Surface layer structure of AISI 1020 steel at different stages of dry sliding under electric current of high density

International Conference on Advanced Materials and New Technologies in Modern Materials Science 2015

Aleutdinov, K.A.^1 ; Rubtsov, V. Ye^1,2 ; Fadin, V.V.^2 ; Aleutdinova, M.I.^2,3

National Research Tomsk Polytechnic University, Institute of Cybernetics, Lenin avenue, 30, Tomsk

634050, Russia^1

Institute of Strength Physics and Materials Science, pr.Akademicheskii, 2/4, Tomsk

634021, Russia^2

Seversk Technological Institute, Branch of State Autonomous Educational Institution of Higher Professional Education, National Research Nuclear University MEPhI, pr.Kommunisticheskii' 65, Seversk

636036, Russia^3

关键词: Contact spots;    Current collection;    Sliding surface;    Surface layers;    Wear intensities;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/116/1/012022/pdf
DOI  :  10.1088/1757-899X/116/1/012022

来源: IOP

【 摘 要 】

Wear intensity of the sliding electric contact steel 1020/steel 1045 depending on sliding time is presented at the contact current density higher than 100 A/cm2without lubricant. It is shown that wear intensity of 1020 steel decreases at increasing of sliding time. Wear intensity is stabilized after some sliding time. This time (burn-in time) decreases at reduction of current density. Structural changes are realized in surface layer. Signs of liquid phase are observed on sliding surface. This liquid isn't a result of melting. It is established using Auger spectrometry that the contact layer contains up to 50 at.% of oxygen.