Toughening and strengthening of translucent alumina

Toughening and strengthening of translucent alumina

Translucent alumina with anisotropic-grained microstructure was fabricated utilizing a small amount of glass-forming impurities and the hot isostatic pressing (HIP) method. Its total forward transmission at 600 nm is 72% (1 mm thickness), and bending strength and fracture toughness are estimated to...

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Veröffentlicht in:Journal of the Ceramic Society of Japan 2009, Vol.117(1369), pp.1052-1054
Hauptverfasser: YAMASHITA, Isao, NAGAYAMA, Hitoshi, SHINOZAKI, Naoki, TSUKUMA, Koji
Format: Artikel
Sprache:eng
Schlagworte:
Bending strength
Fracture toughness
Hot isostatic pressing (HIP)
Translucent alumina
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Beschreibung
Zusammenfassung:Translucent alumina with anisotropic-grained microstructure was fabricated utilizing a small amount of glass-forming impurities and the hot isostatic pressing (HIP) method. Its total forward transmission at 600 nm is 72% (1 mm thickness), and bending strength and fracture toughness are estimated to be 649 MPa and 9.4 MPa·m0.5, respectively. Bimodal structure composed of elongated anisotropic-grain and fine equi-axis grain is responsible for the enhancement of mechanical properties.
ISSN:1882-0743
1348-6535
DOI:10.2109/jcersj2.117.1052