郭平义,曾潮流,邵勇

• 1:江苏科技大学先进焊接技术省重点实验室
• 2:中国科学院金属研究所金属腐蚀与防护国家重点实验室

摘要(Abstract)：

采用高能微弧合金化技术(HEMAA)在K3高温合金上制备NiAl金属间化合物合金化层。通过反复试验,筛选出合适的输出功率、沉积时间、频率等工艺参数,得到均匀致密的微晶合金化层,实现了合金化层与基体之间的冶金结合。对合金化层的显微组织、常温电化学腐蚀以及高温氧化性能进行了研究。无论在酸性含氯离子还是在酸性不含氯离子溶液中,NiAl微晶合金化层的耐蚀性能较电极材料有所提高。在1000℃高温氧化性能显示,无论合金化层还是电极材料都形成连续致密的、粘附性良好的富Al2O3氧化膜,但是由于合金化层制备时产生热裂纹,在裂纹处易生成了富Ni的氧化物,使得其氧化增重比电极材料更大。

关键词(KeyWords)： HEMAA;NiAl;微晶合金化层;腐蚀;高温氧化

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 郭平义,曾潮流,邵勇

DOI: 10.13289/j.issn.1009-6264.2010.11.005

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