Phosphate precipitation at surface of bioactive glasses

KH Karlsson, Mikko Hupa, R Backman

    Research output: Contribution to journalArticleScientificpeer-review


    The bioactivity of low silica glasses is contributed to the surface layer of highly hydrated silica gel formed in vivo. Phosphate precipitation in and at time gel is a complex process involving amorphous and metastable precursors to hydroxyapatite (HAP). In the gel the pH value increases towards time glass, while the molar Ca/P ratio decreases going from 1.5 close to bone to 1 at glass surface. In the present paper time formation of different calcium phosphate compounds is calculated as function of pH.
    Original languageUndefined/Unknown
    Pages (from-to)219–222
    Number of pages4
    JournalKey Engineering Materials
    Publication statusPublished - 2000
    MoE publication typeA1 Journal article-refereed

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