Local Laser Treatment of Tribological Plasma Sprayed Coatings

In the article the results of set of experiments concerning the changes in microstructure of plasma sprayed Al₂O₃, Cr₂O₃ and W₂C coatings of tribological test pieces obtained with use of locally applied laser beam treatment are given and discussed. The improvement of sprayed on coating layer adhesion to the steel base was ascertained and evaluated. The possibilities of the application of the described technology for development and production of slide elements of tribological joints are noticed.