Rietveld Studies on Silicon Substituted Hydroxyapatite

Shuo Zou; Jie Huang; Serena Best; William Bonfield

doi:10.4028/www.scientific.net/KEM.309-311.113

Paper Titles

Novel Calcium Phosphate Ceramics: The Remarkable Promoting Action on the Differentiation of the Normal Human Osteoblasts
p.97

Sintering Effect on Mechanical Properties of Composites of Hydroxyapatite Lanthanum Oxide (HA-La₂O₃)
p.101

Osteoblast Proliferation and Morphology Analysis on Laser Modified Hydroxyapatite Surfaces: Preliminary Results
p.105

Adhesion, Proliferation and Morphology of Osteoblasts Cultured on Apatite Ceramics with Preferred Orientation to a-Plane
p.109

Rietveld Studies on Silicon Substituted Hydroxyapatite
p.113

Silicon Dissolution from Microporous Silicon Substituted Hydroxyapatite and its Effect on Osteoblast Behaviour
p.117

The Effect Orthosilicic Acid on Collagen Type I, Alkaline Phosphatase and Osteocalcin mRNA Expression in Human Bone-Derived Osteoblasts In Vitro
p.121

Preparation of Carbonate Apatite Monolith by Treatment of the Set Gypsum Containing Calcite in Trisodium Phosphate Solution
p.125

Preparation of Hollow and Spherical β-Calcium Orthophosphate Agglomerates: Effect of Organic Compound Addition to the Spraying Solution
p.129

HomeKey Engineering MaterialsKey Engineering Materials Vols. 309-311Rietveld Studies on Silicon Substituted...

Rietveld Studies on Silicon Substituted Hydroxyapatite

Abstract:

Silicon-substituted hydroxyapatite (SiHA) attracts particular interest due its enhanced bioactivity compared with pure hydroxyapatite. In this study we seek to clarify the effects on the lattice parameters of both composition and sintering temperature in experimentally-produced HA and 0.8wt% SiHA, 1.5wt% SiHA and 2.0wt% SiHA sintered at 800oC and 1200oC. X ray diffraction was used to determine the phase purity and crystallographic structure. We found that while the c parameter increased with increasing silicon concentration, the a parameter decreased with initial silicon incorporation then recovered with further increases in silicon incorporation. The calcium (2) channel expanded with silicon incorporation while tetrahedron distortion index (TDI) and the radius of the P channel showed a similar dependence on silicon content as the a parameter.

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Key Engineering Materials (Volumes 309-311)

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113-116

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.309-311.113

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Online since:

May 2006

Authors:

Shuo Zou, Jie Huang, Serena Best, William Bonfield

Keywords:

Lattice Parameter, Rietveld Refinement, Silicon Substituted Hydroxyapatite, X-Ray Diffraction (XRD)

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