Hydrogen damage in a power boiler: A study of damage selectivity and conditions

Taro Ichihara,Yoshimasa Amano,Motoi Machida

Engineering Failure Analysis（2023）

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摘要

•Selective hydrogen damage was observed in two boiler evaporator tubes.•A transient reduction in water quality initiated the corrosion and hydrogen damage.•A thick iron oxide scale was formed, which weakened the tube.•Thin evaporation residue accumulated on older tubes had a protective effect.•Scale removal with acid may worsen selective corrosion in hydrogen-damaged areas.

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关键词

1- Field of engineering (mandatory, Choose one),Power generation,2- Name of component or system (mandatory, choose one),Boiler,3- Component material (mandatory, choose one),Steel,4- Component manufacturing process (non-mandatory, choose one),Electric resistance welding (ERW),5- The principal methodology (mandatory, choose one),Microscopic characterisation and microanalysis

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