Reaction sintering and mechanical properties of hydroxyapatite-zirconia composites with calcium fluoride additions

Hae Won Kim; Young Hag Koh; Byung Ho Yoon; Hyoun Ee Kim

doi:10.1111/j.1151-2916.2002.tb00328.x

Reaction sintering and mechanical properties of hydroxyapatite-zirconia composites with calcium fluoride additions

Hae Won Kim, Young Hag Koh, Byung Ho Yoon, Hyoun Ee Kim

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

35 Citations (Scopus)

Abstract

The effects of calcium fluoride (CaF₂) additions on the densification and mechanical properties of hydroxyapatite-zirconia composites (HA-ZrO₂) were investigated. When small amount of CaF₂ was added, the density of the composites was markedly enhanced. The reactions of HA with CaF₂, which led to the formation of fluorapatite (FA), were attributed to the observed improvements in densification. When HA-20-vol%-ZrO₂ composites were sintered, with the addition of 5 vol% of CaF₂, in air at 1300°C, the density of the specimen approach ed 98% of the theoretical value. The flexural strength and fracture toughness of the composites were also improved, as a result of the enhanced densification.

Original language	English
Pages (from-to)	1634-1636
Number of pages	3
Journal	Journal of the American Ceramic Society
Volume	85
Issue number	6
DOIs	https://doi.org/10.1111/j.1151-2916.2002.tb00328.x
Publication status	Published - 2002 Jun
Externally published	Yes

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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10.1111/j.1151-2916.2002.tb00328.x

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abstract = "The effects of calcium fluoride (CaF2) additions on the densification and mechanical properties of hydroxyapatite-zirconia composites (HA-ZrO2) were investigated. When small amount of CaF2 was added, the density of the composites was markedly enhanced. The reactions of HA with CaF2, which led to the formation of fluorapatite (FA), were attributed to the observed improvements in densification. When HA-20-vol%-ZrO2 composites were sintered, with the addition of 5 vol% of CaF2, in air at 1300°C, the density of the specimen approach ed 98% of the theoretical value. The flexural strength and fracture toughness of the composites were also improved, as a result of the enhanced densification.",

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AU - Kim, Hae Won

AU - Koh, Young Hag

AU - Yoon, Byung Ho

AU - Kim, Hyoun Ee

PY - 2002/6

Y1 - 2002/6

N2 - The effects of calcium fluoride (CaF2) additions on the densification and mechanical properties of hydroxyapatite-zirconia composites (HA-ZrO2) were investigated. When small amount of CaF2 was added, the density of the composites was markedly enhanced. The reactions of HA with CaF2, which led to the formation of fluorapatite (FA), were attributed to the observed improvements in densification. When HA-20-vol%-ZrO2 composites were sintered, with the addition of 5 vol% of CaF2, in air at 1300°C, the density of the specimen approach ed 98% of the theoretical value. The flexural strength and fracture toughness of the composites were also improved, as a result of the enhanced densification.

AB - The effects of calcium fluoride (CaF2) additions on the densification and mechanical properties of hydroxyapatite-zirconia composites (HA-ZrO2) were investigated. When small amount of CaF2 was added, the density of the composites was markedly enhanced. The reactions of HA with CaF2, which led to the formation of fluorapatite (FA), were attributed to the observed improvements in densification. When HA-20-vol%-ZrO2 composites were sintered, with the addition of 5 vol% of CaF2, in air at 1300°C, the density of the specimen approach ed 98% of the theoretical value. The flexural strength and fracture toughness of the composites were also improved, as a result of the enhanced densification.

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Reaction sintering and mechanical properties of hydroxyapatite-zirconia composites with calcium fluoride additions

Abstract

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