The effect of NaCl concentration on impact-sliding fretting corrosion behavior of Inconel 690TT heat transfer tubes

IF 2.3 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Anti-corrosion Methods and Materials Pub Date : 2024-05-07 DOI:10.1108/acmm-02-2024-2965

Yinghong Li, Wei Tan, Wenjie Pei, Guorui Zhu

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引用次数: 0

Abstract

Purpose

The purpose of this paper is to investigate the effect of NaCl solution with different concentrations on impact-sliding fretting corrosion behavior of Inconel 690TT steam generator heat transfer tubes.

Design/methodology/approach

The optical 3D profiler was used to measure the wear profile and calculated the wear volume. Corrosion behavior was studied using open circuit potential monitoring and potentiodynamic polarization testing. The morphologies and elemental distributions of wear scars were analyzed using scanning electron microscopy and energy-dispersive spectroscopy. The synergism of wear and corrosion was analyzed according to the ASTM G119 standard.

Findings

The corrosion tendency reflected by OCP and the corrosion current calculated by Tafel both increased with the increase of NaCl concentration. The total volume loss of the material increased with concentration, and it was known from the synergism that the volume loss caused by corrosion-enhanced wear accounted for the largest proportion, while the wear-enhanced corrosion also made a greater contribution to volume loss than tangential fretting corrosion. Through the analysis of the material morphologies and synergism of wear and corrosion, the damage mechanism was elucidated.

Originality/value

The research findings can provide reference for impact-sliding fretting corrosion behavior of Inconel 690TT heat transfer tubes in NaCl solution with different concentrations.

查看原文本刊更多论文

NaCl 浓度对 Inconel 690TT 传热管冲击-滑动摩擦腐蚀行为的影响

本文旨在研究不同浓度的 NaCl 溶液对 Inconel 690TT 蒸汽发生器换热管冲击-滑动摩擦腐蚀行为的影响。使用开路电位监测和电位极化测试研究了腐蚀行为。使用扫描电子显微镜和能量色散光谱分析了磨损疤痕的形态和元素分布。根据 ASTM G119 标准分析了磨损和腐蚀的协同作用。研究结果 OCP 反映的腐蚀趋势和 Tafel 计算的腐蚀电流都随着 NaCl 浓度的增加而增加。材料的总体积损失随浓度的增加而增加，根据协同作用可知，腐蚀增强磨损造成的体积损失所占比例最大，而磨损增强腐蚀对体积损失的贡献也大于切向摩擦腐蚀。通过对材料形貌和磨损与腐蚀协同作用的分析，阐明了其损伤机理。研究结果可为 Inconel 690TT 传热管在不同浓度的 NaCl 溶液中的冲击滑动烧蚀行为提供参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Anti-corrosion Methods and Materials 工程技术-冶金工程

CiteScore

2.80

自引率

16.70%

发文量

审稿时长

13.5 months

期刊介绍： Anti-Corrosion Methods and Materials publishes a broad coverage of the materials and techniques employed in corrosion prevention. Coverage is essentially of a practical nature and designed to be of material benefit to those working in the field. Proven applications are covered together with company news and new product information. Anti-Corrosion Methods and Materials now also includes research articles that reflect the most interesting and strategically important research and development activities from around the world. Every year, industry pays a massive and rising cost for its corrosion problems. Research and development into new materials, processes and initiatives to combat this loss is increasing, and new findings are constantly coming to light which can help to beat corrosion problems throughout industry. This journal uniquely focuses on these exciting developments to make essential reading for anyone aiming to regain profits lost through corrosion difficulties. • New methods, materials and software • New developments in research and industry • Stainless steels • Protection of structural steelwork • Industry update, conference news, dates and events • Environmental issues • Health & safety, including EC regulations • Corrosion monitoring and plant health assessment • The latest equipment and processes • Corrosion cost and corrosion risk management.