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Coatings 2016, 6(3), 34; doi:10.3390/coatings6030034

An Overview on Corrosion-Resistant Coating Technologies in Biomass/Waste-to-Energy Plants in Recent Decades

Bi-MET Division, Dai-Ichi High Frequency Co., Ltd., 1-6-2, Nihonbashibakuro-Cho, Chuo-Ku, Tokyo 103-0002, Japan
Academic Editor: Alessandro Lavacchi
Received: 10 June 2015 / Revised: 14 March 2016 / Accepted: 21 March 2016 / Published: 5 August 2016
(This article belongs to the Special Issue High Temperature Coatings)

Abstract

Highly efficient electric power generation from biomass/waste fuels becomes an important worldwide issue to prevent global warming. In these plants, severe high-temperature corrosion and erosion-corrosion damage occur in boiler tubes influenced by HCl, SOx gases, and chlorides as contaminants in fuels. Coating technologies become important as a countermeasure for such damage, because of the easy maintenance, cost performance, and ease of application on various materials. In severe corrosive conditions of boilers, formation of dense, homogenous, and tough coating layers, as well as protective oxide layers of corrosion-resistant materials, are important. In the last 30 years, materials and coating processes applied in shop and on site have progressed based on many field observations and the consideration of deterioration mechanisms in order to maintain long lifetimes in the plants. Furthermore, new innovative coatings are now being developed by using advanced precise control, nanotechnologies, etc. This paper introduces recent trends of advanced coating developments and applications, such as weld-overlay, cladding, thermal spray coating, and slurry coating for biomass/waste boilers. Furthermore, the evaluation results of deterioration mechanisms and lifetime of coatings, and the future issue for innovative coatings, are presented. View Full-Text
Keywords: corrosion-resistant coatings; Ni base alloys; boiler tube materials; high-temperature corrosion; erosion corrosion; chlorination; sulfidation; energy from waste; biomass fired boilers; fire-side corrosion in boilers; thermal spray coatings; claddings; overlays; ceramics; cermet corrosion-resistant coatings; Ni base alloys; boiler tube materials; high-temperature corrosion; erosion corrosion; chlorination; sulfidation; energy from waste; biomass fired boilers; fire-side corrosion in boilers; thermal spray coatings; claddings; overlays; ceramics; cermet
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Kawahara, Y. An Overview on Corrosion-Resistant Coating Technologies in Biomass/Waste-to-Energy Plants in Recent Decades. Coatings 2016, 6, 34.

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