Service conditions and their influence on oxide scale formation on metallic high temperature alloys for application in innovative combustion processes
✍ Scribed by G. Teneva-Kosseva; H. Ackermann; H. Köhne; M. Spähn; S. Richter; J. Mayer
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- German
- Weight
- 332 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0947-5117
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✦ Synopsis
Abstract
The present paper focuses on two aspects: the service conditions of a flame tube in a low‐NO~x~ recirculation burner (maximum temperature experienced by the material: 1000 °C) and the interrelationship between service conditions and both the structure and growth of the oxide scale. The flame tube is exposed to extreme thermal and atmospheric conditions during service. Due to the short burner operation time followed by a pause, rapid changes of the temperature and gaseous environment occur. Three Ni‐based alloys (alloy 602 CA, alloy 603 XL and alloy 693) were investigated in cyclic oxidation tests under typical conditions for the combustion of fuel oil. Flame tube temperature measurements in both the axial and the tangential directions are presented together with results concerning the influence of the fuel quality, duration of the air ventilation after burner shut down and temperature on the thickness and composition of the oxide scale.