在金属Ni基带上用非真空涂覆工艺制备的YBCO厚膜的晶粒形貌  

Grain Morphology of YBCO Coated Superconductors Preparedby the Spin and Printing Process on Ni Substrates

作　　者：刘春芳[1] 杜社军[1] 吴宣[1] 庞瀛[1] 王飞云[1] 刘向宏[1] 冯勇[1] 张平祥[1] 吴晓祖[1] 周廉[1] 

机构地区：[1]西北有色金属研究院,陕西西安710016

出　　处：《稀有金属材料与工程》2002年第5期330-333,共4页Rare Metal Materials and Engineering

摘　　要：在金属Ni基带上,用旋转匀胶(spin)和刷涂(printing)工艺制备了具有c轴择优取向的YBCO厚膜。厚膜表面晶粒呈菊花和多边形状,菊花尺寸在0.2mm～0.5mm左右,最大尺寸达到1mm以上,多边形状晶粒常处在菊花的中心位置。MPMP(改进的粉末熔化工艺粉)试样中主要出现菊花状晶粒,多边形状晶粒基本不出现。PMP(粉末熔化工艺粉)试样中2种形貌晶粒一般同时存在。添加中间层(Ag)之后,菊花状晶粒消失或变得很不明显。X射线衍射分析表明,试样主要由Y123相组成并具有一定的c轴择优取向。The YBCO thick films wit h c-axis preferred orientation were prepared by the spin and printing processes on Ni substrates (cold-rolled Ni, cube textured Ni, and cube textured Ni + self oxided NiO). The results show that the chrysanthemum- (or spherulite) and polygon-shaped grains dominate the microstructure of the YBCO films. The chrysanthemum size is about 0.2 mm similar to 0.5 mm but sometimes reaches I mm, and polygon grains normally appear in the center of the chrysanthemum grains. No. chrysanthemum grains appear in the-thick films prepared on a silver substrate.

关 键 词：非真空涂覆工艺 制备 YBCO厚膜 晶粒形貌 镍基带 

分 类 号：TB43[一般工业技术]