Abstract
本研究では，亜鉛めっき鋼板の腐食進行に伴う防食機構の変遷が鋼板中への水素侵入におよぼす影響を明確化するため，乾湿繰り返し腐食環境下における亜鉛めっき鋼板中への水素侵入挙動と腐食に伴う表面状態変化を測定した．その結果，鋼板表面を被覆する亜鉛めっきが腐食し，基材鋼板の露出する面積が増加することで水素透過電流が増加した．さらに基材鋼板の露出面積が増加し亜鉛めっきの残存量が低下すると水素透過電流は低下した．
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