Abstract
Foamed magnesium alloy has good mechanical properties and porosity and is suitable for biological materials, but the disadvantage is that it has poor corrosion resistance. Relevant studies have shown that AZ91 magnesium alloy has good corrosion resistance. Therefore, this paper uses AZ91 magnesium alloy powder as raw material and urea as a pore former. It is hoped that a foamed magnesium alloy material with better corrosion resistance can be developed. Under the conditions of sintering temperature of 550 ℃, holding time of 1.5 h, and urea content of 60%, the influence of different powder pressing pressures on the porosity and mechanical properties of the sample was studied. After many experiments, the results show that when the pressing pressure is 11 MPa, the pore distribution of the sample is relatively uniform, and the mechanical properties are better, which meet the performance requirements as a biological material.KeywordsAZ91 magnesium alloySuppressing pressureMechanical propertiesPorosity
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