Shock-Wave Synthesis and HPHT Sintering of Cubic Silicon Nitride

Journal Article · Fri Jul 28 00:00:00 EDT 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2263533· OSTI ID:20875684

Yunoshev, A S; Silvestrov, V V ^[1]; Kalinin, A A; Pal'yanov, Yu N ^[2]

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1. Lavrentyev Institute of Hydrodynamics, Lavrentyev Av., 15, Novosibirsk 630090 (Russian Federation)
2. Institute of Mineralogy and Petrography, Koptyug Av., 3, Novosibirsk 630090 (Russian Federation)

We have used the shock-wave method to synthesize the high-pressure cubic phase of silicon nitride. To consolidate the received nano-powder into the bulk sample, the special high-quality HPHT apparatus was used. As a result, we have obtained bulk samples of cubic silicon nitride up to 6 mm in size. The Vickers microhardness of this superhard material equals 30-50 GPa, which significantly exceeds the data in other investigations.

• OSTI ID: 20875684
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 845; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CUBIC LATTICES
MICROHARDNESS
POWDERS
PRESSURE DEPENDENCE
PRESSURE RANGE GIGA PA
SHOCK WAVES
SILICON NITRIDES
SINTERING
SYNTHESIS
TEMPERATURE DEPENDENCE