贺俊光,文九巴,周旭东,王国伟

• 1:河南科技大学材料科学与工程学院
• 2:太阳雨太阳能有限公司

摘要(Abstract)：

针对Al-7Zn-0.1Sn-0.015Ga(质量分数,%)牺牲阳极的腐蚀均匀性有待进一步提高的问题,采用扫描电镜(SEM)、恒电流极化、动电位极化等方法,研究了退火和固溶处理对其微观组织、电流效率和腐蚀形貌等的影响。结果显示:热处理工艺可减小合金元素的偏析程度,改善合金组织的不均匀性;退火处理使合金的电位正移,自腐蚀电流密度和析氢腐蚀速率升高,且电流效率大大降低,溶解形貌虽有改善但仍不均匀;固溶处理可降低该合金的电位,抑制析氢腐蚀,电流效率虽稍降低但能明显改善合金的腐蚀形貌。经固溶处理后该阳极的电流效率达94.6%,工作电位负而稳定,腐蚀形貌均匀,具有较好的综合电化学性能。

关键词(KeyWords)： 热处理;牺牲阳极;组织;电化学性能

Abstract:

Keywords:

基金项目(Foundation): 河南省科技创新杰出人才计划(094200510019);; 河南省自然科学基金项目(092300410132)

作者(Author): 贺俊光,文九巴,周旭东,王国伟

DOI: 10.13289/j.issn.1009-6264.2013.06.015

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