含 Al 的 Inconel625 合金高温熔盐腐蚀特性研究

IF 4.8 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization Pub Date : 2024-09-20 DOI:10.1016/j.matchar.2024.114397

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引用次数: 0

摘要

Inconel625 (In625) 合金是聚光太阳能（CSP）热接收器的主要材料之一。为了进一步提高热接收器在熔盐中的耐腐蚀性，人们在 In625 合金中加入了可形成氧化膜的 Al 元素。本研究制备了含 3 wt% Al 的 In625 合金，并研究了其在 650 °C 的碳酸盐（Li2CO3-Na2CO3-K2CO3）中的耐腐蚀性。结果表明，在高温熔盐腐蚀过程中，加入的 Al 元素在样品表面形成了一层连续致密的氧化物保护膜（Al2O3 + LiAlO2），从而降低了 In625 合金的腐蚀速率。含 3 wt% Al 的 In625 合金在腐蚀 48 小时和 120 小时后的腐蚀速率分别为 44 μm/year 和 89 μm/year。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Investigation of the high temperature molten salt corrosion properties of Inconel625 alloy with Al

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Investigation of the high temperature molten salt corrosion properties of Inconel625 alloy with Al

The Inconel625 (In625) alloy is one of the main materials in heat receivers of concentrated solar power (CSP). To further improve the corrosion resistance of heat receivers in molten salt, Al element that can form an oxide film was added into In625 alloy. In this study, In625 alloy with 3 wt% Al was prepared, and its corrosion resistance in carbonate (Li₂CO₃-Na₂CO₃-K₂CO₃) at 650 °C was studied. Results showed that a continuous dense oxide protective film (Al₂O₃ + LiAlO₂) in surface of sample was formed by adding Al element during high temperature molten salt corrosion, which reduced the corrosion rate of In625 alloy. The corrosion rate of In625 alloy with 3 wt% Al corroded for 48 h and 120 h were 44 μm/year and 89 μm/year, respectively.

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来源期刊

Materials Characterization 工程技术-材料科学：表征与测试

CiteScore

7.60

自引率

8.50%

发文量

746

审稿时长

36 days

期刊介绍： Materials Characterization features original articles and state-of-the-art reviews on theoretical and practical aspects of the structure and behaviour of materials. The Journal focuses on all characterization techniques, including all forms of microscopy (light, electron, acoustic, etc.,) and analysis (especially microanalysis and surface analytical techniques). Developments in both this wide range of techniques and their application to the quantification of the microstructure of materials are essential facets of the Journal. The Journal provides the Materials Scientist/Engineer with up-to-date information on many types of materials with an underlying theme of explaining the behavior of materials using novel approaches. Materials covered by the journal include: Metals & Alloys Ceramics Nanomaterials Biomedical materials Optical materials Composites Natural Materials.