采用粉末冶金技术添加造孔剂制备生物医学用高孔隙度Ti-Co合金.Ti合金因具有高的熔点和氧亲和力.而难以进行直接加工.添加Co能降低其熔点,因而Ti-Co合金能在更低的温度进行烧结.在人工唾液中考察制备的Ti-Co合金样品的电化学腐蚀行为.研究合金的Co含量、人工唾液的pH值和氟离子浓度升高对样品的电化学腐蚀性能的影响对样品的显微组织和力学性能进行测试.电化学阻抗谱分析结果表明,样品的耐蚀性随氟离子浓度升高和pH值降低而降低.根据Mott-Schottky分析,缺陷密度随氟离子浓度的增加和人工唾液pH值的降低而增加.
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