Room temperature strain rate sensitivity in precursor derived HfO2/Si-C-N(O) ceramic nanocomposites
Investigation on the room temperature strain rate sensitivity using depth sensing nanoindentation is carried out on precursor derived HfO2/Si-C-N(O) ceramic nanocomposite sintered using pulsed electric current sintering. Using constant load method the strain rate sensitivity values are estimated. Lo...
| Published in: | AIP Advances |
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| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2014-01-01
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| Online Access: | http://dx.doi.org/10.1063/1.4863537 |
| Summary: | Investigation on the room temperature strain rate sensitivity using depth sensing nanoindentation is carried out on precursor derived HfO2/Si-C-N(O) ceramic nanocomposite sintered using pulsed electric current sintering. Using constant load method the strain rate sensitivity values are estimated. Lower strain rate sensitivity of ∼ 3.7 × 10−3 is observed and the limited strain rate sensitivity of these ceramic nanocomposites is explained in terms of cluster model. It is concluded that presence of amorphous Si-C-N(O) clusters are responsible for the limited flowability in these ceramics. |
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| ISSN: | 2158-3226 |