Abstract
Abstract The present study evaluates the corrosion resistance effect of chitosan coating onto porous magnesium (Mg) monoliths with porosities of 14–40 vol.%, prepared by sintering of Mg powder with NH 4 HCO 3 used as spacer particles. The dip-coated chitosan was found to interact with corrosion products (Mg(OH) 2 and MgO) via hydrogen bonding, providing the physiological stability and the corrosion resistance, at the same time affecting the mineralization process towards amorphous apatite with a small contribution of crystalline hydroxyapatite(HAP). The electrochemical studies reveal that porosity increases, and that the coating process affects the corrosion resistance positively. However, the values for compression strength (17–72 MPa) and elastic modulus (12–26 MPa) of chitosan-coated monolith indicate its applicability as a supporting, rather than self-standing implantation material.
Published Version
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