EFFECT OF STRUCTURAL CONDITION OF CHROMIUM ON OXIDATION RESISTANCE OF COMPOSITE POWDER BASED ON β2-FeAl REINFORCED WITH Al2O3 INCLUSIONS

A. I. Letsko; T. L. Talako; N. M. Parnitsky

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EFFECT OF STRUCTURAL CONDITION OF CHROMIUM ON OXIDATION RESISTANCE OF COMPOSITE POWDER BASED ON β2-FeAl REINFORCED WITH Al2O3 INCLUSIONS

A. I. Letsko, T. L. Talako, N. M. Parnitsky

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Abstract

The results of studies of effect of structural state of chromium in the composite SHS-powder FeAl(Cr)/Al₂O₃ on its resistance to oxidation are presented. To study the possibility of alloying of mono-aluminide iron with chromium, the synthesis reaction mixture containing a source of chromium as chromium oxide powders or alloy PХ-30 were used. Powders were prepared by self-propagating mechanoactivated high-temperature synthesis (MASHS). Cyclic oxidation tests were conducted at a temperature of 700–1000°C in an air atmosphere for 2 hours. In the case of alloying the intermetallic alloy PX-30, the resultant powder exhibits a greater weight gain in contrast to powders prepared from a reaction mixture comprising a chromium oxide in which chromium is not only alloyed aluminide but is present in a free state.

Keywords

aluminide iron alloyed chromium, composite powder, reaction mixture, mechanoactivated high-temperature synthesis (MASHS)

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ISSN 1561-8358 (Print)
ISSN 2524-244X (Online)

Proceedings of the National Academy of Sciences of Belarus. Physical-technical series

EFFECT OF STRUCTURAL CONDITION OF CHROMIUM ON OXIDATION RESISTANCE OF COMPOSITE POWDER BASED ON β2-FeAl REINFORCED WITH Al2O3 INCLUSIONS

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Abstract

Keywords

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Proceedings of the National Academy of Sciences of Belarus. Physical-technical series

EFFECT OF STRUCTURAL CONDITION OF CHROMIUM ON OXIDATION RESISTANCE OF COMPOSITE POWDER BASED ON β2-FeAl REINFORCED WITH Al2O3 INCLUSIONS

Full Text:

Abstract

Keywords

About the Authors

References

Review

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