溶融塩化物環境下におけるMCrAlY溶射皮膜への添加元素の効果(S12 耐環境コーティング材の強度と評価,S-12 耐環境コーティング材の強度と評価)

概要

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In refuse incineration power generation plants, increasing the combustion temperature directly improves plant efficiency. However, due to molten chloride corrosion, the combustion temperature cannot be increased. Consequently, protecting of components from molten chloride corrosion is necessary. In this study, MCrAlY coating was proposed as a protective film against molten chloride corrosion. And also the effects of adding elements to CoNiCrAlY were examined. Four kinds of specimens were prepared. One is a standard CoNiCrAlY coated specimen. The others are Mo blended CoNiCrAlY, mechanically milled CoNiCrAlY, and mechanically alloyed CoNiCrAlY with Mo specimens. These coatings were made by low pressure plasma spraying (LPPS). The specimens were exposed to molten chloride corrosion tests in a NaCl-KCl environment. The results show that mechanically alloyed CoNiCrAlY with Mo has excellent corrosion resistantance.
社団法人日本機械学会の論文
2004-09-04