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中国腐蚀与防护学报  2018, Vol. 38 Issue (2): 203-209    DOI: 10.11902/1005.4537.2017.030
  研究报告 本期目录 | 过刊浏览 |
含硫化物夹杂铁基块体非晶合金在HCl溶液中的腐蚀行为
黄勇, 王善林(), 王帅星, 龚玉兵, 柯黎明
南昌航空大学 轻合金加工国防重点学科实验室 南昌 330063
Corrosion Resistance of Fe-based Bulk Metallic Glass with Sulfide Inclusions in HCl Solution
Yong HUANG, Shanlin WANG(), Shuaixing WANG, Yubing GONG, Liming KE
Light Alloy Processing Science and Defence Technology Key Laboratory, Nanchang Hangkong University, Nanchang 330063, China
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摘要: 

采用电化学测试技术以及浸泡实验对含硫化物夹杂的铁基块体非晶合金在HCl溶液中的腐蚀行为进行了研究。结果表明,该非晶合金在不同浓度以及不同温度的HCl溶液中均呈现出明显的钝化特征,其耐蚀性能随着溶液浓度和温度的升高而逐渐降低;Nyquist曲线均只有一个容抗弧,电极系统的Faraday过程均由电极电位控制。浸泡腐蚀后的SEM形貌特征表明：硫化物颗粒对铁基非晶合金的腐蚀无明显影响,未诱发明显点蚀。
关键词 ： 硫化物夹杂,  铁基非晶,  耐蚀性能,  HCl溶液    
Abstract：

The corrosion behavior of Fe-based bulk metallic glass with sulfide inclusions in HCl solution was investigated by electrochemical test technique and immersion test. Results showed that the Fe-based bulk metallic glass presented obvious passivation characteristic in solutions with various amount of HCl at different temperature, however its corrosion resistance gradually decreased with the increasing HCl-concentration and temperature. The as-casted amorphous alloy had just only one capacitive loop, which indicated that the faraday process of the electrode system was controlled by the electrode potential. The SEM corrosion morphology after immersion tests showed that sulfide inclusions presented non-obvious influence on the corrosion behavior of Fe-based bulk metallic glass, whilst non-obvious pitting corrosion was triggered.
Key words： sulfide inclusion    Fe-based bulk metallic glass    corrosion resistance    HCl solution
收稿日期: 2017-02-22     
基金资助:国家自然科学基金 (51461031),江西省科技重点研发计划 (20161BBH80031) 和江西省教育厅基金 (GJJ150733)
作者简介:

作者简介 黄勇,男,1989年生,硕士生
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引用本文:

黄勇, 王善林, 王帅星, 龚玉兵, 柯黎明. 含硫化物夹杂铁基块体非晶合金在HCl溶液中的腐蚀行为[J]. 中国腐蚀与防护学报, 2018, 38(2): 203-209.
Yong HUANG, Shanlin WANG, Shuaixing WANG, Yubing GONG, Liming KE. Corrosion Resistance of Fe-based Bulk Metallic Glass with Sulfide Inclusions in HCl Solution. Journal of Chinese Society for Corrosion and protection, 2018, 38(2): 203-209.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2017.030      或      https://www.jcscp.org/CN/Y2018/V38/I2/203

Alloy C Si B P Cr Mn Ti Al Ni Ca O N S Fe
Fe-C 4.28 0.46 --- 0.20 --- 0.20 0.03 --- 0.09 --- --- --- 0.04 94.70
Fe-P 0.02 0.01 --- 26.28 --- 0.69 0.35 --- --- 0.01 --- --- 0.01 72.63
Fe-B 0.17 0.65 19.75 0.04 --- 0.21 --- 0.05 --- --- 0.02 0.01 --- 79.10
Fe-Cr 1.43 0.33 --- 0.02 55.49 --- --- --- --- --- 0.24 0.01 --- 42.48
Fe-S 0.22 1.13 --- --- --- --- --- --- --- --- 1.29 --- 49.7 47.64
表1  工业原材料的化学成分表
图1  块体非晶铸棒的XRD谱
图2  块体非晶铸棒断口形貌和内部A区放大图
图3  夹杂颗粒的EDS分析结果
图4  非晶铸棒在不同浓度的HCl溶液中的动电位极化曲线
C(HCL) / molL-1 Icorr / μAcm-2 Ipass / μAcm-2 Ecorr / V Epit-Epass / V Rs / Ωcm-2 CPE / μFcm-2 Rp / Ωcm-2
0.1 9.57 117.48 -0.38 1.32 50.73 14.28 50177.00
0.5 56.49 682.33 -0.43 1.35 6.96 7.42 43840.00
1 50.12 1166.82 -0.33 1.26 5.88 25.17 20809.00
2 148.25 2297.21 -0.43 1.11 4.29 30.11 16385.00
4 524.81 1548.82 -0.17 1.11 2.61 74.33 16566.00
表2  非晶铸棒在不同浓度的HCl溶液中动电位极化曲线和电化学阻抗谱的电化学参数拟合结果
图5  非晶铸棒在不同浓度HCl溶液中的恒电位阳极极化曲线
图6  非晶铸棒试样在不同浓度HCl溶液中的电化学阻抗谱及其等效电路
图7  非晶铸棒试样在不同温度的HCl溶液中的动电位极化曲线
Temp. / ℃ Icorr / μAcm-2 Ipass / μAcm-2 Ecorr / V Epit-Epass / V Rs / Ωcm-2 CPE / μFcm-2 Rp / Ωcm-2
20 33.88 154.88 -0.32 1.24 5.88 25.17 28209.00
40 111.17 382.82 -0.28 1.21 4.78 108.27 6169.00
60 125.31 954.99 -0.32 1.13 4.00 499.41 733.90
表3  非晶铸棒试样在不同温度下HCl溶液中动电位极化曲线和电化学阻抗谱的部分拟合结果
图8  非晶铸棒试样在不同温度的HCl溶液中的恒电位阳极极化曲线
图9  非晶铸棒试样在不同温度的HCl溶液中的EIS谱
图10  非晶铸棒试样在0.5 mol/L HCl溶液中浸泡不同时间后的腐蚀形貌
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