書誌事項
- タイトル別名
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- Effect of Alloying Elements on Atmospheric Corrosion Behavior of Zinc Die-Casting Alloys
- ダイカストヨウ アエン ゴウキン ノ タイキ フショク トクセイ ニ オヨボス ゴウキン ゲンソ ノ エイキョウ
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The effect of alloying elements on the atmospheric corrosion behavior of zinc die-casting alloys was investigated using the cyclic wet and dry test which simulated a diurnal change in specimen temperature and relative humidity in an actual outdoor environment. The deposition amount of chloride ions on the specimen surface was adjusted to 1.0×10-3 and 1.0 g•m-2 by forming of a uniform layer of diluted synthetic seawater. The addition of aluminum and mischmetal (MM) improved the corrosion resistance of zinc die-casting alloys, while that of Cu degraded the corrosion resistance. Polarization measurements indicated that Cu addition promotes the reduction reaction of dissolved oxygen. Corrosion products formed on Cu-containing specimens also promoted the cathodic reaction. On the contrary, the corrosion products on Al-containing and MM-containing alloys had the ability to suppress the anodic reaction. The value of average corrosion depth and the composition of corrosion products in the accelerated corrosion test were compared to those obtained by atmospheric exposure tests. It was concluded that the cyclic wet and dry test, in which diluted synthetic seawater is used as a test solution, is appropriate for an accelerated atmospheric corrosion test for zinc alloys.<br>
収録刊行物
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- 日本金属学会誌
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日本金属学会誌 72 (5), 337-346, 2008
公益社団法人 日本金属学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390282681456673792
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- NII論文ID
- 10021150280
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- NII書誌ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL書誌ID
- 9514293
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可