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材料研究学报  2011, Vol. 25 Issue (5): 527-533    
  研究论文 本期目录 | 过刊浏览 |
Sb对AM50--Y镁合金耐蚀性能的影响
刘子利1, 周桂斌1, 刘希琴1, 李健2
1.南京航空航天大学 材料科学与技术学院 南京 210016
2.江苏中翼汽车新材料科技有限公司 常熟 215542
Effects of Sb Addition on Corrosion Resistance of AM50–Y Magnesium Alloy
LIU Zili1, ZHOU Guibin1, LIU Xiqin1, LI Jian2
1.College of Materials Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016
2.Jiangsu Favour Automotive New Stuff Sci–Tech Co., Ltd, Changshu 215542
引用本文:

刘子利 周桂斌 刘希琴 李健. Sb对AM50--Y镁合金耐蚀性能的影响[J]. 材料研究学报, 2011, 25(5): 527-533.
, , , . Effects of Sb Addition on Corrosion Resistance of AM50–Y Magnesium Alloy[J]. Chin J Mater Res, 2011, 25(5): 527-533.

全文: PDF(1173 KB)  
摘要: 研究了不同含量Sb对AM50--Y镁合金的显微组织及在NaCl溶液腐蚀介质中腐蚀性能的影响。结果表明, 加入Sb后, Sb优先与Y形成YSb相。随着Sb含量的增加, 块状Al2Y相数量减少、尺寸变短, YSb相数量增多, 当Sb含量增至1%, YSb相聚集长大粗化。合金腐蚀速率和腐蚀电流密度随含Sb量的增大而增大, 而氧化膜电阻和双电层电容减小, 合金耐蚀性能明显下降; 当Sb含量为1%时, 合金耐蚀性最差, 腐蚀速率高达2.65 mg ? cm-2 ? d-1, 比未添加Sb合金增加了近2倍。
关键词 金属材料AM50--YSb显微组织耐性性能    
Abstract:The effects of Sb contents on the microstructure and corrosion behavior in NaCl solution of as-cast AM50-Y alloy were studied. The results show that with the addition of Sb, YSb phase forms preferentially. As Sb contents increase, the size and amount of the polygonal Al2Y reduce, while the amount of YSb phase increases, which aggregates and increases in size when Sb content is up to 1%. The corrosion rate and corrosion current of the alloys are improved, whereas the oxide film resistance and electric double layer capacitance are reduced with the increase of Sb. The alloy with 1% Sb has the worst corrosion resistance, and the corrosion rate is up to 2.65 mg·cm−2·d−1, which is increased by nearly 2 times compared with the alloy without Sb addition.
Key wordsmetallic materials    AM50–Y    Sb    microstructure    corrosion resistance
收稿日期: 2011-07-06     
ZTFLH: 

TG146

 
基金资助:

江苏省自然科学基金BK2009577和江苏省科技支撑计划BE2010103资助项目。

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