Adhesion, friction, and deformation characteristics of Ti-(Ca,Zr)-(C,N,O,P) coatings for orthopedic and dental implants

This paper reports on the results of a comparative investigation into the physical, mechanical, and tribological characteristics of Ti-(Ca,Zr)-(C,N,O,P) coatings. The hardness, elastic modulus, elastic recovery, adhesion strength, friction coefficient, and wear rate of the coatings are determined. The specific features revealed in the deformation and fracture of the coatings deposited on various substrates in the course of adhesion tests are described. It is shown that the critical loads responsible for different types of adhesion and cohesion failure of the coatings can be determined from a set of parameters obtained during their scratching. The features observed in the behavior of the friction characteristics of the coatings during tribological tests in air and in a physiological solution are discussed.