Understanding the corrosion behavior of additive manufactured 316L stainless steel in supercritical carbon dioxide at high temperature

IF 3.4 3区工程技术 Q2 CHEMISTRY, PHYSICAL

Journal of Supercritical Fluids Pub Date : 2025-06-13 DOI:10.1016/j.supflu.2025.106697

Bin Wu , Nanfu Li , Chao Xiang , Jiazhen Wang , Hongliang Ming , Jianqiu Wang , En-Hou Han

引用次数: 0

Abstract

This study investigates the corrosion behavior of additive manufactured (AM) 316 L stainless steel in supercritical carbon dioxide (sCO₂) at 650°C and 20 MPa. After 3000 h, the corrosion weight gain rate of the horizontal scanning surface (Plane S) was 0.66 mg/cm², significantly higher than the 0.21 mg/cm² for the deposition surface (Plane Z). Differences in corrosion behavior are attributed to the anisotropic microstructure, with Plane S showing more longitudinal corrosion. Both surfaces exhibited carburization, with Plane S displaying deeper carburization due to increased defects in the oxide layer.

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了解添加剂制造的316L不锈钢在超临界二氧化碳中的高温腐蚀行为

本文研究了添加剂制造的（AM） 316 L不锈钢在650℃、20 MPa的超临界二氧化碳（sCO₂）中的腐蚀行为。3000 h后，水平扫描表面（S面）的腐蚀增重率为0.66 mg/cm²，显著高于沉积表面（Z面）的0.21 mg/cm²。腐蚀行为的差异主要归因于各向异性的微观结构，S面表现出更多的纵向腐蚀。两个表面都表现出渗碳，由于氧化层中缺陷的增加，S面渗碳更深。

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

Journal of Supercritical Fluids 工程技术-工程：化工

CiteScore

7.60

自引率

10.30%

发文量

236

审稿时长

56 days

期刊介绍： The Journal of Supercritical Fluids is an international journal devoted to the fundamental and applied aspects of supercritical fluids and processes. Its aim is to provide a focused platform for academic and industrial researchers to report their findings and to have ready access to the advances in this rapidly growing field. Its coverage is multidisciplinary and includes both basic and applied topics. Thermodynamics and phase equilibria, reaction kinetics and rate processes, thermal and transport properties, and all topics related to processing such as separations (extraction, fractionation, purification, chromatography) nucleation and impregnation are within the scope. Accounts of specific engineering applications such as those encountered in food, fuel, natural products, minerals, pharmaceuticals and polymer industries are included. Topics related to high pressure equipment design, analytical techniques, sensors, and process control methodologies are also within the scope of the journal.