The nanostructure of an electrochemically deposited hydroxyapatite coating

Hao Wang; Noam Eliaz; Linn W. Hobbs

doi:10.1016/j.matlet.2011.05.016

The nanostructure of an electrochemically deposited hydroxyapatite coating

Hao Wang, Noam Eliaz, Linn W. Hobbs

School of Mechanical Engineering

Tel Aviv University

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

Abstract

The structure of an implant's coating can significantly affect its physical and chemical properties, and eventually - its clinical performance. In this paper, the nanostructure of an electrochemically deposited hydroxyapatite (EDHA) coating was studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and high-resolution transmission electron microscopy (HRTEM). The X-ray analysis showed that the coating consisted predominantly of the stoichiometric HA phase. However, SEM and HRTEM revealed that EDHA coating is composed of two distinct regions: the upper layer consisted of platelet crystallites preferentially grown perpendicular to the substrate surface, while the lower layer was dense and uniform and consisted of nano-sized crystallites of HA. The possible effects of these different microstructures on the implant's after-implantation behavior are discussed.

Original language	English
Pages (from-to)	2455-2457
Number of pages	3
Journal	Materials Letters
Volume	65
Issue number	15-16
DOIs	https://doi.org/10.1016/j.matlet.2011.05.016
State	Published - Aug 2011

Keywords

Biomaterials
Electrodeposition
Hydroxyapatite
Orthopaedic implants

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matlet.2011.05.016

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title = "The nanostructure of an electrochemically deposited hydroxyapatite coating",

abstract = "The structure of an implant's coating can significantly affect its physical and chemical properties, and eventually - its clinical performance. In this paper, the nanostructure of an electrochemically deposited hydroxyapatite (EDHA) coating was studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and high-resolution transmission electron microscopy (HRTEM). The X-ray analysis showed that the coating consisted predominantly of the stoichiometric HA phase. However, SEM and HRTEM revealed that EDHA coating is composed of two distinct regions: the upper layer consisted of platelet crystallites preferentially grown perpendicular to the substrate surface, while the lower layer was dense and uniform and consisted of nano-sized crystallites of HA. The possible effects of these different microstructures on the implant's after-implantation behavior are discussed.",

keywords = "Biomaterials, Electrodeposition, Hydroxyapatite, Orthopaedic implants",

author = "Hao Wang and Noam Eliaz and Hobbs, \{Linn W.\}",

note = "Funding Information: This work was supported by the Division of Bioengineering and Environmental Systems of the US National Science Foundation under award DMR-9904046 and the Cambridge-MIT Institute .",

year = "2011",

month = aug,

doi = "10.1016/j.matlet.2011.05.016",

language = "الإنجليزيّة",

volume = "65",

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journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

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T1 - The nanostructure of an electrochemically deposited hydroxyapatite coating

AU - Wang, Hao

AU - Eliaz, Noam

AU - Hobbs, Linn W.

N1 - Funding Information: This work was supported by the Division of Bioengineering and Environmental Systems of the US National Science Foundation under award DMR-9904046 and the Cambridge-MIT Institute .

PY - 2011/8

Y1 - 2011/8

N2 - The structure of an implant's coating can significantly affect its physical and chemical properties, and eventually - its clinical performance. In this paper, the nanostructure of an electrochemically deposited hydroxyapatite (EDHA) coating was studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and high-resolution transmission electron microscopy (HRTEM). The X-ray analysis showed that the coating consisted predominantly of the stoichiometric HA phase. However, SEM and HRTEM revealed that EDHA coating is composed of two distinct regions: the upper layer consisted of platelet crystallites preferentially grown perpendicular to the substrate surface, while the lower layer was dense and uniform and consisted of nano-sized crystallites of HA. The possible effects of these different microstructures on the implant's after-implantation behavior are discussed.

AB - The structure of an implant's coating can significantly affect its physical and chemical properties, and eventually - its clinical performance. In this paper, the nanostructure of an electrochemically deposited hydroxyapatite (EDHA) coating was studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and high-resolution transmission electron microscopy (HRTEM). The X-ray analysis showed that the coating consisted predominantly of the stoichiometric HA phase. However, SEM and HRTEM revealed that EDHA coating is composed of two distinct regions: the upper layer consisted of platelet crystallites preferentially grown perpendicular to the substrate surface, while the lower layer was dense and uniform and consisted of nano-sized crystallites of HA. The possible effects of these different microstructures on the implant's after-implantation behavior are discussed.

KW - Biomaterials

KW - Electrodeposition

KW - Hydroxyapatite

KW - Orthopaedic implants

UR - http://www.scopus.com/inward/record.url?scp=79957649936&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2011.05.016

DO - 10.1016/j.matlet.2011.05.016

M3 - مقالة

SN - 0167-577X

VL - 65

SP - 2455

EP - 2457

JO - Materials Letters

JF - Materials Letters

IS - 15-16

ER -

The nanostructure of an electrochemically deposited hydroxyapatite coating

Abstract

Keywords

All Science Journal Classification (ASJC) codes

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