李成涛,刘飞华,李岩,程学群,董超芳,李晓刚

• 1:苏州热工研究院寿命评估中心
• 2:北京科技大学腐蚀与防护教育部重点实验室(B类)

摘要(Abstract)：

采用SEM方法研究不同温度固溶处理的690合金组织结构,利用动电位极化、电化学阻抗和局部电化学交流阻抗(LEIS)等方法研究了其在NaOH溶液中的电化学行为。SEM结果表明,固溶处理温度1095℃的690合金的晶粒较大,晶界上分布着连续的碳化物。极化曲线结果表明,固溶处理温度1090℃的690合金在氢氧化钠溶液中的电流密度最大;电化学阻抗表明,固溶处理温度1100℃的690合金在氢氧化钠溶液中的阻抗模值较大。局部电化学交流阻抗谱表明,不同温度固溶处理的690合金在氢氧化钠溶液中的电化学阻抗具有明显不同的分布特征。

关键词(KeyWords)： 690合金;固溶处理;SEM;电化学阻抗;局部电化学交流阻抗

Abstract:

Keywords:

基金项目(Foundation): 国家高技术研究发展(“863”)计划(2008AA031703);; 国家科技基础条件平台建设项目(2005DKA10400)

作者(Author): 李成涛,刘飞华,李岩,程学群,董超芳,李晓刚

DOI: 10.13289/j.issn.1009-6264.2011.09.006

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