Influence of the Mechanical Activation of Reaction Mixture on the Formation of Microstructure of ZrB 2 –CrB Composites Obtained by Electrothermal Explosions under Pressure

A. V. Shcherbakov; V. A. Shcherbakov; V. Yu. Barinov; S. G. Vadchenko; A. V. Linde

doi:10.1007/s11148-019-00340-y

Influence of the Mechanical Activation of Reaction Mixture on the Formation of Microstructure of ZrB₂–CrB Composites Obtained by Electrothermal Explosions under Pressure

Авторлар: Shcherbakov A.V.¹, Shcherbakov V.A.¹, Barinov V.Y.¹, Vadchenko S.G.¹, Linde A.V.¹
Мекемелер:
1. Merzhanov Institute for Structural Macrokinetics and Problems of Materials Science, Russian Academy of Sciences
Шығарылым: Том 60, № 2 (2019)
Беттер: 223-226
Бөлім: Article
URL: https://journal-vniispk.ru/1083-4877/article/view/249287
DOI: https://doi.org/10.1007/s11148-019-00340-y
ID: 249287

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Аннотация

The ZrB₂–CrB composites with a ceramic bond content of 80 wt.% and a relative density of 0.85 – 0.90 were obtained by the method of electrothermal explosion under pressure. It is shown that the mechanical activation of the source powder mixture decreases its heterogeneity and increases its reactivity.We also obtained a finely divided ceramic composite with homogeneous microstructure containing needle-like ZrB₂ grains.