Effect of Mo Addition on Passive Film of Martensitic Stainless Steels by Semiconductor Analysis in H2S-CO2 Environment

IF 1.1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Pub Date : 2023-03-27 DOI:10.5006/4190

Kyohei Kanki, K. Nishihara, M. Sagara, H. Amaya

引用次数: 0

Abstract

13Cr martensitic stainless steel is widely used in oil and gas industry. It is well known that addition of molybdenum (Mo) enhances the passivity of steel. However, the role of Mo in passive film has not been clarified completely. The subjects of the present research was to reveal role of Mo in terms of semi-conductivity. The Mott–Schottky plot, obtained by impedance spectroscopy, revealed the effect of Mo addition on the semiconducting property of a passive film under an H2S environment in a pH 4.0 solution at 25 °C. The results revealed that Cr-O of the inner film and sulfide of the outer film exhibited semiconductor p-type and n-type characteristics, respectively. The number of defects in the film on 2.5 mass% Mo-added steel was approximately half of that in the film on Mo free steel. The role of Mo was discussed through investigation using X-ray photoelectron spectrometric analysis based on the existent state of the passive films.

查看原文本刊更多论文

在H2S-CO2环境中添加Mo对马氏体不锈钢钝化膜的影响

13Cr马氏体不锈钢广泛应用于石油和天然气工业。众所周知，加入钼可以提高钢的钝化性能。然而，Mo在钝化膜中的作用尚未完全阐明。本研究的主题是揭示钼在半导电性方面的作用。阻抗谱法得到的Mott-Schottky图揭示了Mo添加对H2S环境下钝化膜半导体性能的影响。结果表明，内膜的Cr-O和外膜的硫化物分别表现出半导体p型和n型特征。添加Mo质量% 2.5的钢的薄膜缺陷数约为无Mo钢的一半。在钝化膜存在状态的基础上，通过x射线光电子能谱分析探讨了Mo的作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Corrosion MATERIALS SCIENCE, MULTIDISCIPLINARY-METALLURGY & METALLURGICAL ENGINEERING

CiteScore

2.80

自引率

12.50%

发文量

审稿时长

3 months

期刊介绍： CORROSION is the premier research journal featuring peer-reviewed technical articles from the world’s top researchers and provides a permanent record of progress in the science and technology of corrosion prevention and control. The scope of the journal includes the latest developments in areas of corrosion metallurgy, mechanisms, predictors, cracking (sulfide stress, stress corrosion, hydrogen-induced), passivation, and CO2 corrosion. 70+ years and over 7,100 peer-reviewed articles with advances in corrosion science and engineering have been published in CORROSION. The journal publishes seven article types – original articles, invited critical reviews, technical notes, corrosion communications fast-tracked for rapid publication, special research topic issues, research letters of yearly annual conference student poster sessions, and scientific investigations of field corrosion processes. CORROSION, the Journal of Science and Engineering, serves as an important communication platform for academics, researchers, technical libraries, and universities. Articles considered for CORROSION should have significant permanent value and should accomplish at least one of the following objectives: • Contribute awareness of corrosion phenomena, • Advance understanding of fundamental process, and/or • Further the knowledge of techniques and practices used to reduce corrosion.