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Effect of calcium content on the microstructure, hardness and in-vitro corrosion behavior of biodegradable Mg-Ca binary alloy

Effect of calcium addition on microstructure, hardness value and corrosion behavior of five different Mg-xCa binary alloys (x = 0.7, 1, 2, 3, 4 wt. (%)) was investigated. Notable refinement in microstructure of the alloy occurred with increasing calcium content. In addition, more uniform distributio...

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Main Authors: Harandi, Shervin Eslami, Mirshahi, Mohammad, Koleini, Shahriar, Idris, Mohd. Hasbullah, Jafari, Hassan, Abdul Kadir, Mohammed Rafiq
Format: Article
Language:English
Published: 2013
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/id/eprint/50220/1/MohdHasbullahIdris2013_Effectofcalciumcontent.pdf
http://eprints.utm.my/id/eprint/50220/
http://dx.doi.org/10.1590/S1516-14392012005000151
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spelling my.utm.502202018-09-30T08:17:12Z http://eprints.utm.my/id/eprint/50220/ Effect of calcium content on the microstructure, hardness and in-vitro corrosion behavior of biodegradable Mg-Ca binary alloy Harandi, Shervin Eslami Mirshahi, Mohammad Koleini, Shahriar Idris, Mohd. Hasbullah Jafari, Hassan Abdul Kadir, Mohammed Rafiq TJ Mechanical engineering and machinery Effect of calcium addition on microstructure, hardness value and corrosion behavior of five different Mg-xCa binary alloys (x = 0.7, 1, 2, 3, 4 wt. (%)) was investigated. Notable refinement in microstructure of the alloy occurred with increasing calcium content. In addition, more uniform distribution of Mg2Ca phase was observed in α-Mg matrix resulted in an increase in hardness value. The in-vitro corrosion examination using Kokubo simulated body fluid showed that the addition of calcium shifted the fluid pH value to a higher level similar to those found in pure commercial Mg. The high pH value amplified the formation and growth of bone-like apatite. Higher percentage of Ca resulted in needle-shaped growth of the apatite. Electrochemical measurements in the same solution revealed that increasing Ca content led to higher corrosion rates due to the formation of more cathodic Mg2Ca precipitate in the microstructure. The results therefore suggested that Mg-0.7Ca with the minimum amount of Mg2Ca is a good candidate for bio-implant applications 2013 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/50220/1/MohdHasbullahIdris2013_Effectofcalciumcontent.pdf Harandi, Shervin Eslami and Mirshahi, Mohammad and Koleini, Shahriar and Idris, Mohd. Hasbullah and Jafari, Hassan and Abdul Kadir, Mohammed Rafiq (2013) Effect of calcium content on the microstructure, hardness and in-vitro corrosion behavior of biodegradable Mg-Ca binary alloy. Materials Research-Ibero-American Journal of Materials, 16 (1). pp. 11-18. ISSN 1516-1439 http://dx.doi.org/10.1590/S1516-14392012005000151 DOI: 10.1590/S1516-14392012005000151
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Harandi, Shervin Eslami
Mirshahi, Mohammad
Koleini, Shahriar
Idris, Mohd. Hasbullah
Jafari, Hassan
Abdul Kadir, Mohammed Rafiq
Effect of calcium content on the microstructure, hardness and in-vitro corrosion behavior of biodegradable Mg-Ca binary alloy
description Effect of calcium addition on microstructure, hardness value and corrosion behavior of five different Mg-xCa binary alloys (x = 0.7, 1, 2, 3, 4 wt. (%)) was investigated. Notable refinement in microstructure of the alloy occurred with increasing calcium content. In addition, more uniform distribution of Mg2Ca phase was observed in α-Mg matrix resulted in an increase in hardness value. The in-vitro corrosion examination using Kokubo simulated body fluid showed that the addition of calcium shifted the fluid pH value to a higher level similar to those found in pure commercial Mg. The high pH value amplified the formation and growth of bone-like apatite. Higher percentage of Ca resulted in needle-shaped growth of the apatite. Electrochemical measurements in the same solution revealed that increasing Ca content led to higher corrosion rates due to the formation of more cathodic Mg2Ca precipitate in the microstructure. The results therefore suggested that Mg-0.7Ca with the minimum amount of Mg2Ca is a good candidate for bio-implant applications
format Article
author Harandi, Shervin Eslami
Mirshahi, Mohammad
Koleini, Shahriar
Idris, Mohd. Hasbullah
Jafari, Hassan
Abdul Kadir, Mohammed Rafiq
author_facet Harandi, Shervin Eslami
Mirshahi, Mohammad
Koleini, Shahriar
Idris, Mohd. Hasbullah
Jafari, Hassan
Abdul Kadir, Mohammed Rafiq
author_sort Harandi, Shervin Eslami
title Effect of calcium content on the microstructure, hardness and in-vitro corrosion behavior of biodegradable Mg-Ca binary alloy
title_short Effect of calcium content on the microstructure, hardness and in-vitro corrosion behavior of biodegradable Mg-Ca binary alloy
title_full Effect of calcium content on the microstructure, hardness and in-vitro corrosion behavior of biodegradable Mg-Ca binary alloy
title_fullStr Effect of calcium content on the microstructure, hardness and in-vitro corrosion behavior of biodegradable Mg-Ca binary alloy
title_full_unstemmed Effect of calcium content on the microstructure, hardness and in-vitro corrosion behavior of biodegradable Mg-Ca binary alloy
title_sort effect of calcium content on the microstructure, hardness and in-vitro corrosion behavior of biodegradable mg-ca binary alloy
publishDate 2013
url http://eprints.utm.my/id/eprint/50220/1/MohdHasbullahIdris2013_Effectofcalciumcontent.pdf
http://eprints.utm.my/id/eprint/50220/
http://dx.doi.org/10.1590/S1516-14392012005000151
_version_ 1643652789562245120
score 13.211869

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