Novel machinable calcium phosphate/CaTiO3 composites

Celaletdin Ergun

doi:10.1016/j.ceramint.2010.11.025

Novel machinable calcium phosphate/CaTiO₃ composites

Celaletdin Ergun^*

^*Bu çalışma için yazışmadan sorumlu yazar

Makina Mühendisliği Bölümü

Araştırma sonucu: Dergiye katkı › Makale › bilirkişi

11 Atıf (Scopus)

Özet

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.

Orijinal dil	İngilizce
Sayfa (başlangıç-bitiş)	1143-1146
Sayfa sayısı	4
Dergi	Ceramics International
Hacim	37
Basın numarası	3
DOI'lar	https://doi.org/10.1016/j.ceramint.2010.11.025
Yayın durumu	Yayınlandı - Nis 2011

Finansman

This work is partially supported by the Scientific & Technological Research Council of Turkey-BIDEB program. The author thanks to Prof. John W. Halloran (Department of Materials Science and Engineering, the University of Michigan, Ann Arbor, USA) for his valuable contributions.

Finansörler
Scientific & Technological Research Council

Belgeye Erişim

10.1016/j.ceramint.2010.11.025

Diğer Dosyalar ve Linkler

Link to publication in Scopus

Alıntı Yap

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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",

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AU - Ergun, Celaletdin

PY - 2011/4

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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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