Journal
JOURNAL OF THERMAL SPRAY TECHNOLOGY
Volume 22, Issue 5, Pages 820-827Publisher
SPRINGER
DOI: 10.1007/s11666-012-9876-5
Keywords
amorphous structures; arc spray; boiler materials; erosion resistance
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Funding
- Natural Science Foundation of China [51105129]
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Erosive high-temperature wear in boilers is one of the main causes of downtime and one of the principal engineering problems in these installations. This article discusses the use of FeBSiNb amorphous coatings synthesized by arc spraying to improve elevated-temperature erosion resistance for boiler applications. The influence of test temperature, velocity, and impact angle on material wastage was revealed using air solid particle erosion rig. The experimental results showed that moderate degradation of the coating was predominant at lower impact velocity and impact angles, while severe damage arose for higher velocities and impact angles. The erosion behavior of the coating was sensitive to test temperature. The erosion rates of the coating decreased as a function of environment temperature. The relationship between microstructure and erosion resistance of the coating was also analyzed in details. The FeBSiNb coating had excellent elevated-temperature erosion resistance at temperatures at least up to 600 degrees C during service.
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