轧制温度对铝阳极Al-Mg-Sn-Bi-Ga-In组织和性能的影响

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

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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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