| USSP表面纳米化Fe-20Cr合金的腐蚀性能及机制研究 |
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| 引用本文： | 李雪莉,李瑛,王福会,雍兴平.USSP表面纳米化Fe-20Cr合金的腐蚀性能及机制研究[J].中国腐蚀与防护学报,2002,22(6):326-329,334. |
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| 作者姓名： | 李雪莉 李瑛 王福会 雍兴平 |
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| 作者单位： | 1. 中国科学院金属研究所金属腐蚀与防护国家重点实验室
2. 快速凝固非平衡国家重点实验室,沈阳,110016 |
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| 基金项目： | 国家自然科学基金 ( 5 0 0 0 10 13)资助项目 |
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| 摘 要： | 利用电化学方法，结合XRD、EDX、SEM和EPMA等表面分析技术，研究了经超声喷丸表面纳米化的Fe-20Cr合金在0．05mol/L H2SO4 0.5mol/L NaCl溶液中的腐蚀性能。结果表明，纳米化后合金的耐蚀性能降低。相对于粗晶合金，纳米材料晶粒的细化、钝化金属中Cr元素分析的均匀性降低以及超声喷丸技术在制备纳米晶过程中所带来的残余应力是纳米材料耐蚀性能降低的原因。
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| 关 键 词： | 超声喷丸 表面纳米化 Fe－20Cr 钝化 残余应力 |
| 文章编号： | 1005-4537(2002)06-0326-05 |
CORROSION BEHAVIOR OF Fe - 20Cr ALLOY TREATED BY ULTRASONIC SHOT PEENING TECHNIQUE |
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| LI Xueli ,LI Ying ,WANG Fuhui ,YONG Xingping.CORROSION BEHAVIOR OF Fe - 20Cr ALLOY TREATED BY ULTRASONIC SHOT PEENING TECHNIQUE[J].Journal of Chinese Society For Corrosion and Protection,2002,22(6):326-329,334. |
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| Authors: | LI Xueli LI Ying WANG Fuhui YONG Xingping |
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| Affiliation: | LI Xueli 1,LI Ying 1,WANG Fuhui 1,YONG Xingping 2 |
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| Abstract: | Electrochemical methods and XRD,EDX,SEM,EPMA technique were used to investigate the corrosion performance of nanocrystallized Fe-20Cr surface which was fabricated by using an ultrasonic shot peening(USSP)technique,and the corrosion solution was 0.05 mol/L H 2SO 4 0.5 mol/L NaCl.The results show that the capability of corrosion resistance of the SNC Fe-20Cr alloy was lower than that of the cast alloy.Contrast to the cast alloy,the reduction of the grain size,the less uniform passive element of Cr,and the remnant strain caused by USSP technique are thought to be the main reasons which result in the poorer corrosion resistance of nanocrystal alloy. |
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| Keywords: | USSP SNC Fe-20Cr passive remnant stress |
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