采用电化学测试技术研究了离子注氮对SUS316L不锈钢,Co-Cr合金,工业纯钛和Ti-6Al-4V植入合金在Hanks人工模拟体液中腐蚀行为的影响.腐蚀电位和极化曲线的测量结果表明,注氮使4种植入金属材料的腐蚀电位正移,钝化电位区间扩大,耐蚀性明显提高.注氮的工业纯钛和Ti-6Al-4V合金的耐蚀性最佳,其钝化区拓宽为4V以上.通过AES分析发现,离子注氮后钛及其合金表面形成的氮化钛膜层及弥散的氮化钛析出相的化学效应,使基体电化学性能得到提高.注氮的Co-Cr合金的耐蚀性略优于SUS316L不锈钢.Co-Cr合金表面形成的钴氮化合物相对基体起到保护作用,降低了腐蚀速率.SUS316L不锈钢表面形成铁和铬氮化合物膜,有效地阻止了Cr3+的水解,且氮离子注入促进Fe3O4的产生,提高了耐腐蚀性能.
参考文献
| [1] | Takao Haoawa;achiko .Metals and Alloys in Environment Inside Human BOdy and Their Surface Modifieations[J].Japanese,1998,4712:750-757. |
| [2] | 李佐臣,李常亮,裘松波.外科植入TAMZ合金生物学评价[J].稀有金属材料与工程,1998(01):59-62. |
| [3] | Hitoshi Hamanaka;akayuki Yoneyamal .Corrosion of Metallic Biomaterials[J].Corrosion Engineering(in Japanese),1989,38:333-339. |
| [4] | Luckey T D;enugopal B .Metal Topicity in Mammals[M].New York: Plenum Press,977:1. |
| [5] | MUCHA A;raun M.Requisite Parameters for Optimal Wear Performance of Nitrogen-Implanted Titanium and Ti-6Al-4V[J].Surface and Coatings Technology,1992:135-139. |
| [6] | Farges G et al.Tribological Behaviour and Structure of N-implanted Ti-6Al-4V[J].Surface and Coatings Technology,988(06):231-235. |
| [7] | Seidel F.;Mayr P.;Stock HR. .Metallographic investigations of nitrogen-implanted titanium alloys[J].Surface & Coatings Technology,1998(1/3):1174-1180. |
| [8] | 牟战旗 .Effect of Different Artificial Body Fluids and Their pH on Corrosion of Biomedical Metallic Materials[J].中国腐蚀与防护学报,1998,18(02):126-130. |
| [9] | 杨武.金属局部腐蚀[M].北京:化学工业出版社:44-49. |
| [10] | 姜鸿志.Nitrided Titanium Artificial Joint[J].中国生物医学工程学报,1982(01):35-41. |
| [11] | Leitao L et al.Electrochemical and Surface Modifications on N+ -Ion Implanted Ti-6Al-4V Immersed in HBSS[J].Corrosion Science,995:1861-1867. |
| [12] | Saritas S;rocter R P M;rant W A.The Use of Ion Implantation to Modify the Tribological Properties of Ti-6Al-4V Alloy[J].Materials Science and Engineering,1987:91-306. |
| [13] | Williams J M;uchanan R A .Ion Implantation of Surgical Ti-6Al-4V Alloy[J].Materials Science and Engineering,1985,9:237-246. |
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