Oxidation and Hot Corrosion Behavior of Thermal Barrier Coatings-A Brief Review

IF 2.1 3区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Oxidation of Metals Pub Date : 2023-04-04 DOI:10.1007/s11085-023-10160-8

Pallabi Roy, Sumana Ghosh

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Abstract

Oxidation and hot corrosion occur on metallic parts of gas turbines on account of exposure to high temperature. Thermal barrier coatings (TBCs) are used to protect gas turbine components made of Ni-based superalloys from high temperature oxidation as well as hot corrosion. The stability of coated metallic gas turbine components is higher than that of non-coated ones. Suitable coating is crucial for obtaining higher turbine inlet temperature. However, the problem of conventional TBC system is the failure of yittria-stabilized zirconia (YSZ) top coat due to formation of thermally grown oxide (TGO) layer between the bond coat and YSZ top coat. The TGO formation should be properly controlled in order to prevent the spallation of the top coat. In the current review paper, an attempt has been made to focus oxidation and hot corrosion behavior of conventional thermal barrier coatings applied on gas turbine components for increasing the efficiency of gas turbines.

Graphical Abstract

Abstract Image

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热障涂层的氧化和热腐蚀行为综述

由于暴露在高温下，燃气轮机的金属部件会发生氧化和热腐蚀。热障涂层(tbc)用于保护由镍基高温合金制成的燃气轮机部件免受高温氧化和热腐蚀。涂层金属燃气轮机部件的稳定性高于未涂层金属燃气轮机部件。合适的涂层是获得较高涡轮进口温度的关键。然而，传统的TBC体系存在的问题是，由于在键合层和YSZ面涂层之间形成热生长氧化物(TGO)层，导致氧化钇稳定氧化锆(YSZ)面涂层失效。应适当控制TGO的形成，以防止面漆剥落。为了提高燃气轮机的效率，本文试图对燃气轮机部件上的传统热障涂层的氧化和热腐蚀行为进行研究。图形抽象

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来源期刊

Oxidation of Metals 工程技术-冶金工程

CiteScore

5.10

自引率

9.10%

发文量

审稿时长

2.2 months

期刊介绍： Oxidation of Metals is the premier source for the rapid dissemination of current research on all aspects of the science of gas-solid reactions at temperatures greater than about 400˚C, with primary focus on the high-temperature corrosion of bulk and coated systems. This authoritative bi-monthly publishes original scientific papers on kinetics, mechanisms, studies of scales from structural and morphological viewpoints, transport properties in scales, phase-boundary reactions, and much more. Articles may discuss both theoretical and experimental work related to gas-solid reactions at the surface or near-surface of a material exposed to elevated temperatures, including reactions with oxygen, nitrogen, sulfur, carbon and halogens. In addition, Oxidation of Metals publishes the results of frontier research concerned with deposit-induced attack. Review papers and short technical notes are encouraged.