Obtaining of Composite Alloys Based on Nickel Aluminides with Rare Metals

Abstract:

The paper presents the research results on the production of doped composite materials by the method of out-of-furnace liquid-phase self-propagating high-temperature synthesis using oxides and mineral concentrates containing Zr and W as a charge. The positive experience of producing ingots of intermetallic alloys based on the Ni-Al system in one stage of the reduction process of joint metallothermy is shown. The use of Zr in the charge leads to grinding of microstructure of the ingots and the formation of intermetallic compounds containing Zr. The additional use of C, B₂O₃, and W in the charge results in the formation of complex borides and tungsten carbides in the ingots. Additional introduction of Cr₂O₃ into the charge is necessary for the formation of W carbides in the nickel aluminide matrix.

• Periodical: Key Engineering Materials (Volume 887)
• Pages: 73-78
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.887.73
• Online since: May 2021
• Authors: Sergey N. Khimukhin, E.D. Kim*, Ri Khosen
• Keywords: Borides, Carbides, Composite Materials, Rare Metals Zr and W

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