Magnesium Alloys: Properties and Applications

Magnesium alloys are lightweight metallic materials that dissolve gradually in the body's physiological environment, making them attractive candidates for temporary orthopedic implants such as bone screws and stents that eliminate the need for a second surgery to remove a permanent device. Researchers study how alloying elements, surface treatments, and microstructural modifications — including adjustments to grain texture — influence how quickly and uniformly a magnesium implant degrades, and whether the byproducts remain tolerable to surrounding tissue. A central challenge is that magnesium corrodes too rapidly in the body's saline conditions, which can compromise mechanical integrity before the bone has healed and trigger local hydrogen gas accumulation. Current work focuses on achieving a controlled, predictable degradation rate while maintaining sufficient biocompatibility, with ongoing debate over which alloy compositions and processing routes best balance these competing demands in real clinical environments.

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Keywords

Magnesium AlloysBiodegradable MaterialsOrthopedic BiomaterialsCorrosion ResistanceBiocompatibilityTexture Modification