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Mechanical compatibility and degradation behavior of mechanically alloyed biodegradable hydroxyapatite disprersed magnesium-zinc composite/ Prof. Dr. Zuhailawati Hussain

Mechanical compatibility and degradation behavior of mechanically alloyed biodegradable hydroxyapatite disprersed magnesium-zinc composite

Abstract This work aims to investigate the mechanical performance and biodegradation behaviour of magnesium-zinc/hydroxyapatite (Mg-Zn/HA) composttC\ that wac; fabricated via different powder mixing techniques. Mg-Zn/HA composite which was fabric ted through the mechanical alloying technique and milled for 6 hours attained the best combmotlon of improved corrosion behaviour as well as mechanical properties which is due to lowe t cor,osion rate (0.1487 mm/year by electrochemical polarization and 0.34 x 1Q- 3 mm/year by immersion test) and acceptable microhardness (64 HV) and compressive strength (193 MP.) Mg-Zn/HA composite possessed good bioactivity characteristics through the immersion test, however immersion time of 24 hours was found to be insufficient to produce composites that cun t1 •fy the initial bone mineralization which the Ca:P ratio in the range of 1:1 to 1:1.67.

Contributor(s): Prof. Dr. Zuhailawati Hussain - Author Language: English Subject Keywords: biodegradation behaviour; fabric ; polarization First presented to the public: 3/4/2019 Original Publication Date: 6/12/2019 Previously Published By: Universiti Sains Malaysia Place Of Publication: School of Materials & Mineral Resources Engineering Citation: Extents: Number of Pages - 91 License Grantor / Date Granted:   / ( View License ) Date Deposited 2019-04-04 10:37:36.317 Date Last Updated 2019-07-23 16:01:02.63 Submitter: Nor Hayati Ismail

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