Preparation of calcium pyrophosphate glass-ceramics containing Nb2O5

Hirotaka MAEDA; Tomohiro MIYAJIMA; Sungho LEE; Akiko OBATA; Kyosuke UEDA; Takayuki NARUSHIMA; Toshihiro KASUGA

doi:10.2109/jcersj2.122.122

Regular Issue: Note

Preparation of calcium pyrophosphate glass-ceramics containing Nb₂O₅

Hirotaka MAEDA, Tomohiro MIYAJIMA, Sungho LEE, Akiko OBATA, Kyosuke UEDA, Takayuki NARUSHIMA, Toshihiro KASUGA

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

JOURNAL FREE ACCESS

2014 Volume 122 Issue 1421 Pages 122-124

DOI https://doi.org/10.2109/jcersj2.122.122

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Abstract

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.

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