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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.122  No.1421 (January) (2014)  >  pp.122-124

Journal of the Ceramic Society of Japan
<<Previous article Vol.122  No.1421 (January) (2014)   pp.122 - 124 Next article>>

Preparation of calcium pyrophosphate glass-ceramics containing Nb2O5

Hirotaka MAEDA1), Tomohiro MIYAJIMA2), Sungho LEE2), Akiko OBATA2), Kyosuke UEDA3), Takayuki NARUSHIMA3), Toshihiro KASUGA2)
1) Center for Fostering Young and Innovative Researchers, Nagoya Institute of Technology 2) Department of Frontier Materials, Nagoya Institute of Technology 3) Graduate School of Engineering, Tohoku University

New types of calcium phosphate glass-ceramics were prepared with the addition of Nb2O5 to the pyrophosphate region. The glass-ceramics contained α-Ca2P2O7, β-Ca2P2O7, and orthorhombic Nb2O5. The concentrations of Ca, P and Nb elements released from the glass-ceramics were lower than those released from glass of the same chemical composition. Apatite formed on the surface of the glass-ceramics after soaking in 1.5 simulated body fluid for 7 days. The crystal phases of the glass-ceramics improved the chemical durability and apatite forming ability of the material.


Keyword:
Calcium phosphate glass-ceramics, Niobium oxide, Chemical durability

Received: August 02, 2013
Accepted: November 14, 2013 , Published online: January 01, 2014
Copyright © 2014 The Ceramic Society of Japan

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