| 高温渗氮工艺对无镍不锈钢模拟体液环境下耐蚀性的影响 |
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| 引用本文： | 王耘涛,任伊宾,杨柯.高温渗氮工艺对无镍不锈钢模拟体液环境下耐蚀性的影响[J].合肥工业大学学报(自然科学版),2012(2):153-156. |
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| 作者姓名： | 王耘涛 任伊宾 杨柯 |
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| 作者单位： | 内蒙古民族大学机械工程学院;中国科学院金属研究所 |
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| 基金项目： | 国家自然科学基金资助项目(50534010),国家自然科学面上基金资助项目(50671101) |
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| 摘 要： | 文章采用高温渗氮工艺得到高氮无镍不锈钢,以提高医用不锈钢的安全性和耐蚀性。实验结果表明:渗氮层氮质量分数可达1.0%,与原材料相比氮质量分数增加了2倍;在0.9%NaCl生理盐水和模拟血浆溶液中具有优异的耐蚀性,在加热温度1 200℃、氮气压力0.3MPa、保温时间24h条件下得到的高氮奥氏体不锈钢在0.9%NaCl生理盐水中的点蚀电位约1 200mV,大大高于渗氮前(约320mV)的水平。
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| 关 键 词： | 高温渗氮 无镍不锈钢 氮质量分数 模拟体液 耐腐蚀性能 |
Effect of high temperature nitriding on nickel-free stainless steel corrosion resistance in simulated body fluid |
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| WANG Yun-tao,REN Yi-bin,YANG Ke.Effect of high temperature nitriding on nickel-free stainless steel corrosion resistance in simulated body fluid[J].Journal of Hefei University of Technology(Natural Science),2012(2):153-156. |
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| Authors: | WANG Yun-tao REN Yi-bin YANG Ke |
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| Institution: | 1.College of Mechanical Engineering,Inner Mongolia University for Nationalities,Tongliao 028042,China;2.Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China) |
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| Abstract: | High nitrogen nickel-free stainless steel was fabricated by high temperature nitriding so as to improve the security and corrosion resistance of medical stainless steel.The results show that the nitrogen mass faction reaches above 1.0%,which increases two times compared with that of the original material.The corrosion resistance of nitriding specimen is better than that of original specimen in 0.9% NaCl solution and artificial plasma.The pitting corrosion potential of high nitrogen stainless steel specimen produced with a high temperature nitriding condition of 1 200 ℃,nitrogen pressure of 0.3 MPa and reaction time of 24 h in 0.9% NaCl solution is approximately 1 200 mV,which is much higher than that of original specimen(320 mV). |
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| Keywords: | high temperature nitriding nickel-free stainless steel nitrogen mass faction simulated body fluid corrosion resistance |
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