卢向雨,姚胜,唐俊荣,赵刘明,冯兴国.316L 不锈钢 TIG 焊接接头在 H2 S 溶液中的钝化性能[J].表面技术,2015,44(12):6-11.
LU Xiang-yu,YAO Sheng,TANG Jun-rong,ZHAO Liu-ming,FENG Xing-guo.Passivation Behavior of TIG Welded Joints of 316L Stainless Steel in Solutions with Different Concentrations of H2S[J].Surface Technology,2015,44(12):6-11 |
| 316L 不锈钢 TIG 焊接接头在 H2 S 溶液中的钝化性能 |
| Passivation Behavior of TIG Welded Joints of 316L Stainless Steel in Solutions with Different Concentrations of H2S |
| 投稿时间：2015-09-21 修订日期：2015-12-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2015.12.002 |
| 中文关键词: 316L 不锈钢 钨极惰性气体保护焊 硫化氢溶液 腐蚀 钝化 |
| 英文关键词:316L stainless steel TIG H2 S solution corrosion passivity |
| 基金项目:国家自然科学基金(51301060);江苏省高校自然科学研究项目(14KJB430012);材料腐蚀与防护四川省重点实验室开放基金(2015CL08) |
| 作者 | 单位 |
| 卢向雨 | 1. 江苏科技大学 材料科学与工程学院, 江苏 镇江 212003; 2. 材料腐蚀与防护四川省重点实验室, 四川 自贡 643000 |
| 姚胜 | 江苏科技大学 材料科学与工程学院, 江苏 镇江 212003 |
| 唐俊荣 | 江苏科技大学 材料科学与工程学院, 江苏 镇江 212003 |
| 赵刘明 | 江苏科技大学 材料科学与工程学院, 江苏 镇江 212003 |
| 冯兴国 | 河海大学 港口海岸与近海工程学院, 南京 210098 |
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| Author | Institution |
| LU Xiang-yu | 1. School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China;2. Material Corrosion and Protection Key Laboratory of Sichuan Province, Zigong 643000, China |
| YAO Sheng | School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China |
| TANG Jun-rong | School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China |
| ZHAO Liu-ming | School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China |
| FENG Xing-guo | College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China |
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| 中文摘要: |
| 目的 研究 316L 不锈钢 TIG 焊接接头各区域在不同浓度 H2S 溶液中的钝化及耐蚀性能差异。方法 在 H2S 质量浓度为 0. 05,0. 1,0. 2,0. 4,0. 8 g/ L 的 H2S 溶液中,通过极化曲线、恒电位阶跃、阳极极化、交流阻抗等方法,分别研究 316L 奥氏体不锈钢 TIG 焊接接头的母材区和焊缝区的钝化性及耐蚀性能。 结果 随着 H2S 浓度的增加,焊接接头母材区和焊缝区的钝化性能都所有降低,电化学活性都明显升高,且腐蚀电位逐渐降低,腐蚀电流密度有所增加。 交流阻抗拟合结果显示,母材区和焊缝区的抗腐蚀性能指标(R1+R2)随着 H2S 浓度的升高而降低。 此外,在相同浓度的 H2S 溶液中,焊缝区的腐蚀电位、钝化性能、阻抗都比母材区低,而电化学活性、腐蚀电流密度都比母材区高。 同时,随着 H2S 浓度的升高,焊缝区与母材区的钝化性能、耐腐蚀性差距逐渐变大。 结论 随着 H2S 溶液浓度的增加,316L 不锈钢 TIG焊接接头母材区和焊缝区的钝化性能逐渐降低,耐蚀性下降,且二者耐蚀性的差距逐渐加大。 在相同浓度的 H2S 溶液中,母材区的耐蚀性比焊缝区好。 |
| 英文摘要: |
| Objective To study the difference in the passivation and corrosion behavior of tungsten-arc inert gas (TIG) welded joints of 316L stainless steel in different concentrations of H2S solutions. Methods In 0. 05,0. 1,0. 2,0. 4,0. 8 g/ L H2S solutions, the passivation behavior and corrosion resistance of the base material and the welded zone in TIG joints were investigated by polarization curves, potential step, potentiostatic polarization, and electrochemical impedance spectroscopy (EIS). Results As the concentrations of H2 S increased, the passivity and corrosion potentials decreased, while the activity and corrosion current densities increased. The fitting results of EIS showed that (R1 +R2 ) of the base material and the welded zone in TIG joints decreased with the increased concentrations of H2 S. Meanwhile, the welded zone presented lower corrosion potential, passivity, impedance and higher electrochemical activities and corrosion current densities than the base material at the same concentration of H2 S. Furthermore, the results also suggested that the difference of corrosion resistance between welded zone and base material became significant with the increasing concentration of H2 S. Conclusion As the concentration of H2 S increased, the passivation and corrosion resistance of the base material and the welded zone in TIG joints decreased and the difference of corrosion resistance between them became significant. The base material presented higher corrosion resistance than the welded zone at the same concentration of H2 S. |
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