Actual Problems in Machine Building 2016 No. 3

Actual Problems in Machine Building. 2016. N 3 Innovative Technologies in Mechanical Engineering ____________________________________________________________________ 70 OPERABILITY ASSESSMENT OF WEAR-RESISTANT PLASMA COATINGS AFTER THE HIGH-TEMPERATURE INFLUENCE BY HIGH-FREQUENCY CURRENTS Zverev E.A. , Ph.D. (Engineering), Associate Professor, e-mail: egor_z@ngs.ru Skeeba V.Yu. , Ph.D. (Engineering), Associate Professor, e-mail: skeeba_vadim@mail.ru Tregubchak P.V. , Assistant, e-mail: ipv@mail.ru Vakhrushev N.V. , Ph.D. student, e-mail: vah_nikit@mail.ru Parts K.A. , Master’s Degree student, e-mail: krispars@yandex.ru Zhigulev A.K. , Student, e-mail: alexey-zhigulev@mail.ru Novosibirsk State Technical University, 20 Prospekt K. Marksa, Novosibirsk, 630073, Russian Federation Abstract The article presents the results of microhardness research of wear-resistant plasma coatings from high-chromium powder material after the influence by high-frequency currents. In contrast to the initial structure, the microhardness distribution according to the layer depth becomes almost uniform, although its level remains on average values with the initial one. The comparative wear- resistance tests under friction-sliding conditions of samples with initial structure and the structure obtained after the induction heating influence demonstrate the absence of wear-resistance increase. Keywords wear-resistance, induction heating, quality, microhardness, plasma coatings