摘要
研究了磁控溅射法制备的Ni3Si涂层对Ti6Al4V合金在600℃下,抗NaCl/氧气/水蒸气协同腐蚀性能的影响.结果表明,在材料遭受腐蚀的过程中,Ni3Si涂层有效地改善了Ti6Al4V合金抗NaCl/氧气/水蒸气综合腐蚀的能力;而无涂层试样遭受了严重的腐蚀,不仅发生了内氧化,而且有大量的腐蚀产物脱落.利用带能谱的扫描电镜、X射线衍射、电子探针和表面光电子能谱对样品的腐蚀行为进行了分析,并讨论了涂层抗腐蚀的机理.
The effect of Ni3Si coating deposited by magnetron sputtering on the synergic anticorrosion behavior of the alloy Ti6Al4V was investigated at 600 ℃. The results showed that Ni3Si coating possesses excellent resistance to the synergic corrosion due to water vapor, O2 and NaCI because of the SiOx formation on the coating surface in corrosion process, while the alloy suffers from catastrophic corrosion, including not only the inner oxidation but also lots of corrosive products flaking off without the coating. The anticorrosion behavior of the alloy and coating were studied using scanning electron microscopy （SEM）, energy-dispersive spectrometry （EDS）, X-ray diffraction （XRD）, electron probe microanalysis （EPMA） and X-ray photoelectron spectroscopy （XPS）, with the anticorrosion mechanisms of the coatings discussed.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第12期1754-1757,共4页
Journal of Northeastern University(Natural Science)
基金
国家高技术研究发展计划项目(FS01-0331)
