曹飞杨,谢敬佩,王淼辉,陈蕴博,鲁思渊,刘恒三

• 1:河南科技大学材料科学与工程学院
• 2:机械科学研究总院先进制造技术研究中心
• 3:清华大学材料学院

摘要(Abstract)：

采用电化学测试和浸泡实验研究了喷射成形H13钢与铸造H13钢的耐腐蚀性能,通过OM、SEM和TEM分析了材料组织对耐蚀性的影响以及腐蚀机理。结果表明:喷射成形H13钢在1050℃淬火后600℃回火时自腐蚀电位最高,耐腐蚀性能最好;喷射成形H13钢的点腐蚀由夹杂物引起,点腐蚀产物在夹杂物周围沉积,造成溶液局部p H下降,加速了腐蚀过程;与铸造H13钢相比,由于喷射成形H13钢组织中存在孔洞,晶界、位错密度大,容易成为点蚀的诱发源,回火后在晶界和马氏体边界析出的大量碳化物造成基体贫Cr,增加了阴阳极的电位差,导致喷射成形H13钢的耐蚀性与铸造H13钢相比稍差。

关键词(KeyWords)： 喷射成形H13钢;组织;耐蚀性;腐蚀机理

Abstract:

Keywords:

基金项目(Foundation): 国家“973”计划项目(2012CB025906)

作者(Author): 曹飞杨,谢敬佩,王淼辉,陈蕴博,鲁思渊,刘恒三

DOI: 10.13289/j.issn.1009-6264.2016.01.029

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