The influence of calcium to phosphate ratio on the nucleation and crystallization of apatite glass-ceramics

The nucleation and crystallization behavior of a series of glasses based on 4.5SiO2-3Al2O3-YP2O5-3CaO-1.51CaF2 was studied. The parameter Y was varied to give calcium to phosphate ratios between one and two. All of the glasses studied crystallized firstly to fluorapatite (Ca5PO4)3F). The glass with...

Full description

Saved in:
Bibliographic Details
Published inJournal of materials science. Materials in medicine Vol. 12; no. 5; pp. 461 - 469
Main Authors Clifford, A, Hill, R, Rafferty, A, Mooney, P, Wood, D, Samuneva, B, Matsuya, S
Format Journal Article
LanguageEnglish
Published United States Springer Nature B.V 01.05.2001
Subjects
Biomedical materials
Glass
Materials science
Online AccessGet full text

Cover

More Information
Summary:The nucleation and crystallization behavior of a series of glasses based on 4.5SiO2-3Al2O3-YP2O5-3CaO-1.51CaF2 was studied. The parameter Y was varied to give calcium to phosphate ratios between one and two. All of the glasses studied crystallized firstly to fluorapatite (Ca5PO4)3F). The glass with a calcium to phosphate ratio of 1.67, corresponding to apatite, bulk nucleated to give fluorapatite (FAP). The glasses with calcium : phosphate ratios either less than that of apatite, or greater than that of apatite all exhibited surface nucleation of FAP. However, following a nucleation hold of one hour at approximately 50 K above the glass transition temperature these glasses exhibited bulk nucleation of FAP.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ObjectType-Article-1
ObjectType-Feature-2
ISSN:0957-4530
1573-4838
DOI:10.1023/A:1011213406951