采用EBSD技术和原子力显微镜(AFM)测试了10CrNi5Mo高强钢热轧态和热处理态试样的表面晶界分布特征和微观形貌,用模拟海水全浸实验方法及电化学阻抗谱技术测试了10CrNi5Mo高强钢在模拟海水中的腐蚀行为.结果表明:热轧态试样表面具有更高比例的小角度晶界,经硝酸酒精腐蚀后热处理态试样表面腐蚀更为均匀,粗糙度更小.进行模拟海水全浸实验时热轧态试样呈现出更好的耐腐蚀性能,浸泡中期阻抗值增大,表面腐蚀产物与基体结合更为紧密,能保护基体防止其与溶液发生电化学反应.
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