High temperature corrosion of metallic materials in simulated waste incineration environments at 300–600 °C
✍ Scribed by M. Sánchez Pastén; M. Spiegel
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- German
- Weight
- 192 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0947-5117
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✦ Synopsis
The durability of the materials employed in waste incineration plants is affected by different factors that together result in severe degradation of the materials. The effects of alloying elements, as well as deposit composition and temperature range are investigated in this work. Different alloys were exposed in laboratory experiments to a specifically simulated waste incineration atmosphere N 2 -8 vol.% O 2 -2000 vppm HCl -15 vol.% H 2 O -200 vppm SO 2 at 300-600 C. The samples are covered with different salt mixtures especially chlorides and sulphates. Experiments with PbCl 2 -KCl-ZnCl 2 at 450 C, which is molten, showed catastrophic corrosion, but this was not observed in the case with KCl, which is solid. Mixtures of five different sulphates did not cause significant mass losses at 600 C, but sulphate-chlorided mixtures caused bigger mass losses. The presence of Al and Si in the alloys decreased mass change effects, the presence of Mo in alloys tested showed a negative effect.