Effect of High Boron Additive Content on SPS-Consolidation and Properties of Commercial Silicon Carbide Powder

Consolidation of commercial silicon carbide powder was performed by means of spark plasma sintering. It is shown that mechanical preactivation is a promising method for introducing a high content of boron additives into silicon carbide. The effect of the boron-additive amount on sintering, microstru...

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Bibliographic Details
Published in:Glass and ceramics 2018-07, Vol.75 (3-4), p.133-138
Main Authors: Modin, S. Yu, Popova, N. A., Lebedeva, Yu. E., Chainikova, A. S., Grashchenkov, D. V., Osin, I. V., Lemeshev, D. O.
Format: Article
Language:English
Subjects:
Additives
Boron
Building materials
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Commercial buildings
Composites
Consolidation
Crack propagation
Gas turbine engines
Gas turbines
Glass
Hardness (Materials)
Ionizing radiation
Materials Science
Natural Materials
Nuclear reactors
Plasma sintering
Powders (Particulate matter)
Science for Ceramic Production
Silicon
Silicon carbide
Silicon carbides
Sintering
Spark plasma sintering
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Summary:Consolidation of commercial silicon carbide powder was performed by means of spark plasma sintering. It is shown that mechanical preactivation is a promising method for introducing a high content of boron additives into silicon carbide. The effect of the boron-additive amount on sintering, microstructure, and properties of the ceramic material was studied. A ceramic showing promise for use as a structural material in nuclear reactors and gas-turbine engines was obtained on the basis of silicon carbide with boron weight content 10%, density 3.12 g/cm 3 , hardness 31.9 GPa, and crack resistance 5.65 MPa·m 1/2 .
ISSN:0361-7610
1573-8515
DOI:10.1007/s10717-018-0042-5