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Mechanical and thermal properties of a Hf2[Al(Si)]4C5 ceramic prepared by in situ reaction/hot-pressing
- Source :
- Scripta Materialia. 62:427-430
- Publication Year :
- 2010
- Publisher :
- Elsevier BV, 2010.
-
Abstract
- Predominantly single-phase Hf(2)[Al(Si)(4)]C(5) ceramic hits been fabricated by an Ill Situ reaction/hot-pressing method using Al. Si and graphite its starting materials Hf(2)[Al(Si)](4)C(5) Shows comparable mechanical properties to Zr(2)[Al(Si)](4)C(5), and lower hardness and stiffness but higher strength and toughness than HfC The stiffness decreases slowly with temperature and at 1600 degrees C it remains 83% of that at ambient temperature Compared to Zr(2)[Al(Si)](4)C(5) and HfC, however, Hf(2)[Al(Si)(4)C(5) exhibits it relatively higher coefficient of thermal expansion,. all intermediate specific heat capacity and it lower thermal conductivity (C) 2009 Acta Materialia Inc Published by Elsevier Ltd. All rights reserved
- Subjects :
- Toughness
Materials science
Mechanical Engineering
Metals and Alloys
Analytical chemistry
Condensed Matter Physics
Hot pressing
Heat capacity
Thermal expansion
Carbide
Thermal conductivity
Mechanics of Materials
visual_art
visual_art.visual_art_medium
General Materials Science
Graphite
Ceramic
Composite material
Subjects
Details
- ISSN :
- 13596462
- Volume :
- 62
- Database :
- OpenAIRE
- Journal :
- Scripta Materialia
- Accession number :
- edsair.doi...........ceca587c65f0616c696dca34447f7f7b