低氟TFA-MOD工艺快速制备YBCO超导厚膜的研究  

Rapid Synthesis of YBCO Thick Superconducting Films by Low Fluorine TFA-MOD Method

作　　者：汤潇[1] 索红莉[1] 叶帅[1] 刘敏[1] 吴紫平[1] 周美玲[1] 

机构地区：[1]北京工业大学材料学院,新型功能材料教育部重点实验室,北京100022

出　　处：《无机材料学报》2010年第9期971-974,共4页Journal of Inorganic Materials

基　　金：国家973计划(2006CB601005);北京市自然科学基金(2072004);教育部高等学校全国优秀博士学位论文作者专项基金(200331);北京工业大学111人才工程基金~~

摘　　要：为提高TFA-MOD工艺制备YBCO薄膜的生产效率,实验采用了丙烯酸盐对传统三氟乙酸盐进行部分替换.由于前驱溶液中氟含量的减少,低温预处理过程升温速率可达到300℃/h;并通过对低温预烧工艺中气氛的调整,避免了增稠剂二乙醇胺的添加对薄膜质量造成的不利影响,使其添加上限达到0.75g/5mL.经过工艺改进,单次涂膜厚度可达到1μm.虽然由于厚度的增加,表面有a轴晶粒出现,但薄膜内部仍具有较优的微观结构.其临界电流密度(Jc)及临界转变温度(Tc)分别达到3.5MA/cm2和90K.To elevate the productivity of high critical current YBCO superconducting films by TFA-MOD processing,traditional trifluoroacetate（TFA）was replaced by acrylic acetate partially.Since the fluorine content in precursor solution was decreased,the ramping rate in decomposition process reached 300℃/h.Meanwhile the atmosphere was also adjusted to avoid the fatal effect of diethanolamine（DEA）,and to increase thickness of YBCO film.By increasing the maximum of DEA addition to 0.75g/5mL,the thickness of film reaches 1μm.While some a-axis grains dispersed on the film surface are probably ascribed to the rise of thickness,the YBCO film has good interior microstructures overall.As a result,the highest critical current density is 3.5MA/cm2 and the critical temperature is 90K as well.

关 键 词：YBCO TFA-MOD 丙烯酸 二乙醇胺 

分 类 号：TM26[一般工业技术—材料科学与工程]