朱秋瑜,秦建新

• 1:西北工业大学伦敦玛丽女王大学工程学院
• 2:华能邯峰电厂

摘要(Abstract)：

在低氮氧燃烧技术及深度调峰技术广泛应用的背景下，锅炉水冷壁管在服役过程中的高温腐蚀失效更为严重。对比研究了取自某电厂锅炉水冷壁管及高速电弧喷涂PS45涂层管的高温腐蚀行为特征，利用SEM、EDS、XRD等手段对腐蚀表面形貌特征、腐蚀产物组成及腐蚀截面特征进行了系统分析。结果表明：高速电弧喷涂PS45涂层可有效提高水冷壁管的抗高温腐蚀性能，其表面腐蚀层厚度较小；在高温服役过程中，PS45涂层因其高Cr、Ni元素而表现出更好的抗腐蚀性能，其表面腐蚀产物层较薄，但涂层粒子间的微观孔隙会导致高温腐蚀反应的侵入，甚至导致涂层/基材界面处水冷壁管的直接腐蚀。

关键词(KeyWords)： 水冷壁;高温腐蚀;腐蚀机理;电弧喷涂;NiCr涂层

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 朱秋瑜,秦建新

DOI: 10.19666/j.rlfd.202405087

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