1. Metallic Materials Science and Physical Metallurgy Department, University Politehnica Bucharest, 060042 Bucharest, Romania
2. Mechanical Machinery Equipment and Transport Department, University Politehnica of Timisoara, 300006 Timisoara, Romania
3. Department of Mechatronics and Robotics Mechanical Engineering, Tehnical University Gheorghe Asachi of Iasi, 700050 Iasi, Romania
4. Department of Materials and Products Characterization for Electrical and Energy Engineering, National Institute for R&D in Electrical Engineering ICPE-CA, 030138 Bucharest, Romania