选用球形雾化镁粉作为原料,碳酸氢铵做造孔剂,采用粉末冶金法制备出孔径和孔隙率可控的多孔镁.研究了不同孔隙率的多孔镁在仿生体液(SBF)中的腐蚀性能,以及通过碱处理和碱热处理对多孔镁进行表面改性,以提高其在仿生体液中的耐腐蚀性.通过XRD、SEM分别对所制备的多孔镁及表面处理后样品的物相组成、微观形貌进行分析.结果表明:制备的多孔镁具有联通孔、孔径和孔隙率可控等优异性能;多孔镁的腐蚀速率随孔隙率的增加而增高;通过碱处理和碱热处理等表面改性,均有效的提高了试样的耐腐蚀性能,但碱热处理效果最佳.
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