M&M材料力学カンファレンス
Online ISSN : 2424-2845
セッションID: GS01
会議情報
GS01 塩水中引張応力下におけるAl合金ダイカストの腐食特性
渡邉 究桑水流 理
著者情報
会議録・要旨集 フリー

詳細
抄録
Effect of tensile stress on the corrosion potential of high pressure die cast aluminum alloy was examined by the tensile test in a corrosive environment with the electrochemical measurement. The aluminum alloy has an oxide film as a corrosion barrier, but the oxide film may partially break by the mechanical stress and the damage leads to a local corrosion such as pitting corrosion by the effect of local cell. To qualitatively evaluate the strength of corrosion fatigue or stress corrosion cracking, the effect of stress on the electrochemical property has to be clarified. The spontaneous potential difference was measured by the three-electrode system during the tensile test, and the relationship between the spontaneous potential and the tensile stress was evaluated. The results showed that the spontaneous potential certainly decreased within the elastic region and saturated after the yielding. The effect of casting skin was also examined, and the spontaneous potential decreased due to the deletion of the casting skin.
著者関連情報
© 2014 一般社団法人 日本機械学会
次の記事
feedback
Top