Effect of the Material and Sliding Rate of the Counterface on the Tribotechnical Properties of the (CM Ті–Мо–Вn)–Steel Friction Pair

Abstract

The effect of the material and sliding rate (1, 2, 4, 6, and 15 m/s) of the counterface on the tribological characteristics of the composite (Ті–Мо–ВN)–counterface (steels 45, 65G, ShKh15, 40Kh, 1Kh18N9T, nitrided titanium and BrO10 bronze) friction pairs under a pressure of 0.8MPa and dry friction in air is investigated. It is established that, under the specified friction conditions, the composite in pair with BrO10 bronze is almost inoperative. During friction of the composite in pairs with steels 45, 65G, ShKh15, 40Kh, and 1Kh18N9T, the increase in the sliding rate from 1 to 6 m/s results in an increase of the friction coefficient, linear wear of the friction pairs, mass loss of the composite and counterface, whereas the temperature of the friction surface increases. The highest temperature of the friction surface of the composite is reached if operated with steel 45. The temperature, sliding rate, and pressure applied lead to the synthesis of a secondary film (on the surface of the composite) of such a phase composition and structure that provide (in pair with steel 45) higher tribological properties of the composite than those in pairs with the other steels. At all sliding rates of the counterface, the tribological properties of the friction pairs depend not only on the properties of the composite material (chemical and phase composition, structure, and mechanical properties), but also on the same properties of the counterface material.