采用电化学测试技术研究了在人工模拟体液中pH值变化对离子注N人体用SUS316L不锈钢,Co Cr合金,工业纯Ti和Ti-6Al-4V合金腐蚀行为的影响.结果表明,随着pH值的降低,试样的腐蚀电位负移,SUS316I不锈钢和Co-Cr合金的点蚀电位与缝隙腐蚀电位降低,使材料发生局部腐蚀的敏感性提高;工业纯Ti和Ti 6Al-4V合金的腐蚀电流密度增大,提高离子释放速度,加大对人体的潜在生理危害.
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