University of Southern Queensland ePrints (University of Southern Queensland) · 2005 · 29 citations · 0 references
Natural SciencesMaterials EngineeringMaterials ScienceBiomaterialsCorrosion ScienceMetallurgyCorrosion EngineeringCorrosion EvaluationCorrosion KineticsCorrosion MechanismsCorrosion ResistanceCorrosion-resistant MaterialsBiodegradable Metallic MaterialsBioinspired Corrosion-resistant MaterialsBiomedical AlloysCorrosion Rate ReductionImpurity DefectsMagnesium AlloysMagnesium MetallurgyOpen-circuit Potential
Magnesium and its alloys as bio-materials have many obvious advantages. It is possible to develop new type of bio-degradable medical magnesium alloys by use of the poor corrosion resistance of magnesium. The effect of impurity content and processing state on the bio-corrosion properties of two pure magnesiums in the physiological saline solution were investigated. The results showed that both the reduction of impurity content and the grain refinement can enhance the open circuit potential of pure magnesium and decrease the corrosion rate in the physiological saline solution. The corrosion rate of pure magnesium can be controlled through ways of changing the impurity content, grain refinement and solution treatment, which makes magnesium suitable as a new type of pre-developed bio-degradable metal material.