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采用Ringer’s溶液,PBS(-)溶液和Hank’s溶液,研究了不同模拟体液和pH值对316L不锈钢、Co-Cr合金和Ti-6Al-4V合金生物医学材料耐蚀性能的影响。结果表明,不同模拟体液的侵蚀性是不同的,侵蚀性由强到弱的顺序为Ringer’s>PBS(-)>Hank’s溶液。RBS(-)和Hank’s溶液中的HPO+4~(2-)、H_2PO_4~(2-)和SO_4~(2-)、葡萄糖,对生物材料的腐蚀起到一定的缓蚀作用。pH降低,对316L不锈钢和Co-Cr合金的耐蚀性能有较大的影响,而对Ti-6Al-4V合金影响较小。
The effects of different simulated body fluids and pH values on the corrosion resistance of 316L stainless steel, Co-Cr alloy and Ti-6Al-4V alloy biomedical materials were investigated using Ringer’s solution, PBS (-) solution and Hank’s solution. The results show that the erosion of different simulated body fluids is different, and the order of erosion from strong to weak is Ringer’s> PBS (-)> Hank’s solution. HPO + 4 ~ (2 -), H_2PO_4 ~ (2-) and SO_4 ~ (2-), glucose in HBS’s solution of RBS (-) and Hank’s solution can inhibit the corrosion of biomaterials. The decrease of pH has a great influence on the corrosion resistance of 316L stainless steel and Co-Cr alloy, but has little effect on Ti-6Al-4V alloy.