Abstract
The paper presents the research results on produsing by the method of liquid-phase self-propagating high-temperature synthesis (SHS) the composite metal-matrix alloys intended for the obtaining of wear-resistant coatings by electric spark deposition (ESD). Oxides NiO, Cr2O3 and mineral concentrate ZrO2 were used as a melting charge. Alloys based on the Ni-Al system with aluminides of complex composition containing Cr and Zr were obtained by means of the alumothermic SHS reaction. Wear-resistant coatings were formed on steel 45 by the ESD method by means of the newly obtained alloys,. The maximum wear resistance of the coatings was obtained using the alloys containing Cr (wt% 18) and Zr (wt% 1.9).
Highlights
One of the main trends in the development of modern materials science is the production of new composite materials designed to improve the operational properties of various parts of machines and mechanisms
The use of oxides [7] and mineral concentrates in the melt charge at liquidphase SHS significantly increases the economic feasibility of the process of obtaining new anode materials for electric spark deposition (ESD)
The aim of this research work is to obtain composite materials based on Ni-Al system intended to be used for the formation of the ESD wear resistant coatings on steel
Summary
One of the main trends in the development of modern materials science is the production of new composite materials designed to improve the operational properties of various parts of machines and mechanisms. Are more and more often used worldwide for obtaining coatings These methods include electric spark deposition (ESD), based on the electric spark erosion process between electrodes (cathode and anode) [1, 2]. The powder metallurgy method with all its advantages has a significant drawback - high cost of production technology In this respect self-propagating high-temperature synthesis (SHS) is advanced and promising method of obtaining anode materials for ESD [3, 4]. The use of oxides [7] and mineral concentrates in the melt charge at liquidphase SHS significantly increases the economic feasibility of the process of obtaining new anode materials for ESD. The aim of this research work is to obtain composite materials based on Ni-Al system intended to be used for the formation of the ESD wear resistant coatings on steel
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