The research of structure and mechanical properties of superhard electro-spark coatings for hardwearing mining tools

2nd International Symposium on Fundamental Aspects of Rare-earth Elements Mining and Separation and Modern Materials Engineering

材料科学;物理学

Bajin, P.A.^1 ; Chijikov, A.P.^1 ; Leybo, D.V.^1 ; Chuprunov, K.O.^1 ; Yudin, A.G.^1 ; Alymov, M.A.^1 ; Kuznetsov, D.V.^1

National University of Science and Technology MISiS Moscow, Leninsky prospekt 4, 119049, Russia^1

关键词: Deposited layer;    Electrospark alloying;    Frictional properties;    Industrial testing;    Microstructure and properties;    Nanosized structures;    Rare earth metals;    Self-propagating high temperature synthesis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/112/1/012021/pdf
DOI  :  10.1088/1757-899X/112/1/012021

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The development of low cost and hardwearing mining tools is one of the most important areas in mining industry. It is especially important for technologies of rare and rare earth metals mining due to high hardness of related ores. Coatings for electrodes, produced by extrusion of self-propagating high temperature synthesis (SHS) products from hard-alloyed materials with nanosized structure, for further application in processes of electrospark alloying and deposition were studied in this work. The results of microstructure and properties of deposited layers, interaction of support with SHS produced electrodes, comparison of frictional properties of obtained materials as well as some industrial testing results are presented in this work.