Magnesium Alloys: Properties and Applications

Magnesium alloys are metallic materials that dissolve gradually in the body's physiological environment, making them candidates for temporary implants—such as bone screws and cardiovascular stents—that eliminate the need for a second surgery to remove the device. Researchers study how the alloy's composition, grain structure, and surface treatments influence its corrosion rate, mechanical strength, and compatibility with surrounding tissue, since degrading too quickly can release hydrogen gas and compromise healing, while degrading too slowly defeats the purpose of using a biodegradable material. A central challenge is achieving precise, predictable degradation behavior across the variable chemistry of real biological environments, which differs considerably from laboratory test conditions. Active work focuses on texture modification through alloying and processing techniques, as well as surface coatings, to bring corrosion resistance and biocompatibility into a clinically acceptable balance.

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Keywords

Magnesium AlloysBiodegradable MaterialsOrthopedic BiomaterialsCorrosion ResistanceBiocompatibilityTexture Modification