow of the Institute of Materials, Minerals and Mining (FIMMM) and Chartered Engineer (C. Eng). Professional member since 1983.


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