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- Article name
- High-temperature composite materials based on niobium obtained by the powder metallurgy method: properties, application (Part II) (Review)
- Authors
- SHCHETANOV B. V., , shetanov@mail.ru, All-Russian Scientific Research Institute of Aviation Materials, Moscow, Russia
SEVOSTYANOV N. V., , kolia-phone@mail.ru, All-Russian Scientific Research Institute of Aviation Materials, Moscow, Russia
BURKOVSKAYA N. P., , burkovskaya.n@gmail.ru, All-Russian Scientific Research Institute of Aviation Materials, Moscow, Russia
DMITRIEVA V. V., , murasheva_v_v@mail.ru, All-Russian Scientific Research Institute of Aviation Materials, Moscow, Russia
- Keywords
- niobium / niobium based composite materials / niobium-silicide based in-situ composites / alloying of solid solution / spark plasma sintering (SPS) / dispersion hardening / heat resistance / powder metallurgy / additive technologies
- Year
- 2021 Issue 1 Pages 27 - 34
- Code EDN
- Code DOI
- 10.52190/2073-2562_2021_1_27
- Abstract
- In the second part of the review article, methods of manufacturing high-temperature composite materials based on niobium are presented. Compared with traditional casting technologies, methods of making niobium materials from powders have become more common. The influence of alloying on the mechanical properties of high-temperature niobium composite materials obtained by casting, in particular, fracture toughness, which is an important characteristic for assessing the practical suitability of the materials being developed, in particular low-plastic materials, is presented. The problem of heat resistance of niobium-based materials is considered. Since niobium itself does not have the ability to form protective oxide films on the surface, and materials based on it are extremely strongly oxidized at temperatures above 500 оC, it becomes necessary to increase their resistance to oxidation or develop protective coatings. The ways of increasing the resistance to oxidation due to the use of alloying elements Al, Cr, Ti, Hf, and Sn, Ge and B, as additives to the solid solution of niobium are shown. Thermal protective coatings for niobium-based materials are described. The research results presented in the review allow developers of high-temperature composite materials based on niobium to give a general idea of the current scientific research in this direction.
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