Frictional property of Ti–B–N coating with preferred grain orientations deposited by arc ion plating under dry condition

It was shown in the previous paper that the low coefficients of friction of TiN coatings with (111) preferred grain orientation were measured under dry condition. In this paper, the new Ti–B–N coatings with (111) preferred grain orientation were developed for the industrial application. The coefficients of friction of the Ti–B–N coatings against steel materials were measured by ball-on-disc friction tester. As a result, it was found that the Ti–B–N coatings were able to maintain the low coefficients of friction over long sliding distance under severe sliding condition in comparison with the TiN coatings. It is understood that the Ti–B–N coatings have the possibility of being applied to the sliding parts of industrial machines under dry condition.