Structure and properties of hot-pressed materials based on AlB12C2

The results are presented on the investigation of the structure and mechanical properties of hot-pressed materials based on AlB 12 C 2 powders of sizes 50–150 nm. It is shown that the consolidated materials having mechanical properties comparable with boron carbide may be produced at essentially low...

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Bibliographic Details
Published in:Journal of superhard materials 2017-05, Vol.39 (3), p.216-219
Main Authors: Prikhna, T. A., Barvitskyi, P. P., Dub, S. N., Muratov, V. B., Karpets, M. V., Moshchil’, V. E., Ponomarev, S. S., Vasil’ev, A. A.
Format: Article
Language:English
Subjects:
Alloys
Boron carbide
Chemistry
Chemistry and Materials Science
Compressing
Consolidation
Fracture toughness
Hardness
Heating rate
Letters to the Editor
Mechanical properties
Physical Chemistry
Sintering
Stoichiometry
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Summary:The results are presented on the investigation of the structure and mechanical properties of hot-pressed materials based on AlB 12 C 2 powders of sizes 50–150 nm. It is shown that the consolidated materials having mechanical properties comparable with boron carbide may be produced at essentially lower (by 270–300°C) sintering temperatures. It has been established that the heating rate at compressing affects the stoichiometry of the impurity phase containing Al, B, O, which define the difference in mechanical properties of the materials (a decrease of the heating rate results in the insignifical decrease of the material hardness and increase of the fracture toughness).
ISSN:1063-4576
1934-9408
DOI:10.3103/S1063457617030108