書誌事項
- タイトル別名
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- Effects of Ash Composition on the Coal Ash Corrosion of Superheater Tube
- カネツキカン ノ セキタンバイ フショク ニ オヨボス ハイソセイ ノ エイキ
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The effect of ash compositions on the coal ash corrosion of SUS 347 H and 17-14 CuMo steel which were the candidate materials of superheater tubes was investigated. The sodiumpottasium molar ratio (Na2NO4/K2SO4) in coal ash deposit influenced the corrosion rate. When the content of Na2SO4 in alkali constituents exceed 90% the corrosion rates were remarkably decreased. Al2O3 and SiO2 which were the main constituents of coal ashes did not influence the corrosion rates. However CaO and MgO remarkably suppressed the corrosion rates, because these oxides inhibited the formation of alkali iron trisulfate, and decreased the acidity of the molten salt. The alkali content in coal ash deposits significantly influenced the corrosivity of ash. Consequently, the corrosion rates increased with the increase of alkali content in the ash deposit.
収録刊行物
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- CORROSION ENGINEERING
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CORROSION ENGINEERING 36 (6), 376-382, 1987
社団法人 腐食防食協会
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詳細情報 詳細情報について
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- CRID
- 1390282681235107200
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- NII論文ID
- 130004731949
- 130006025181
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- NII書誌ID
- AN00225595
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- ISSN
- 18841155
- 00109355
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- NDL書誌ID
- 3145242
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- データソース種別
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- JaLC
- NDL
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