不同工艺制备的 NiCrAlY 金属键合层的特性和热腐蚀行为

IF 6.6 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY npj Materials Degradation Pub Date : 2024-04-09 DOI:10.1038/s41529-023-00411-z
Weiwei Qu, Zehao Chen, Zhilin Zhang, Xue Li, Fan Yang, Jinlong Wang, Minghui Chen, Shusuo Li, Fuhui Wang
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引用次数: 0

摘要

通过不同的制备方法(APS、HVAF 和 MIP),对镀有三种不同 NiCrAlY 金属键合层的 René N5 合金进行了热腐蚀实验。与裸露的 René N5 合金样品相比,涂层样品的耐热腐蚀性能有所提高。这可能是因为涂层样品表面氧化层的内应力小,不易剥落,降低了热腐蚀反应的程度。NiCrAlY 涂层的耐热腐蚀性能为 MIP > HVAF > APS,与涂层密度呈正相关,这是因为在热腐蚀过程中元素扩散的影响被有效减缓了。
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Characteristics and hot corrosion behavior of NiCrAlY metal bonding layers prepared by different processes
The hot corrosion experiments of René N5 alloy coated with three different NiCrAlY metal bonding layers are carried out, that the layers are prepared by different methods (APS, HVAF and MIP). Compared with bare René N5 alloy samples, the hot corrosion resistance of coated samples is improved. It can be attributed to the small internal stress of the surface oxide layer on the coating sample, which is difficult to spall, reducing the degree of hot corrosion reaction. The hot corrosion resistance of NiCrAlY layers is MIP > HVAF > APS, which is positively positively related to the density of layers, because the influence of element diffusion in the process of hot corrosion is effectively slowed down.
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来源期刊
npj Materials Degradation
npj Materials Degradation MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
7.80
自引率
7.80%
发文量
86
审稿时长
6 weeks
期刊介绍: npj Materials Degradation considers basic and applied research that explores all aspects of the degradation of metallic and non-metallic materials. The journal broadly defines ‘materials degradation’ as a reduction in the ability of a material to perform its task in-service as a result of environmental exposure. The journal covers a broad range of topics including but not limited to: -Degradation of metals, glasses, minerals, polymers, ceramics, cements and composites in natural and engineered environments, as a result of various stimuli -Computational and experimental studies of degradation mechanisms and kinetics -Characterization of degradation by traditional and emerging techniques -New approaches and technologies for enhancing resistance to degradation -Inspection and monitoring techniques for materials in-service, such as sensing technologies
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