Please wait a minute...
中国腐蚀与防护学报  2014, Vol. 34 Issue (2): 178-184    DOI: 10.11902/1005.4537.2013.096
  研究报告 本期目录 | 过刊浏览 |
等通道转角挤压Zn-22Al合金在NaCl水溶液中的腐蚀行为
曾许多, 杨丽景, 张阳明, 宋振纶
中国科学院宁波材料技术与工程研究所 宁波 315201
Corrosion Behavior of Equal-channel-angular-pressedZn-22Al Alloys in NaCl Aqueous Solution
ZENG Xuduo, YANG Lijing, ZHANG Yangming, SONG Zhenlun
Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
全文: PDF(8632 KB)   HTML
摘要: 

研究了等通道转角挤压 (ECAP) 工艺处理对Zn-22Al合金耐腐蚀性能的影响,考察了显微组织演变对Zn-22Al合金在3.5% (质量分数) NaCl溶液中的失重及电化学腐蚀行为的影响。结果表明:相比铸态Zn-22Al合金,经过ECAP处理后的试样组织明显细化,晶粒尺寸均匀。晶粒细化导致晶界大量增加及应力增大,试样表面缺陷增多,富铝相被优先腐蚀后,导致被富铝相包围的富锌相脱落,腐蚀速率加快,腐蚀失重随着挤压道次的增加而增加。电化学测试结果表明,随着挤压道次的增加,Zn-22Al合金腐蚀电流密度逐渐增加,腐蚀电位逐渐下降,合金的耐腐蚀性能随挤压道次的增加而逐渐降低。

关键词 锌合金等通道挤压腐蚀    
Abstract:The influence of equal-channel-angular-press (ECAP) process on the corrosion behavior of Zn-22Al alloy in 3.5% (mass fraction) NaCl solution has been studied by means of immersion test and electrochemical measurement. The results showed that the microstructure of the alloy was refined by ECAP process with much uniform grain size distribution rather than that of the as-cast one. Al-rich phase of the ECAP alloy was preferentially corroded in the corrosion process, leading to the isolation and then falling off from the alloy of the Zn-rich phase surrounded by Al-rich phase, therewith the corrosion rate was enhanced. This phenomenon might be ascribed to the increase of grain boundaries, stress and defects of the alloy induced by ECAP process. In general, with the increasing pass of ECAP, the weight loss of the alloy in immersion test increased, while the corrosion current density increased and the corrosion potential decreased, therewith the corrosion resistance was degraded with the increasing ECAP pass for the alloy.
Key wordszinc alloy    ECAP    corrosion
收稿日期: 2013-05-13     
ZTFLH:  TG171  
基金资助:国家自然科学基金项目(51301193) 和宁波市自然科学基金项目 (2012A610057) 资助
通讯作者: songzhenlun@nimte.ac.cn   
作者简介: 曾许多,男,1987年生,硕士生,研究方向为金属腐蚀与防护

引用本文:

曾许多, 杨丽景, 张阳明, 宋振纶. 等通道转角挤压Zn-22Al合金在NaCl水溶液中的腐蚀行为[J]. 中国腐蚀与防护学报, 2014, 34(2): 178-184.
ZENG Xuduo, YANG Lijing, ZHANG Yangming, SONG Zhenlun. Corrosion Behavior of Equal-channel-angular-pressedZn-22Al Alloys in NaCl Aqueous Solution. Journal of Chinese Society for Corrosion and protection, 2014, 34(2): 178-184.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2013.096      或      https://www.jcscp.org/CN/Y2014/V34/I2/178

[1] Valiev R Z, Langdon T G. Principles of equal-channel angular pressing as a processing tool f or grain refinement [J]. Prog. Mater. Sci., 2006, 51: 881-981
[2] Akiyama E, Zhang Z, Watanabe Y, et al. Effects of severe plastic deformation on the corrosion behavior of aluminum alloys [J]. J. Solid State Electrochem., 2009, 13: 277-282
[3] Purcek G, Altan B S, Miskioglu I, et al. Processing of eutectic Zn-5%Al alloy by equal-channel angular pressing [J]. J. Mater. Process. Technol., 2004, 148: 279-287
[4] Cardoso K R, Travessa D N, Botta W J, et al. High strength AA7050 Al alloy processed by ECAP: microstructure and mechanical properties [J]. Mater. Sci. Eng., 2011, A528: 5804-5811
[5] Chen Y J, Chai Y C, Roven H J, et al. Microstructure and mechanical properties of Al-xMg alloys processed by room temperature ECAP [J]. Mater. Sci. Eng., 2012, A545: 139-147
[6] Wang H, Zhou K, Xie G, et al. Microstructure and mechanical properties of an Mg-10Al alloy fabricated by Sb-alloying and ECAP processing [J]. Mater. Sci. Eng., 2013, A560: 787-791
[7] Higuera-Cobos O F, Cabrera J M. Mechanical, microstructural and electrical evolution of commercially pure copper processed by equal channel angular extrusion [J]. Mater. Sci. Eng., 2013, A571: 103-114
[8] Song D, Ma A, Jiang J, et al. Corrosion behavior of ultra-fine grained industrial pure Al fabricated by ECAP [J]. Trans. Nonferrous Met. Soc. China, 2009, 19: 1065-1070
[9] Balyanov A, Kutnyakova J, Amirkhanova N A, et al. Corrosion resistance of ultra fine-grained Ti [J]. Scr. Mater., 2004, 51: 225-229
[10] Zhang Y N, Zhang Y, Luo J H, et al. Effect of equal channel angular pressing on corrrosion behavior of chromiun bronze [J]. Mater. Mech. Eng., 2012, 36(3): 65-68
(张雅妮, 张勇, 罗金恒等. 等通道转角挤压对铬青铜腐蚀行为的影响 [J]. 机械工程材料,2012, 36(3): 65-68)
[11] Song D, Ma A B, Jiang J H, et al. Corrosion behavior of equal-channel-angular-pressed pure magnesium in NaCl aqueous solution [J]. Corros. Sci., 2010, 52: 481-490
[12] Song D, Ma A B, Jiang J H, et al. Corrosion behaviour of bulk ultra-fine grained AZ91D magnesium alloy fabricated by equal-channel angular pressing [J]. Corros. Sci., 2011, 53: 362-373
[13] Ha T K, Son J R, Lee W B, et al. Superplastic deformation of a fine-grained Zn-0.3wt.%Al alloy at room temperature [J]. Mater. Sci. Eng., 2001, A307(1/2): 98-106
[14] Yang L J, Zhang Y M, Song Z L. Influence of aluminium content on corrosion behavior of superplastic Zn-Al Alloys [J]. J. Chin. Soc. Corros. Prot., 2012, 32(6): 491-495
(杨丽景, 张阳明, 宋振纶. 铝含量对超塑性锌合金腐蚀行为的影响 [J]. 中国腐蚀与防护学报, 2012, 32(6): 491-495)
[15] Graedel T E. Corrosion mechanisms for zinc exposed to the atmosphere [J]. J. Electrochem. Soc., 1989, 136: 193C-203C
[16] Zhang X G. Corrosion and Electrochemistry of Zinc [M]. Beijing: Metallurgical Industry Press, 2008
(章小鸽. 锌的腐蚀与电化学 [M]. 北京: 冶金工业出版社, 2008)
[17] Yang L J, Zhang Y M, Zeng X D, et al. Corrosion behaviour of superplastic Zn-Al alloys in simulated acid rain [J]. Corros. Sci., 2012, 59: 229-237
[1] 董续成, 管方, 徐利婷, 段继周, 侯保荣. 海洋环境硫酸盐还原菌对金属材料腐蚀机理的研究进展[J]. 中国腐蚀与防护学报, 2021, 41(1): 1-12.
[2] 唐荣茂, 朱亦晨, 刘光明, 刘永强, 刘欣, 裴锋. Q235钢/导电混凝土在3种典型土壤环境中腐蚀的灰色关联度分析[J]. 中国腐蚀与防护学报, 2021, 41(1): 110-116.
[3] 韩月桐, 张鹏超, 史杰夫, 李婷, 孙俊才. 质子交换膜燃料电池中TA1双极板的表面改性研究[J]. 中国腐蚀与防护学报, 2021, 41(1): 125-130.
[4] 张雨轩, 陈翠颖, 刘宏伟, 李伟华. 铝合金霉菌腐蚀研究进展[J]. 中国腐蚀与防护学报, 2021, 41(1): 13-21.
[5] 冉斗, 孟惠民, 刘星, 李全德, 巩秀芳, 倪荣, 姜英, 龚显龙, 戴君, 隆彬. pH对14Cr12Ni3WMoV不锈钢在含氯溶液中腐蚀行为的影响[J]. 中国腐蚀与防护学报, 2021, 41(1): 51-59.
[6] 左勇, 曹明鹏, 申淼, 杨新梅. MgCl2-NaCl-KCl熔盐体系中金属Mg对316H不锈钢的缓蚀性能研究[J]. 中国腐蚀与防护学报, 2021, 41(1): 80-86.
[7] 王欣彤, 陈旭, 韩镇泽, 李承媛, 王岐山. 硫酸盐还原菌作用下2205双相不锈钢在3.5%NaCl溶液中应力腐蚀开裂行为研究[J]. 中国腐蚀与防护学报, 2021, 41(1): 43-50.
[8] 史昆玉, 吴伟进, 张毅, 万毅, 于传浩. TC4表面沉积Nb涂层在模拟体液环境下的电化学性能研究[J]. 中国腐蚀与防护学报, 2021, 41(1): 71-79.
[9] 郑黎, 王美婷, 于宝义. 镁合金表面冷喷涂技术研究进展[J]. 中国腐蚀与防护学报, 2021, 41(1): 22-28.
[10] 于宏飞, 邵博, 张悦, 杨延格. 2A12铝合金锆基转化膜的制备及性能研究[J]. 中国腐蚀与防护学报, 2021, 41(1): 101-109.
[11] 贾世超, 高佳祺, 郭浩, 王超, 陈杨杨, 李旗, 田一梅. 再生水水质因素对铸铁管道的腐蚀研究[J]. 中国腐蚀与防护学报, 2020, 40(6): 569-576.
[12] 赵鹏雄, 武玮, 淡勇. 空间分辨技术在金属腐蚀原位监测中的应用[J]. 中国腐蚀与防护学报, 2020, 40(6): 495-507.
[13] 马鸣蔚, 赵志浩, 荆思文, 于文峰, 谷义恩, 王旭, 吴明. 17-4 PH不锈钢在含SRB的模拟海水中的应力腐蚀开裂行为研究[J]. 中国腐蚀与防护学报, 2020, 40(6): 523-528.
[14] 岳亮亮, 马保吉. 超声表面滚压对AZ31B镁合金腐蚀行为的影响[J]. 中国腐蚀与防护学报, 2020, 40(6): 560-568.
[15] 艾芳芳, 陈义庆, 钟彬, 李琳, 高鹏, 伞宏宇, 苏显栋. T95油井管在酸性油气田环境中的应力腐蚀开裂行为及机制[J]. 中国腐蚀与防护学报, 2020, 40(5): 469-473.