Mechanical parameters of strontium doped hydroxyapatite sintered using microwave and conventional methods

Declan J. Curran; Thomas J. Fleming; Mark R. Towler; Stuart Hampshire

doi:10.1016/j.jmbbm.2011.07.005

Mechanical parameters of strontium doped hydroxyapatite sintered using microwave and conventional methods

Declan J. Curran, Thomas J. Fleming, Mark R. Towler, Stuart Hampshire

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Research output: Contribution to journal › Article › peer-review

Abstract

The effects of ion substitution in hydroxyapatite (HA) on crystal structure and lattice stability is investigated in the green state and post sintering. The effects of ion incorporation on the biaxial flexural strength and hardness are also investigated. Sintering is carried out at 1200 °C using comparative conventional and microwave regimes. Post sintering, the effects of ion incorporation manifest as an increase in the lattice d-spacings and a reduction of the crystallite size. Some HA decomposition occurs with β-TCP stabilisation in conventional sintering (CS), but this phase is destabilised during microwave sintering (MS), generating α-TCP. Conventional sintering (CS) allows higher densification in the undoped samples. Overall, for the Sr-doped compositions, the MS samples retain higher amounts of HA and experience higher density levels compared to the CS samples.

Original language	English
Pages (from-to)	2063-2073
Number of pages	11
Journal	Journal of the Mechanical Behavior of Biomedical Materials
Volume	4
Issue number	8
DOIs	https://doi.org/10.1016/j.jmbbm.2011.07.005
Publication status	Published - Nov 2011

Keywords

Decomposition
Density
Hydroxyapatite
Mechanical properties
Microwave
Scherrer
Sintering
Strontium

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10.1016/j.jmbbm.2011.07.005

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title = "Mechanical parameters of strontium doped hydroxyapatite sintered using microwave and conventional methods",

abstract = "The effects of ion substitution in hydroxyapatite (HA) on crystal structure and lattice stability is investigated in the green state and post sintering. The effects of ion incorporation on the biaxial flexural strength and hardness are also investigated. Sintering is carried out at 1200 °C using comparative conventional and microwave regimes. Post sintering, the effects of ion incorporation manifest as an increase in the lattice d-spacings and a reduction of the crystallite size. Some HA decomposition occurs with β-TCP stabilisation in conventional sintering (CS), but this phase is destabilised during microwave sintering (MS), generating α-TCP. Conventional sintering (CS) allows higher densification in the undoped samples. Overall, for the Sr-doped compositions, the MS samples retain higher amounts of HA and experience higher density levels compared to the CS samples.",

keywords = "Decomposition, Density, Hydroxyapatite, Mechanical properties, Microwave, Scherrer, Sintering, Strontium",

author = "Curran, {Declan J.} and Fleming, {Thomas J.} and Towler, {Mark R.} and Stuart Hampshire",

note = "Published by Elsevier Ltd.",

year = "2011",

month = nov,

doi = "10.1016/j.jmbbm.2011.07.005",

language = "English",

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journal = "Journal of the Mechanical Behavior of Biomedical Materials",

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T1 - Mechanical parameters of strontium doped hydroxyapatite sintered using microwave and conventional methods

AU - Curran, Declan J.

AU - Fleming, Thomas J.

AU - Towler, Mark R.

AU - Hampshire, Stuart

N1 - Published by Elsevier Ltd.

PY - 2011/11

Y1 - 2011/11

N2 - The effects of ion substitution in hydroxyapatite (HA) on crystal structure and lattice stability is investigated in the green state and post sintering. The effects of ion incorporation on the biaxial flexural strength and hardness are also investigated. Sintering is carried out at 1200 °C using comparative conventional and microwave regimes. Post sintering, the effects of ion incorporation manifest as an increase in the lattice d-spacings and a reduction of the crystallite size. Some HA decomposition occurs with β-TCP stabilisation in conventional sintering (CS), but this phase is destabilised during microwave sintering (MS), generating α-TCP. Conventional sintering (CS) allows higher densification in the undoped samples. Overall, for the Sr-doped compositions, the MS samples retain higher amounts of HA and experience higher density levels compared to the CS samples.

AB - The effects of ion substitution in hydroxyapatite (HA) on crystal structure and lattice stability is investigated in the green state and post sintering. The effects of ion incorporation on the biaxial flexural strength and hardness are also investigated. Sintering is carried out at 1200 °C using comparative conventional and microwave regimes. Post sintering, the effects of ion incorporation manifest as an increase in the lattice d-spacings and a reduction of the crystallite size. Some HA decomposition occurs with β-TCP stabilisation in conventional sintering (CS), but this phase is destabilised during microwave sintering (MS), generating α-TCP. Conventional sintering (CS) allows higher densification in the undoped samples. Overall, for the Sr-doped compositions, the MS samples retain higher amounts of HA and experience higher density levels compared to the CS samples.

KW - Decomposition

KW - Density

KW - Hydroxyapatite

KW - Mechanical properties

KW - Microwave

KW - Scherrer

KW - Sintering

KW - Strontium

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SN - 1751-6161

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SP - 2063

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JO - Journal of the Mechanical Behavior of Biomedical Materials

JF - Journal of the Mechanical Behavior of Biomedical Materials

IS - 8

ER -

Mechanical parameters of strontium doped hydroxyapatite sintered using microwave and conventional methods

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Keywords

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