High Temperature Corrosion Resistant and Anti-slagging Coatings for Boilers: A Review

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

Oxidation of Metals Pub Date : 2024-07-10 DOI:10.1007/s11085-024-10251-0

Kritkasem Khantisopon, Surinder Singh, Jaturong Jitputti, Christopher C. Berndt, Andrew S. M. Ang

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Abstract

High temperature corrosion and slag deposition significantly reduce the thermal efficiency and lifespan of biomass-fired boilers. Surface modification with protective coatings can enhance boiler performance and prevent commercial losses due to maintenance and damage. This review focuses on the development of corrosion-resistant coatings (CRCs) and anti-slagging coatings (ASCs) over the past decade. CRCs are explored through thermal spray processes that include arc spray, atmospheric plasma spray (APS), high-velocity oxygen fuel (HVOF), detonation gun (D-gun™), and cold spray. Studies on alloys, ceramics, and ceramic–metal composites are summarised, highlighting the high temperature corrosion prevention mechanisms and discussing new coating materials. ASCs are reviewed in the context of advancements via thermal spray and slurry spray methods. The mechanisms for slag reduction, testing methods to evaluate ASC effectiveness, and the necessary architecture for preventing slag deposition are examined. A lab-based rig simulating fly ash deposition onto water-cooled coating coupons for anti-slagging investigations is also presented. Further research is needed to develop and evaluate materials for ASCs effectively.

Graphical Abstract

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锅炉用耐高温腐蚀和防渣涂层：综述

高温腐蚀和炉渣沉积会大大降低生物质燃烧锅炉的热效率和使用寿命。使用保护性涂层进行表面改性可提高锅炉性能，防止因维护和损坏造成的商业损失。本综述重点介绍过去十年中耐腐蚀涂层（CRC）和防结渣涂层（ASC）的发展情况。通过热喷涂工艺对 CRC 进行了探讨，这些工艺包括电弧喷涂、大气等离子喷涂 (APS)、高速氧气燃料 (HVOF)、爆轰枪 (D-gun™) 和冷喷涂。总结了对合金、陶瓷和陶瓷-金属复合材料的研究，强调了高温防腐蚀机制，并讨论了新型涂层材料。在热喷涂和浆料喷涂方法取得进展的背景下，对 ASC 进行了回顾。研究了减少熔渣的机制、评估 ASC 效果的测试方法以及防止熔渣沉积的必要结构。此外，还介绍了模拟粉煤灰沉积到水冷涂层试样上的实验室设备，用于防渣研究。要有效地开发和评估 ASC 材料，还需要进一步的研究。

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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.