The Influence of Hydroxyapatite and Alumina Particles on the Mechanical Properties and Corrosion Behavior of Mg-Zn Hybrid Composites for Implants

Considering the necessity for a biodegradable implant alloy with good biocompatibility and mechanical strength, dual ceramic particles of HAP and Al<sub>2</sub>O<sub>3</sub> were added to Mg-Zn alloy to produce a new hybrid composite using powder metallurgy. The paper reports...

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Autores principales: Rashid Nazirah, Hussain Zuhailawati, Mohamad Rodzi Siti Nur Hazwani, Tuti Katrina Abdullah, Ismail Azzura, Brij Kumar Dhindaw
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Publicado: MDPI AG 2021
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spelling oai:doaj.org-article:0d3c87c1d8974645a8e4fad223e5acbb2021-11-11T17:50:03ZThe Influence of Hydroxyapatite and Alumina Particles on the Mechanical Properties and Corrosion Behavior of Mg-Zn Hybrid Composites for Implants10.3390/ma142162461996-1944https://doaj.org/article/0d3c87c1d8974645a8e4fad223e5acbb2021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6246https://doaj.org/toc/1996-1944Considering the necessity for a biodegradable implant alloy with good biocompatibility and mechanical strength, dual ceramic particles of HAP and Al<sub>2</sub>O<sub>3</sub> were added to Mg-Zn alloy to produce a new hybrid composite using powder metallurgy. The paper reports the mechanical and corrosion behaviour of Mg-Zn/HAP/Al<sub>2</sub>O<sub>3</sub> hybrid composites containing variable wt.% HAP and Al<sub>2</sub>O<sub>3</sub> with 15 wt.% total ceramic content. The powders of Mg, Zn, Al<sub>2</sub>O<sub>3</sub> and HAP were milled in a high-energy ball mill, and then compacted under 400 MPa and sintered at 300 °C. Density and compression strength increased with increasing Al<sub>2</sub>O<sub>3</sub> content. HAP facilitated weight gain in Hanks balanced salt solution due to deposition of an apatite layer which promoted anodic behaviour with higher corrosion resistance. A hybrid composite of Mg alloy with 5 wt.% Al<sub>2</sub>O<sub>3</sub> and 10 wt.% HAP displayed 153 MPa compressive strength, 1.37 mm/year corrosion resistance and bioactivity with a CA:P ratio of 1:1.55 and appears to be the most promising biodegradable implant material tested.Rashid NazirahHussain ZuhailawatiMohamad Rodzi Siti Nur HazwaniTuti Katrina AbdullahIsmail AzzuraBrij Kumar DhindawMDPI AGarticlemagnesium alloyhybrid compositebiodegradable implantcorrosionTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6246, p 6246 (2021)
institution DOAJ
collection DOAJ
language EN
topic magnesium alloy
hybrid composite
biodegradable implant
corrosion
Technology
T
Electrical engineering. Electronics. Nuclear engineering
TK1-9971
Engineering (General). Civil engineering (General)
TA1-2040
Microscopy
QH201-278.5
Descriptive and experimental mechanics
QC120-168.85
spellingShingle magnesium alloy
hybrid composite
biodegradable implant
corrosion
Technology
T
Electrical engineering. Electronics. Nuclear engineering
TK1-9971
Engineering (General). Civil engineering (General)
TA1-2040
Microscopy
QH201-278.5
Descriptive and experimental mechanics
QC120-168.85
Rashid Nazirah
Hussain Zuhailawati
Mohamad Rodzi Siti Nur Hazwani
Tuti Katrina Abdullah
Ismail Azzura
Brij Kumar Dhindaw
The Influence of Hydroxyapatite and Alumina Particles on the Mechanical Properties and Corrosion Behavior of Mg-Zn Hybrid Composites for Implants
description Considering the necessity for a biodegradable implant alloy with good biocompatibility and mechanical strength, dual ceramic particles of HAP and Al<sub>2</sub>O<sub>3</sub> were added to Mg-Zn alloy to produce a new hybrid composite using powder metallurgy. The paper reports the mechanical and corrosion behaviour of Mg-Zn/HAP/Al<sub>2</sub>O<sub>3</sub> hybrid composites containing variable wt.% HAP and Al<sub>2</sub>O<sub>3</sub> with 15 wt.% total ceramic content. The powders of Mg, Zn, Al<sub>2</sub>O<sub>3</sub> and HAP were milled in a high-energy ball mill, and then compacted under 400 MPa and sintered at 300 °C. Density and compression strength increased with increasing Al<sub>2</sub>O<sub>3</sub> content. HAP facilitated weight gain in Hanks balanced salt solution due to deposition of an apatite layer which promoted anodic behaviour with higher corrosion resistance. A hybrid composite of Mg alloy with 5 wt.% Al<sub>2</sub>O<sub>3</sub> and 10 wt.% HAP displayed 153 MPa compressive strength, 1.37 mm/year corrosion resistance and bioactivity with a CA:P ratio of 1:1.55 and appears to be the most promising biodegradable implant material tested.
format article
author Rashid Nazirah
Hussain Zuhailawati
Mohamad Rodzi Siti Nur Hazwani
Tuti Katrina Abdullah
Ismail Azzura
Brij Kumar Dhindaw
author_facet Rashid Nazirah
Hussain Zuhailawati
Mohamad Rodzi Siti Nur Hazwani
Tuti Katrina Abdullah
Ismail Azzura
Brij Kumar Dhindaw
author_sort Rashid Nazirah
title The Influence of Hydroxyapatite and Alumina Particles on the Mechanical Properties and Corrosion Behavior of Mg-Zn Hybrid Composites for Implants
title_short The Influence of Hydroxyapatite and Alumina Particles on the Mechanical Properties and Corrosion Behavior of Mg-Zn Hybrid Composites for Implants
title_full The Influence of Hydroxyapatite and Alumina Particles on the Mechanical Properties and Corrosion Behavior of Mg-Zn Hybrid Composites for Implants
title_fullStr The Influence of Hydroxyapatite and Alumina Particles on the Mechanical Properties and Corrosion Behavior of Mg-Zn Hybrid Composites for Implants
title_full_unstemmed The Influence of Hydroxyapatite and Alumina Particles on the Mechanical Properties and Corrosion Behavior of Mg-Zn Hybrid Composites for Implants
title_sort influence of hydroxyapatite and alumina particles on the mechanical properties and corrosion behavior of mg-zn hybrid composites for implants
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/0d3c87c1d8974645a8e4fad223e5acbb
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