【摘要】 采用大功率EB-PVD工艺在NiO-YSZ多孔基体上制备了20μm厚的YSZ电解质涂层材料。SEM分析表明制备态涂层表面由1μm～10μm的晶粒组成并含有少量微米级的孔隙,涂层材料的断面SEM表明涂层致密并和基体结合良好。EPMA分析显示初始蒸发阶段制备的涂层材料内Y,O元素分布均匀,Zr元素的分布存在一个梯度。XRD分析表明:涂层为典型的立方相结构并表现出择优取向特征。更多还原

【Abstract】 YSZ electrolyte coating was prepared on a NiO-YSZ porous substrate by EB-PVD process with a high power.SEM analysis showed that crystal grains of as-deposited coating were in the range of 1μm～10μm and small pores with the magnitude of micron existed between them.SEM observation of the cross-section showed that the coating was dense and there was a good adhesion between the as-deposited coating and substrate.The result of EPMA exhibited that the distribution of Y,O was uniform but Zr had a gradient distribution along the cross-section of the coating during the time of initial evaporation.The result of XRD analysis demonstrated that the diffraction patterns of coatings showed the lines of cubic fluorite-type structure and a preferred orientation.更多还原