摘要
采用涂料流涂法在钛合金表面制备了含纳米镍粉的高温陶瓷涂层。通过金相观察、扫描电镜以及能谱分析,研究了真空热处理对含纳米Ni粉高温陶瓷涂层组织结构的影响,讨论了钛合金基体/含纳米Ni粉陶瓷涂层界面元素的扩散规律。结果表明,在900℃下,涂层中主要元素Si向金属基体扩散,而基体中的Ti元素向涂层扩散,在涂层一侧的界面处形成Ti5Si3化合物层;同时涂层中的Al元素向金属基体扩散,在基体一侧的界面处形成Ti3Al化合物层;并随着扩散时间的延长,界面处两中间化合物层增厚。
A high-temperature ceramic coating with nickel nano-particles has been prepared on titanium alloy by flow coating process. OM, SEM, EDS were used to analyze the influence of vacuum heat treatment on the mierostrueture of the Ni-powder-eontaining ceramic coating and the elements diffusion behaviors on the interface of Ti alloy/ Ni-powder-eontaining ceramic coating. The results show that the main element Si in the coating diffuses into the substrate at 900℃ while the element Ti in the substrate into the coating, forming a Ti5 Si3 layer at the interface along one side of the coating. At the same time, a Ti3Al layer appears at the interface along the substrate because the element Al in the coating diffuses into the substrate. With the diffusiong continuing, the thickness of the intermetallie compound layers at the interface increases.
出处
《矿冶工程》
CAS
CSCD
北大核心
2008年第2期91-93,共3页
Mining and Metallurgical Engineering
基金
国防预先研究项目(MKPT0489)
关键词
陶瓷
高温涂层
含纳米镍粉涂层
真空热处理
显微组织
扩散
ceramic
high-temperature coating
nano-nickel-containing coating
vacuum heat treatment
microstructure
diffusion
