Novel machinable calcium phosphate/CaTiO3 composites

Celaletdin Ergun

doi:10.1016/j.ceramint.2010.11.025

Novel machinable calcium phosphate/CaTiO₃ composites

Celaletdin Ergun^*

^*Corresponding author for this work

Department of Mechanical Engineering

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

11 Citations (Scopus)

Abstract

Hydroxylapatite/CaTiO₃ and tricalcium phosphate/CaTiO ₃ composites were prepared by pressureless air sintering and characterized in terms of phase stability, microstructure and pole drilling for their suitability for machining. In hydroxylapatite/CaTiO₃ composites, Ti incorporation into the apatite structure caused lattice shrinkage and eventual decomposition of the hydroxylapatite associated with the formation of α-tricalcium phosphate during sintering at 1100 °C. Later, α-tricalcium phosphate disappeared at 1300 °C, possibly reacting with CaTiO₃ at the expense of both phases. On the other hand, tricalcium phosphate/CaTiO₃ composites were thermally stable up to 1100 °C insuring a weak interface between the components, which is one of the requirements for machinability in ceramic composites. Drilling tests also verified their suitability for machining.

Original language	English
Pages (from-to)	1143-1146
Number of pages	4
Journal	Ceramics International
Volume	37
Issue number	3
DOIs	https://doi.org/10.1016/j.ceramint.2010.11.025
Publication status	Published - Apr 2011

Keywords

CaTiO
Hydroxylapatite
Machinable ceramics
Tricalcium phosphate

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10.1016/j.ceramint.2010.11.025

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title = "Novel machinable calcium phosphate/CaTiO3 composites",

abstract = "Hydroxylapatite/CaTiO3 and tricalcium phosphate/CaTiO 3 composites were prepared by pressureless air sintering and characterized in terms of phase stability, microstructure and pole drilling for their suitability for machining. In hydroxylapatite/CaTiO3 composites, Ti incorporation into the apatite structure caused lattice shrinkage and eventual decomposition of the hydroxylapatite associated with the formation of α-tricalcium phosphate during sintering at 1100 °C. Later, α-tricalcium phosphate disappeared at 1300 °C, possibly reacting with CaTiO3 at the expense of both phases. On the other hand, tricalcium phosphate/CaTiO3 composites were thermally stable up to 1100 °C insuring a weak interface between the components, which is one of the requirements for machinability in ceramic composites. Drilling tests also verified their suitability for machining.",

keywords = "CaTiO, Hydroxylapatite, Machinable ceramics, Tricalcium phosphate",

author = "Celaletdin Ergun",

year = "2011",

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doi = "10.1016/j.ceramint.2010.11.025",

language = "English",

volume = "37",

pages = "1143--1146",

journal = "Ceramics International",

issn = "0272-8842",

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number = "3",

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T1 - Novel machinable calcium phosphate/CaTiO3 composites

AU - Ergun, Celaletdin

PY - 2011/4

Y1 - 2011/4

N2 - Hydroxylapatite/CaTiO3 and tricalcium phosphate/CaTiO 3 composites were prepared by pressureless air sintering and characterized in terms of phase stability, microstructure and pole drilling for their suitability for machining. In hydroxylapatite/CaTiO3 composites, Ti incorporation into the apatite structure caused lattice shrinkage and eventual decomposition of the hydroxylapatite associated with the formation of α-tricalcium phosphate during sintering at 1100 °C. Later, α-tricalcium phosphate disappeared at 1300 °C, possibly reacting with CaTiO3 at the expense of both phases. On the other hand, tricalcium phosphate/CaTiO3 composites were thermally stable up to 1100 °C insuring a weak interface between the components, which is one of the requirements for machinability in ceramic composites. Drilling tests also verified their suitability for machining.

AB - Hydroxylapatite/CaTiO3 and tricalcium phosphate/CaTiO 3 composites were prepared by pressureless air sintering and characterized in terms of phase stability, microstructure and pole drilling for their suitability for machining. In hydroxylapatite/CaTiO3 composites, Ti incorporation into the apatite structure caused lattice shrinkage and eventual decomposition of the hydroxylapatite associated with the formation of α-tricalcium phosphate during sintering at 1100 °C. Later, α-tricalcium phosphate disappeared at 1300 °C, possibly reacting with CaTiO3 at the expense of both phases. On the other hand, tricalcium phosphate/CaTiO3 composites were thermally stable up to 1100 °C insuring a weak interface between the components, which is one of the requirements for machinability in ceramic composites. Drilling tests also verified their suitability for machining.

KW - CaTiO

KW - Hydroxylapatite

KW - Machinable ceramics

KW - Tricalcium phosphate

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JO - Ceramics International

JF - Ceramics International

IS - 3

ER -

Novel machinable calcium phosphate/CaTiO₃ composites

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Keywords

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