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An investigation was made of electrodeposition methods for applying thin (.0006 - 0010-in.) polytetrafluoroethylene (TFE) coatings to steel substrates. The electrodeposited films are intended to serve as dry lubricant and preservative coatings for a wide variety of U.S. Navy nd U.S. ARINE Corps equipment. Thin, smooth, crack-free films within the above thickness range have been produced by anode electrodeposition from TFE baths stabilized with perfluorooctanoic acid. However, these coatings are poorly adhered to steel substrates. Additives to this bath, such as small amounts of fluorinated ethylene propylene (FEP) and/or large amounts of chrome oxide green pigment, result in a slight improvement in the adhesion. This increase is accomplished without appreciably lowering the critical cracking thickness (CCT) necessary to produce crack-free films in the required thickness range. The adhesion, however, is still less than that exhibited by sprayed TFE finishes employing a primer and a further increase is required. Other additives to the plating baths, surface modification of the steel substrate by chemical etchants and/or chromium-containing coatings have ot yet proved successful. (Author).
Solid Lubricants and Self-Lubricating Solids provides a concise treatment of solid lubricants and self-lubricating solids and their applications. These solid lubricants include graphite, molybdenum disulfide, plastics and thermoplastics, nylon, soft metals, fluorocarbons, and phenolics. Low-friction inorganic solids as well as miscellaneous inorganic compounds such as dichalcogenides and fluorides are also discussed. This book is comprised of 11 chapters and begins with an overview of some basic facts about friction and lubrication. The reader is then introduced to inorganic solid lubricants, their their crystal structure, advantages and disadvantages, and the forms in which they are most commonly used. The following chapters focus on the lubricating qualities of graphite, molybdenum disulfide, plastics and thermoplastics, nylon, soft metals, and fluorocarbons. Miscellaneous inorganic compounds with special applications involving friction and wear are also considered. The final chapter is devoted to phenolic laminates, their properties, and their mechanical applications such as gears and bearings. This monograph will be a useful resource for designers and operating engineers.
This handbook is a collection of authoritative information in the new and expanding field of polymer tribology. It brings together various research topics in the field of polymer tribology in a single volume, and provides relevant data in polymer tribology for research and industrial applications.The book's chapters are written by active, world-renowned researchers in the field. Subjects covered in this book range from the fundamentals of polymer tribology to highly applied topics such as machine element design (bearing and gears), hip prosthetic and microsystems applications.Readers in the field of tribology, in general, and polymer tribology, in particular, will find it very useful as it covers nearly all aspects of polymer tribology. Academics creating new courses based on polymer tribology will also find this book's comprehensive coverage valuable. Researchers will find this book a ready source of the state-of-the-art in the field of polymer tribology.
Modern Materials: Advances in Development and Applications, Volume 4 provides a comprehensive coverage of the developments, technical information, and utilization of new and improved materials. This volume covers the presentation of the properties and applications of materials required in moving parts. Chapters are devoted to the discussion of graphite, solid lubricants, plain bearings, high-strength, extra high-strength, and ultrahigh-strength steels, and the effects of radiation on materials. Materials engineers and engineers concerned with the building and design of mechanical equipments will find this book a valuable reference material.