Journal
MATERIALS LETTERS
Volume 164, Issue -, Pages 68-71Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2015.09.043
Keywords
Structural; SiC ceramic; Sintering; Nanoparticles; X-ray techniques
Funding
- Ministry of Education and Science of Serbia [45012]
- Slovenian-Serbian bilateral collaboration under the project 'Minerals as precursors for advanced technologies' [BI-RS/12-13-019]
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Cubic SiC nano-powder particles were synthesized by a sal-gel process with an average grains size of 9.5 nm which were subsequently densified by using a high-pressure anvil-type with hollows apparatus at a pressure of 4 GPa in order to obtain nanostructured bulk ceramic compacts. The density obtained was >98% at a sintering temperature of 1500 degrees C with a holding time of only 60s. The calculation of the average crystallite size (D) was performed on the basis of the full width at half maximum intensity (FWHM) of the XRD peaks. Williamson-Hall plots were used to separate the effect of the size and strain in the nanostructured SiC compacts. Sintered nanostructured SiC ceramic exhibits hardness and elastic modulus of 32-420 GPa respectively. Wear properties were investigated and the average value of dynamic friction coefficient obtained was 0.16. (C) 2015 Elsevier B.V. All rights reserved.
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