MECHANICAL PROPERTIES AND MICROSTRUCTURE OF SiO<sub>2</sub>-AlN COMPOSITES

WU Jie-hua; LI Bao-shun; GUO Jing-kun

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Article Navigation > Acta Materiae Compositae Sinica > 2001 > 18(1): 83-88

WU Jie-hua, LI Bao-shun, GUO Jing-kun. MECHANICAL PROPERTIES AND MICROSTRUCTURE OF SiO2-AlN COMPOSITES[J]. Acta Materiae Compositae Sinica, 2001, 18(1): 83-88.

Citation:

WU Jie-hua, LI Bao-shun, GUO Jing-kun. MECHANICAL PROPERTIES AND MICROSTRUCTURE OF SiO₂-AlN COMPOSITES[J]. Acta Materiae Compositae Sinica, 2001, 18(1): 83-88.

WU Jie-hua, LI Bao-shun, GUO Jing-kun. MECHANICAL PROPERTIES AND MICROSTRUCTURE OF SiO2-AlN COMPOSITES[J]. Acta Materiae Compositae Sinica, 2001, 18(1): 83-88.

Citation:

WU Jie-hua, LI Bao-shun, GUO Jing-kun. MECHANICAL PROPERTIES AND MICROSTRUCTURE OF SiO₂-AlN COMPOSITES[J]. Acta Materiae Compositae Sinica, 2001, 18(1): 83-88.

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MECHANICAL PROPERTIES AND MICROSTRUCTURE OF SiO₂-AlN COMPOSITES

Shanghai Institute of Ceramics, Chinese Academy of Sciences,Shanghai 200050,China

Received Date: 1999-07-28
Rev Recd Date: 1999-11-30
Publish Date: 2001-02-15

Abstract

Abstract

SiO₂-AlN composites were prepared by hot-pressing process. Mechanical properties of SiO₂ matrix can be greatly improved after incorporating AlN particles. Flexural strength and fracture toughness of SiO₂-AlN composites with 30 vol% AlN particles sintered at 1400℃ reached 200 MPa and 2.96 MPa·m^1/2 respectively. XRD analysis indicated that no chemical reaction occurred between SiO2 matrix and AlN particles suggesting that SiO₂ matrix had excellent chemical compatibility with AlN particles. Microstructure of the as-sintered composites was investigated with SEM and TEM analysis. The relationship among the phase composition and microstructure and mechanical properties was discussed.
- silica,
- aluminum nitride,
- composites,
- mechanical properties,
- microstructure
Long Abstrsct
Innovation Points