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Titanium has certain properties that make it an ideal material to prevent wear; titanium alloys lend themselves to a versatility of mechanical properties by heat treatment. This should provide a sound tribological combination but, unfortunately, these materials can cause serious galling and fretting. The authors describe the properties of titanium and its alloys, methods of forming and lubricating them and possible methods of combatting wear. In the second part, in our next issue, they will deal with diffusion, electrodeposition, electroless deposition of metallic coatings, and other ways of preventing fretting. In both parts an extensive review of published literature is made and all bibliographical references will be included in our next issue.