Synthesis of Complex-Alloyed Nickel Aluminides from Oxide Compounds by Aluminothermic Method

Gostishchev, V. V.; Ri, E. H.; Ri, Hosen; Kim, E. D.; Ermakov, M. A.; Khimukhin, S. N.; Деев, В. Б.; Прусов, Е. С.

doi:10.3390/met8060439

Cited by 8 publications

(2 citation statements)

References 24 publications

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“…One of the promising methods for producing composite alloys is self-propagating hightemperature synthesis (SHS) [11][12][13][14][15][16][17][18][19][20]. The use of this technology to solve the set tasks is of interest both from the side of science and from the side of production.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a Composite Alloy Based on Ore Concentrate and Oxide Compounds

Kim

Ermakov

et al. 2021

MSF

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The conditions for the synthesis of Al-Cr-W alloys during the aluminothermic reduction of a mineral tungsten concentrate - scheelite were considered. The alloys were identified as an aluminum matrix by the methods of elemental and X-ray phase analyzes. It is shown that the alloy synthesized from scheelite concentrate contains small amounts of iron and oxygen impurities (1.2 wt. %). It has been established that the alloys have a composite structure: inclusions of continuously solid solutions based on chromium and tungsten, as well as chromium aluminides Al3(Cr, W, Fe)2, which have increased microhardness values (12.9 GPa) are distributed in the aluminum matrix.

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Section: Introductionmentioning

confidence: 99%

Synthesis of a Composite Alloy Based on Ore Concentrate and Oxide Compounds

Kim

Ermakov

et al. 2021

MSF

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“…Alloys based on nickel aluminides are used for doping and modifying non-ferrous alloys [2,3]. The additional content of rare and rare-earth metals in alloys increases significantly the efficiency of modification.…”

Section: Introductionmentioning

confidence: 99%

Obtaining of Composite Alloys Based on Nickel Aluminides with Rare Metals

Khimukhin

Kim

2021

KEM

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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.

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