Abstract
Effects of oxidation on mechanical properties has been investigated for micro- and nano-composites of Y2O3-SiC systems. SiC particles with mean sizes of 5 μm and 300 nm were dispersed in the former and latter material, respectively. The room temperature fracture strength and toughness increased after oxidation around 900-1000°C for both the composites; the nanocomposite showed much larger increases than the micro-composite. The micro structural observations and the residual stress measurements revealed that these improvements are mainly due to the surface compressive stress generated by the oxidized SiC particles.
Original language | English |
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Pages (from-to) | 139-143 |
Number of pages | 5 |
Journal | Materials Letters |
Volume | 35 |
Issue number | 3-4 |
DOIs | |
Publication status | Published - 1998 May |
Keywords
- Fracture strength
- Heat treatment
- Nanocomposites
- Silicon carbide
- Yttrium oxide
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering