Highly porous titanium (Ti) scaffolds with bioactive microporous hydroxyapatite/TiO2 hybrid coating layer

Jong Hoon Lee; Hyoun Ee Kim; Young Hag Koh

doi:10.1016/j.matlet.2009.06.023

Highly porous titanium (Ti) scaffolds with bioactive microporous hydroxyapatite/TiO₂ hybrid coating layer

Jong Hoon Lee, Hyoun Ee Kim, Young Hag Koh

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

53 Citations (Scopus)

Abstract

Highly porous Ti scaffolds with a bioactive microporous hydroxyapatite (HA)/TiO₂ hybrid coating layer were fabricated using the sponge replication process and micro-arc oxidation (MAO) treatment to produce the porous Ti scaffold and hybrid coating layer, respectively. In particular, the morphology and chemical composition of the hybrid coating layer were controlled by carrying out the MAO treatment in electrolyte solutions containing various concentrations of HA, ranging from 0 to 30 wt.%. The fabricated sample showed high porosity of approximately 70 vol.% with interconnected pores and reasonably high compressive strength of 18 ± 0.3 MPa. Furthermore, the surfaces could be coated successfully with a bioactive microporous HA/TiO₂ hybrid layer. The amount of HA particles in the hybrid coating layer increased with increasing HA content in the electrolyte solution, while preserving the microporous morphology. This hybrid coating improved the osteoblastic activity of the porous Ti scaffolds significantly.

Original language	English
Pages (from-to)	1995-1998
Number of pages	4
Journal	Materials Letters
Volume	63
Issue number	23
DOIs	https://doi.org/10.1016/j.matlet.2009.06.023
Publication status	Published - 2009 Sept 30

Bibliographical note

Funding Information:
This research was supported by a grant from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy, Republic of Korea.

Keywords

Hydroxyapatite (HA)
Mechanical properties
Metals and alloys
Porosity
Titanium (Ti)

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.matlet.2009.06.023

Cite this

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title = "Highly porous titanium (Ti) scaffolds with bioactive microporous hydroxyapatite/TiO2 hybrid coating layer",

abstract = "Highly porous Ti scaffolds with a bioactive microporous hydroxyapatite (HA)/TiO2 hybrid coating layer were fabricated using the sponge replication process and micro-arc oxidation (MAO) treatment to produce the porous Ti scaffold and hybrid coating layer, respectively. In particular, the morphology and chemical composition of the hybrid coating layer were controlled by carrying out the MAO treatment in electrolyte solutions containing various concentrations of HA, ranging from 0 to 30 wt.%. The fabricated sample showed high porosity of approximately 70 vol.% with interconnected pores and reasonably high compressive strength of 18 ± 0.3 MPa. Furthermore, the surfaces could be coated successfully with a bioactive microporous HA/TiO2 hybrid layer. The amount of HA particles in the hybrid coating layer increased with increasing HA content in the electrolyte solution, while preserving the microporous morphology. This hybrid coating improved the osteoblastic activity of the porous Ti scaffolds significantly.",

keywords = "Hydroxyapatite (HA), Mechanical properties, Metals and alloys, Porosity, Titanium (Ti)",

author = "Lee, {Jong Hoon} and Kim, {Hyoun Ee} and Koh, {Young Hag}",

note = "Funding Information: This research was supported by a grant from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy, Republic of Korea.",

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AU - Lee, Jong Hoon

AU - Kim, Hyoun Ee

AU - Koh, Young Hag

N1 - Funding Information: This research was supported by a grant from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy, Republic of Korea.

PY - 2009/9/30

Y1 - 2009/9/30

N2 - Highly porous Ti scaffolds with a bioactive microporous hydroxyapatite (HA)/TiO2 hybrid coating layer were fabricated using the sponge replication process and micro-arc oxidation (MAO) treatment to produce the porous Ti scaffold and hybrid coating layer, respectively. In particular, the morphology and chemical composition of the hybrid coating layer were controlled by carrying out the MAO treatment in electrolyte solutions containing various concentrations of HA, ranging from 0 to 30 wt.%. The fabricated sample showed high porosity of approximately 70 vol.% with interconnected pores and reasonably high compressive strength of 18 ± 0.3 MPa. Furthermore, the surfaces could be coated successfully with a bioactive microporous HA/TiO2 hybrid layer. The amount of HA particles in the hybrid coating layer increased with increasing HA content in the electrolyte solution, while preserving the microporous morphology. This hybrid coating improved the osteoblastic activity of the porous Ti scaffolds significantly.

AB - Highly porous Ti scaffolds with a bioactive microporous hydroxyapatite (HA)/TiO2 hybrid coating layer were fabricated using the sponge replication process and micro-arc oxidation (MAO) treatment to produce the porous Ti scaffold and hybrid coating layer, respectively. In particular, the morphology and chemical composition of the hybrid coating layer were controlled by carrying out the MAO treatment in electrolyte solutions containing various concentrations of HA, ranging from 0 to 30 wt.%. The fabricated sample showed high porosity of approximately 70 vol.% with interconnected pores and reasonably high compressive strength of 18 ± 0.3 MPa. Furthermore, the surfaces could be coated successfully with a bioactive microporous HA/TiO2 hybrid layer. The amount of HA particles in the hybrid coating layer increased with increasing HA content in the electrolyte solution, while preserving the microporous morphology. This hybrid coating improved the osteoblastic activity of the porous Ti scaffolds significantly.

KW - Hydroxyapatite (HA)

KW - Mechanical properties

KW - Metals and alloys

KW - Porosity

KW - Titanium (Ti)

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