1. Department of Electrotechnical Complexes, Novosibirsk State Technical University, 630073 Novosibirsk, Russia
2. Department of Materials Science, Tomsk Polytechnic University, 634050 Tomsk, Russia
3. Department of Mechanical Engineering, Tomsk Polytechnic University, 634050 Tomsk, Russia
4. Yurga Technological Institute (Branch), Tomsk Polytechnic University, 652055 Yurga, Russia