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 |
|---|---|
| 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
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Yoshimura, M., Ohji, T., Sando, M., Choa, Y. H., Sekino, T., & Niihara, K. (1998). Oxidation-induced strengthening and toughening behavior in micro- and nano-composites of Y2O3/SiC system. Materials Letters, 35(3-4), 139-143. https://doi.org/10.1016/S0167-577X(97)00253-X