Macrochanneled tetragonal zirconia polycrystals coated by a calcium phosphate layer

Young Hag Koh; Hae Won Kim; Hyoun Ee Kim; John W. Halloran

doi:10.1111/j.1151-2916.2003.tb03603.x

Macrochanneled tetragonal zirconia polycrystals coated by a calcium phosphate layer

Young Hag Koh, Hae Won Kim, Hyoun Ee Kim, John W. Halloran

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

9 Citations (Scopus)

Abstract

A coextrusion process was used to fabricate three-directionally macrochanneled tetragonal zirconia polycrystals (TZP) with a calcium phosphate coating layer. The three-directionally connected structure was built by a unique alignment and a lamination of the TZP surrounded by calcium phosphate and carbon black filaments. After a thermal treatment (binder burnout and sintering), a 52 vol% array of 290 μm, three-directionally connected macrochannels, which were clad on the inside with bioactive calcium phosphate, had formed on the sintered TZP body. For a comparison, porous calcium phosphate with a similar structure was also fabricated. The compressive strength (96 MPa) of the three-directionally macrochanneled TZP with a bioactive calcium phosphate layer was much higher than that (24 MPa) of the three-directionally macrochanneled calcium phosphate.

Original language	English
Pages (from-to)	2027-2030
Number of pages	4
Journal	Journal of the American Ceramic Society
Volume	86
Issue number	12
DOIs	https://doi.org/10.1111/j.1151-2916.2003.tb03603.x
Publication status	Published - 2003 Dec
Externally published	Yes

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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abstract = "A coextrusion process was used to fabricate three-directionally macrochanneled tetragonal zirconia polycrystals (TZP) with a calcium phosphate coating layer. The three-directionally connected structure was built by a unique alignment and a lamination of the TZP surrounded by calcium phosphate and carbon black filaments. After a thermal treatment (binder burnout and sintering), a 52 vol% array of 290 μm, three-directionally connected macrochannels, which were clad on the inside with bioactive calcium phosphate, had formed on the sintered TZP body. For a comparison, porous calcium phosphate with a similar structure was also fabricated. The compressive strength (96 MPa) of the three-directionally macrochanneled TZP with a bioactive calcium phosphate layer was much higher than that (24 MPa) of the three-directionally macrochanneled calcium phosphate.",

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AU - Kim, Hae Won

AU - Kim, Hyoun Ee

AU - Halloran, John W.

PY - 2003/12

Y1 - 2003/12

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Macrochanneled tetragonal zirconia polycrystals coated by a calcium phosphate layer

Abstract

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