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中国腐蚀与防护学报  2010, Vol. 30 Issue (4): 295-299    
  研究报告 本期目录 | 过刊浏览 |
轧制温度对铝阳极Al-Mg-Sn-Bi-Ga-In组织和性能的影响
梁叔全,张勇,官迪凯,谭小平,唐艳,毛志伟
中南大学材料科学与工程学院 长沙 410083
EFFECT OF ROLLING TEMPERATURE ON MICROSTRUCTURE AND PERFORMANCES OF Al-Mg-Sn-Bi-Ga-In ALLOY ANODE
LIANG Shuquan, ZHANG Yong, GUAN Dikai, TAN Xiaoping, TANG Yan, MAO Zhiwei
School of Materials Science and Engineering,Central South University, Changsha 410083
全文: PDF(2761 KB)  
摘要: 

采用透射电镜、扫描电镜、能谱分析、Tafel曲线、计时-电位法(E-T曲线)和析氢测量等现代分析测试方法研究了不同轧制温度的Al-Mg-Sn-Bi-Ga-In铝合金阳极的显微组织变化及其在80℃,添加Na2SnO3缓蚀剂的5 mol/L NaOH电解液中的电化学性能和耐腐蚀性能。结果表明:当控制道次变形量为40%时,随着轧制温度的升高,铝合金阳极的显微组织经历了从位错胞状组织、亚晶组织到动态再结晶组织的转变过程。在轧制温度为420℃进行轧制时,合金中Sn和In等活性元素分布均匀,偏析相减少,铝合金阳极电极电位负移至-1.48V(vs•Hg/HgO)左右,析氢腐蚀速率也降为0.1716 mL/(cm2•min),说明该轧制工艺条件下,铝合金阳极电化学综合性能较好。

关键词 : 轧制温度,  铝合金阳极,  显微组织,  电化学性能,  耐腐蚀性能    
Abstract:

Modern testing techniques such as TEM, SEM, EDAX, Tafel curves, E-T curves and hydrogen collection test have been applied to analyze the effect of rolling temperature on the microstructure, electrochemical and anti-corrosion properties of Al-Mg-Sn-Bi-Ga-In alloy anode in alkaline solution (80℃, Na2SnO3+5 mol/L NaOH). The results show that when controlling the pass deformation at 40\%, with the increase of rolling temperature, the microstructure of Al alloy anode undergoes a process from disordered dislocations cell structure, subgrain structure to dynamic recrystallized structure. When the rolling temperature is 420℃, the Al alloy anode has the most negative electrode potential of about -1.48 V(vs•Hg/HgO) and the lowest hydrogen evolution rate of 0.1716 mL•cm-2•min-1 due to the uniform distribution of active elements and decrease of segregation phases in alloy. The optimum comprehensive performance of Al alloy anode has been obtained.

Key words: rolling temperature    Al alloy anode    microstructure    electrochemical property    anti-corrosion property
收稿日期: 2009-02-23     
ZTFLH: 

TM911.41

 
基金资助:

国家自然科学基金项目(50721003)资助

通讯作者: 张勇     E-mail: cw04zhangyong@126.com
Corresponding author: zhiwei M AO     E-mail: cw04zhangyong@126.com
作者简介: 梁叔全,男,1962年生,教授,研究方向为铝合金阳极材料的研究

引用本文:

梁叔全,张勇,官迪凯,谭小平,唐艳,毛志伟. 轧制温度对铝阳极Al-Mg-Sn-Bi-Ga-In组织和性能的影响[J]. 中国腐蚀与防护学报, 2010, 30(4): 295-299.
MAO Zhi-Wei, LIANG Shu-Quan. EFFECT OF ROLLING TEMPERATURE ON MICROSTRUCTURE AND PERFORMANCES OF Al-Mg-Sn-Bi-Ga-In ALLOY ANODE. J Chin Soc Corr Pro, 2010, 30(4): 295-299.

链接本文:

https://www.jcscp.org/CN/      或      https://www.jcscp.org/CN/Y2010/V30/I4/295

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