Hot corrosion behavior of boiler tube materials in refuse incineration environment

Thermal spraying has emerged as an important tool of increasingly sophisticated surface engineering technology. The different functions of the coating, such as wear and corrosion resistance, thermal or electrical of insulation can be achieved using different coating techniques and coating materials....

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Bibliographic Details
Published in:Vacuum 2002-05, Vol.65 (3), p.533-540
Main Authors: Yamada, K., Tomono, Y., Morimoto, J., Sasaki, Y., Ohmori, A.
Format: Article
Language:English
Subjects:
Applied sciences
Corrosion
Corrosion prevention
Detonation spraying
Exact sciences and technology
Hot corrosion resistant
Metals. Metallurgy
Ni–Cr alloy coating
Pollution
Refuse incineration plant
Wastes
Water-wall tubes
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Summary:Thermal spraying has emerged as an important tool of increasingly sophisticated surface engineering technology. The different functions of the coating, such as wear and corrosion resistance, thermal or electrical of insulation can be achieved using different coating techniques and coating materials. The purpose of a hot corrosion resistant coating is to serve as a effective solid-state diffusion barrier between oxygen (or other gaseous) and the base metal. The 50%Ni–50%Cr alloy coating produced by the detonation spray method exhibited the most corrosion resistance in a laboratory test. This paper presents the hot corrosion test results of the 50%Ni–50%Cr alloy spray coated boiler tubes at the actual refuse incineration plant. This plant had operated for about 7 years without any problems and the coated tubes are expected to have longer life.
ISSN:0042-207X
1879-2715
DOI:10.1016/S0042-207X(01)00468-7