Please wait a minute...
中国腐蚀与防护学报  2014, Vol. 34 Issue (6): 537-543    DOI: 10.11902/1005.4537.2014.028
  本期目录 | 过刊浏览 |
耐海水腐蚀球墨铸铁成分优化设计及其抗蚀性能
崔君军1,2, 张雅静1, 王琳琳1, 陈晓刚3, 张国志1()
1. 东北大学材料与冶金学院 沈阳 110819
2. 沈阳工学院机械与运载学院 抚顺 113122
3. 铁岭阀门 (集团) 特种阀门有限责任公司 铁岭 112616
Chemical Composition Optimization and Sea Water Corrosion Resistance of a Ductile Cast Iron
CUI Junjun1,2, ZHANG Yajing1, WANG Linlin1, CHEN Xiaogang3, ZHANG Guozhi1()
1. School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China
2. College of Mechanical and Vehicle Engineering , Shenyang Institute of Technology, Fushun 113122, China
3. Special Valve Ltd., Tieling Valve Group, Tieling 112616, China
全文: PDF(6186 KB)   HTML
摘要: 

在不改变耐海水腐蚀球墨铸铁基本元素C,Si,Mn,Cu和Al含量前提下,设计了不同Cr和Ni含量的合金系,采用金相观察、硬度测试、失重法测试、EPMA面扫描分析和极化曲线分析等手段研究了其切削性能和耐海水腐蚀的影响规律,获得了一种耐海水腐蚀球墨铸铁的优化成分。结果表明:Cr,Cu和Si等在材料表面形成一层薄且紧密附着的钝化膜,有利于提高合金铸铁的耐蚀性;Ni可以提高腐蚀过程中基体的电极电位,明显降低球墨铸铁腐蚀电流密度,降低腐蚀速率;当Cr含量为0.6%~0.8% (质量分数) 时,既可以保证切削性能,又能提高耐蚀性。与普通的球墨铸铁相比,成分优化设计的球墨铸铁的耐蚀性明显提高。

关键词 球墨铸铁海水腐蚀成分设计耐蚀性切削性能    
Abstract

Without changing the content of the alloying elements C, Si, Mn, Cu and Al in an ordinary ductile cast iron, of which the influence of the addition of Cr and Ni on the microstructure, mechanical performance and the sea water corrosion resistance was studied by means of metallography observation, hardness and cutting test, weight loss test and polarization curve measurement in sea water, as well as surface EPMA analysis for the corrosion products. Accordingly an optimal chemical composition of that cast iron was acquired. The results showed that elements Cr, Cu and Al are beneficial to the formation of a thin and tightly adherent passive film on the surface, which can enhance the corrosion resistance of the alloyed cast iron. Element Ni can positively rises the corrosion potential and significantly reduce corrosion current density of the alloyed cast iron. As a comprehensive result, the alloyed cast iron with Cr content 0.6%~0.8% (mass fraction) exhibits not only better cutting performance, but also superior corrosion resistance in comparison with the ordinary ductile cast iron.

Key wordsductile cast iron    sea water corrosion    component design    corrosion resistance    cutting performance
    
ZTFLH:  TG174.22  
基金资助:辽宁省工业攻关项目 (2011221005) 和东北大学基本科研业务费项目 (N110302005) 资助
作者简介: null

崔君军,女,1987年生,博士生,研究方向为耐海水腐蚀材料

引用本文:

崔君军, 张雅静, 王琳琳, 陈晓刚, 张国志. 耐海水腐蚀球墨铸铁成分优化设计及其抗蚀性能[J]. 中国腐蚀与防护学报, 2014, 34(6): 537-543.
Junjun CUI, Yajing ZHANG, Linlin WANG, Xiaogang CHEN, Guozhi ZHANG. Chemical Composition Optimization and Sea Water Corrosion Resistance of a Ductile Cast Iron. Journal of Chinese Society for Corrosion and protection, 2014, 34(6): 537-543.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2014.028      或      https://www.jcscp.org/CN/Y2014/V34/I6/537

Sample C Si Al Cu Mn Ni Cr
I 3.6 2.9 0.8 0.5 <0.5 0.8 0
II 3.6 2.9 0.8 0.5 <0.5 0.8 0.4
III 3.6 2.9 0.8 0.5 <0.5 0.8 0.8
IV 3.6 2.9 0.8 0.5 <0.5 0.8 1.2
V 3.6 2.9 0.8 0.5 <0.5 0.8 1.5
VI 3.6 2.9 0.8 0.5 <0.5 1.0 0.6
VII 3.6 2.9 0.8 0.5 <0.5 2.0 0.6
表1  耐海水腐蚀球墨铸铁成分设计
图1  Cr含量为0%~1.5%的试样铸态下的金相组织
图2  Ni含量为1.0%和2.0%的试样铸态下的金相组织
图3  各组试样的硬度值
图4  腐蚀不同时间后试样的腐蚀速率
图5  试样VII腐蚀60 d后的锈层形貌及其中的元素分布
图6  裸样的极化曲线
图7  腐蚀16 d后的极化曲线
Samples Ordinary nodular
cast iron
No. VI No. VII
Before
corrosion
Ecorr / V -0.634 -0.615 -0.541
icorr / 10-5 A 2.554 1.433 1.188
After orrosion
for 16 d
Ecorr / V -0.839 -0.722 -0.733
icorr / 10-5 A 50.94 6.356 3.831
表2  试样VI及VII和普通球铁在不同腐蚀周期的自腐蚀电位和自腐蚀电流
[1] Gu Y D, Zheng Z, Ge W J, et al. The seawater corrosion resistance and mechanical properties of Cu47.5Zr47.5Al5 bulk metallic glass and its composite[J]. J. Non-Cryst. Solids, 2013, 380: 135-140
[2] Le Bozec N, Compere C, L'Her M, et al. Influence of stainless steel surface treatment on the oxygen reduction reaction in seawater[J]. Corros. Sci., 2001, 43(4): 765-786
[3] Xia L T, Wang F Y, Wei H. Effect of graphite morphology on corrosion properties of cast iron in sea water[J]. Corros. Prot., 2002, 23(12): 532-547
[3] (夏兰廷, 王凤英, 韦华. 石墨形态对铸铁海水腐蚀性能的影响[J]. 腐蚀与防护, 2002, 23(12): 532-547)
[4] Kishore, Sampathkumaran P, Seetharamu S. Erosion and abrasion characteristics of high manganese chromium irons[J]. Wear, 2005, 259(1-6): 70-77
[5] Zhou J Y. As-cast Color Metallography[M]. Beijing: Metallurgical Industry Press, 2002, 15-17
[5] (周继扬. 铸铁彩色金相学[M]. 北京: 冶金工业出版社, 2002, 15-17)
[6] Shalaby H M, Attari S, Riad W T, et al. Erosion-corrosion behavior of some cast alloys in seawater[J]. Corrosion, 1992, 48(3): 206-217
[7] Liu T, Chang X T, Teng S L, et al. Electrochemical corrosion behaviour of Fe3Al/ZrO2[J]. J. Chin. Soc. Corros. Prot., 2007, 27(5): 263-268
[7] (刘涛, 常雪婷, 滕少磊等. Fe3Al/ZrO2复合材料海水腐蚀电化学行为[J]. 中国腐蚀与防护学报, 2007, 27(5): 263-268)
[8] Gu K C, Geng X, Wu Y S, et al. Study on seawater corrosion resistant low alloy ductile cast iron[J]. J. Shenyang Univ. Technol., 2007, 29(3): 281-284
[8] (古可成, 耿新, 吴永霜等. 耐海水腐蚀低合金球墨铸铁的初步研究[J]. 沈阳工业大学学报, 2007, 29(3): 281-284)
[9] Nishimura T, Katayama H, Noda K, et al. Effect of sodium chloride on corrosion behavior of low-alloy steel under wet/dry condition[J]. Corrosion, 2000, 56: 934-941
[10] S TMG: 84-94, Standard Practice for Modified Salt Spray Testing[S]
[11] JIS K 5621, Japan Industrial Standards[S]
[1] 黄鹏, 高荣杰, 刘文斌, 尹续保. 盐溶液刻蚀-氟化处理制备X65管线钢镀镍超双疏表面及其耐蚀性研究[J]. 中国腐蚀与防护学报, 2021, 41(1): 96-100.
[2] 包任, 周根树, 李宏伟. 恒电位脉冲电沉积高锡青铜耐蚀镀层工艺研究[J]. 中国腐蚀与防护学报, 2020, 40(6): 585-591.
[3] 翟思昕, 杨幸运, 杨继兰, 顾剑锋. 淬火-配分-回火钢在模拟海水环境中的腐蚀性能研究[J]. 中国腐蚀与防护学报, 2020, 40(5): 398-408.
[4] 刘海霞, 黄峰, 袁玮, 胡骞, 刘静. 690 MPa级高强贝氏体钢在模拟乡村大气中的腐蚀行为[J]. 中国腐蚀与防护学报, 2020, 40(5): 416-424.
[5] 王玉, 吴佳佳, 张盾. 海水环境中异化铁还原菌所致金属材料腐蚀的研究进展[J]. 中国腐蚀与防护学报, 2020, 40(5): 389-397.
[6] 李聪玮, 杜双明, 曾志琳, 刘二勇, 王飞虎, 马付良. 电流密度对Ni-Co-B镀层微观结构及磨蚀性能的影响[J]. 中国腐蚀与防护学报, 2020, 40(5): 439-447.
[7] 曹京宜, 方志刚, 陈晋辉, 陈志雄, 殷文昌, 杨延格, 张伟. 5083铝合金表面单致密微弧氧化膜的制备及其性能研究[J]. 中国腐蚀与防护学报, 2020, 40(3): 251-258.
[8] 王英君, 刘洪雷, 王国军, 董凯辉, 宋影伟, 倪丁瑞. 新型高强稀土Al-Zn-Mg-Cu-Sc铝合金的阳极氧化及其抗腐蚀性能研究[J]. 中国腐蚀与防护学报, 2020, 40(2): 131-138.
[9] 王乐,易丹青,刘会群,蒋龙,冯春. Ru对Ti-6Al-4V合金腐蚀行为的影响及机理研究[J]. 中国腐蚀与防护学报, 2020, 40(1): 25-30.
[10] 武栋才,韩培德. 中温时效处理对SAF2304双相不锈钢耐蚀性的影响[J]. 中国腐蚀与防护学报, 2020, 40(1): 51-56.
[11] 孙晓光,韩晓辉,张星爽,张志毅,李刚卿,董超芳. 超低碳奥氏体不锈钢焊接接头耐腐蚀性及环保型化学钝化工艺研究[J]. 中国腐蚀与防护学报, 2019, 39(4): 345-352.
[12] 程多云,赵晋斌,刘波,姜城,付小倩,程学群. 高镍钢和传统耐候钢在马尔代夫严酷海洋大气环境中的腐蚀行为研究[J]. 中国腐蚀与防护学报, 2019, 39(1): 29-35.
[13] 蓝秀玲,刘光明,周街胜,刘志雷,彭叔森,李茂东. 有机硅/SiO2杂化溶胶改性丙烯酸树脂及性能研究[J]. 中国腐蚀与防护学报, 2018, 38(6): 601-606.
[14] 王志虎, 张菊梅, 白力静, 张国君. AZ91镁合金表面微弧氧化与化学镀铜复合处理层的微观组织与性能[J]. 中国腐蚀与防护学报, 2018, 38(4): 391-396.
[15] 杨钊, 时惠英, 蒋百灵, 葛延峰, 张静, 张曼玉, 李研. 脉冲电流对1050铝合金微弧氧化过程的影响[J]. 中国腐蚀与防护学报, 2018, 38(3): 283-288.