【摘 要】
：
The high-temperature oxidation-resistant MoSi2 coating on the Nb substrate was prepared by slurry firing.The structure,compositions and phase distribution of th
【机 构】
：
College of Materials Science and Engineering
论文部分内容阅读
The high-temperature oxidation-resistant MoSi2 coating on the Nb substrate was prepared by slurry firing.The structure,compositions and phase distribution of the coating and the relationship between these features and the oxidation resistance of the coating were investigated by SEM,EDS and XRD.The results indicate that the interface between the coating and the substrate has metallurgic combination,and a transitional layer is formed by diffusion.The multi-layer structure improves the oxidation resistance of the coating.The method of slurry firing to prepare the high-temperature MoSi2 coating on Nb is feasible.The SiO2 scale,which is formed on the surface of the coating by the self-oxidation of MoSi2,prevents the further diffusion of oxygen.
其他文献
随着我国市场经济的不断向前发展，水利水电建筑承包市场竞争激烈，施工企业的利润空间越来越小，这就要求施工企业不断提高项目管理水平。施工成本控制就是重要的途径。施工成本控
Studies on the stability of the equilibrium points of continuous bidirectional associative memory (BAM) neural network have yielded many useful results. A novel
Magnetite was modified by reaction with alkaline solution containing Co2+ and Fe2+ to obtain a cobalt ferrite layer on the surface of particles.The influences o
Evolution of microstructures of alloy MlNi3.75 Co0.75 Mn0.3Al0.2 (Ml-La-rich mischmetal) during the electrochemical hydriding-dehydriding process was studied by
Measurements of wave heights with image sequences from a Charged Coupled Device(CCD) camera were made. Sinusoidal, as well as unidirectional and directional, wa
As one of promising clean coal technologies used to reduce pollutant emission and CO2 discharge, cogasification has been extensively investigated. In this paper
For increased and various communication requirements of modem applications on embedded systems, general purpose protocol stacks and protocol models are not effi