Effects of delamination on fretting wear behaviors of plasma-sprayed hydroxyapatite coating

This study aims at clarifying the effects of delamination on fretting wear behaviors of plasma-sprayed hydroxyapatite coating. Plasma-sprayed hydroxyapatite (HAp) coating has been widely used as a bond between human bone with artificial metallic implants in order to smoothly transmit loads by gaits....

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Autores principales:	Yuichi OTSUKA, Yukio MIYASHITA, Yoshiharu MUTOH
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2016
Materias:	hydroxyapatite plasma-spray coating biomaterials interface mechanics fretting fatigue fretting wear Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/1d7189d85ac74b0fa6358de4ad843a5e
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spelling	oai:doaj.org-article:1d7189d85ac74b0fa6358de4ad843a5e2021-11-26T06:40:17ZEffects of delamination on fretting wear behaviors of plasma-sprayed hydroxyapatite coating2187-974510.1299/mej.15-00573https://doaj.org/article/1d7189d85ac74b0fa6358de4ad843a5e2016-03-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/3/2/3_15-00573/_pdf/-char/enhttps://doaj.org/toc/2187-9745This study aims at clarifying the effects of delamination on fretting wear behaviors of plasma-sprayed hydroxyapatite coating. Plasma-sprayed hydroxyapatite (HAp) coating has been widely used as a bond between human bone with artificial metallic implants in order to smoothly transmit loads by gaits. However, HAp coating is susceptible to be failed due to brittle fracture, fatigue cracks, wears by fretting or corrosion etc. Wear particles made by fretting are concerned for activating inflammatory reactions at surrounding organs, which lead to loosening of implants or subsequent failures. Delamination in interfaces of HAp coating can accelerate the wear behaviors in fretting fatigue. Moreover, adhesive conditions between human bone with artificial implants can affect such the delamination / wear behaviors of HAp coating. Adhered contact surfaces between human bone with artificial implants are practically believed to suppress such wear behaviors. However, no experimental study to observe the behaviors has been conducted. An in-situ observation system of fretting fatigue was facilitated. The in-situ observations revealed that higher stress amplitudes and lower contact pressures promoted growth rates of delamination. Furthermore, delamination between HAp coating with metal substrates could accelerate the wear amounts from both the artificial human bone and HAp coatings. Adhered contact conditions between contact pads with coated substrates demonstrated lower delamination growth rates in HAp coating. Even in the cases of adhered contacts conditions, delaminaion continued propagations, which indicated that wear behaviors would occur once delamination reached a certain length. Finite element analyses also revealed that delamiantion length in HAp coating could mainly promote wear behaviors of HAp coating.Yuichi OTSUKAYukio MIYASHITAYoshiharu MUTOHThe Japan Society of Mechanical Engineersarticlehydroxyapatiteplasma-spraycoatingbiomaterialsinterface mechanicsfretting fatiguefretting wearMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 3, Iss 2, Pp 15-00573-15-00573 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	hydroxyapatite plasma-spray coating biomaterials interface mechanics fretting fatigue fretting wear Mechanical engineering and machinery TJ1-1570
spellingShingle	hydroxyapatite plasma-spray coating biomaterials interface mechanics fretting fatigue fretting wear Mechanical engineering and machinery TJ1-1570 Yuichi OTSUKA Yukio MIYASHITA Yoshiharu MUTOH Effects of delamination on fretting wear behaviors of plasma-sprayed hydroxyapatite coating
description	This study aims at clarifying the effects of delamination on fretting wear behaviors of plasma-sprayed hydroxyapatite coating. Plasma-sprayed hydroxyapatite (HAp) coating has been widely used as a bond between human bone with artificial metallic implants in order to smoothly transmit loads by gaits. However, HAp coating is susceptible to be failed due to brittle fracture, fatigue cracks, wears by fretting or corrosion etc. Wear particles made by fretting are concerned for activating inflammatory reactions at surrounding organs, which lead to loosening of implants or subsequent failures. Delamination in interfaces of HAp coating can accelerate the wear behaviors in fretting fatigue. Moreover, adhesive conditions between human bone with artificial implants can affect such the delamination / wear behaviors of HAp coating. Adhered contact surfaces between human bone with artificial implants are practically believed to suppress such wear behaviors. However, no experimental study to observe the behaviors has been conducted. An in-situ observation system of fretting fatigue was facilitated. The in-situ observations revealed that higher stress amplitudes and lower contact pressures promoted growth rates of delamination. Furthermore, delamination between HAp coating with metal substrates could accelerate the wear amounts from both the artificial human bone and HAp coatings. Adhered contact conditions between contact pads with coated substrates demonstrated lower delamination growth rates in HAp coating. Even in the cases of adhered contacts conditions, delaminaion continued propagations, which indicated that wear behaviors would occur once delamination reached a certain length. Finite element analyses also revealed that delamiantion length in HAp coating could mainly promote wear behaviors of HAp coating.
format	article
author	Yuichi OTSUKA Yukio MIYASHITA Yoshiharu MUTOH
author_facet	Yuichi OTSUKA Yukio MIYASHITA Yoshiharu MUTOH
author_sort	Yuichi OTSUKA
title	Effects of delamination on fretting wear behaviors of plasma-sprayed hydroxyapatite coating
title_short	Effects of delamination on fretting wear behaviors of plasma-sprayed hydroxyapatite coating
title_full	Effects of delamination on fretting wear behaviors of plasma-sprayed hydroxyapatite coating
title_fullStr	Effects of delamination on fretting wear behaviors of plasma-sprayed hydroxyapatite coating
title_full_unstemmed	Effects of delamination on fretting wear behaviors of plasma-sprayed hydroxyapatite coating
title_sort	effects of delamination on fretting wear behaviors of plasma-sprayed hydroxyapatite coating
publisher	The Japan Society of Mechanical Engineers
publishDate	2016
url	https://doaj.org/article/1d7189d85ac74b0fa6358de4ad843a5e
work_keys_str_mv	AT yuichiotsuka effectsofdelaminationonfrettingwearbehaviorsofplasmasprayedhydroxyapatitecoating AT yukiomiyashita effectsofdelaminationonfrettingwearbehaviorsofplasmasprayedhydroxyapatitecoating AT yoshiharumutoh effectsofdelaminationonfrettingwearbehaviorsofplasmasprayedhydroxyapatitecoating
_version_	1718409704268365824

Effects of delamination on fretting wear behaviors of plasma-sprayed hydroxyapatite coating

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