Obtaining of Metal-Matrix Alloys Based on Ni-Al for ESD Coatings Formation

Abstract:

The experimental results of obtaining complex-alloyed intermetallic alloys by the method of liquid-phase self-propagating high-temperature synthesis (SHS) and their subsequent use for the formation of wear-resistant coatings by the method of electrospark deposition (ESD) are submitted. Metal oxides Cr2O3, NiO, CoO and mineral concentrate containing a larger part of ZrO2 in its composition were used as a melt charge for the SHS experiments. Alloys based on Ni-Al system dopped with Cr, Zr, Co, and C were obtained. It was established that extra addition of C led to the refinement of the alloys microstructure (3-5 times). ESD coatings were formed on steel 45 using the obtained alloys as anode material. The coatings formed by using the alloys doped by Co, Zr, Cr and extra addition of C (0.4 wt%) proved to be maximum wear resistant.

• Periodical: Materials Science Forum (Volume 1083)
• Pages: 203-209
• DOI: https://doi.org/10.4028/p-to8w5b
• Online since: April 2023
• Authors: Sergey N. Khimukhin*, Sergey V. Nikolenko, L.A. Konevtsov, E.D. Kim
• Keywords: Anode, Cathode, Composite Metal-Matrix Alloys, Electrosparkdeposition, Erosion, Wear Resistance, Weight Gain

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