Structure and Mechanical Properties of Hot-Pressed Composite Ceramics W2B5–ZrB2–SiC–B4C

A high-density ceramic material (97% of theoretical density) was obtained by hot pressing of ball-milled powders W 2 B 5 , ZrB 2 , SiC and B 4 C with holding for 15 minutes at a temperature of 1850°C and a pressure of 30 MPa in an argon atmosphere. The structure and composition of the material were...

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Bibliographic Details
Published in:Refractories and industrial ceramics 2021-07, Vol.62 (2), p.202-207
Main Authors: Nesmelov, D. D., Ordan’yan, S. S., Udalov, Yu. P.
Format: Article
Language:English
Subjects:
Argon
Ball milling
Bend strength
Boron carbide
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Crack propagation
Diamond pyramid hardness
Glass
Hot pressing
Materials Science
Mechanical properties
Natural Materials
Refractory materials
Silicon carbide
Theoretical density
Zirconium compounds
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Summary:A high-density ceramic material (97% of theoretical density) was obtained by hot pressing of ball-milled powders W 2 B 5 , ZrB 2 , SiC and B 4 C with holding for 15 minutes at a temperature of 1850°C and a pressure of 30 MPa in an argon atmosphere. The structure and composition of the material were investigated by x-ray diffraction, scanning electron microscopy, and energy-dispersive x-ray spectroscopy. Vickers hardness (19.3 GPa), crack resistance coefficient (5,7 MPa∙m 1/2 ) and bending strength (695 MPa) were determined.
ISSN:1083-4877
1573-9139
DOI:10.1007/s11148-021-00583-8