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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.117  No.1369 (September) (2009)  >  pp.1052-1054

Journal of the Ceramic Society of Japan
<<Previous article Vol.117  No.1369 (September) (2009)   pp.1052 - 1054 Next article>>

Toughening and strengthening of translucent alumina

Isao YAMASHITA1), Hitoshi NAGAYAMA1), Naoki SHINOZAKI1) and Koji TSUKUMA1)
1) Tokyo Research Laboratory, Tosoh Corporation

  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.


Keyword:
Translucent alumina, Fracture toughness, Bending strength, Hot isostatic pressing (HIP)

Received: June 24, 2009
Accepted: July 16, 2009 , Published online: September 01, 2009
Copyright (c) 2009 The Ceramic Society of Japan

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