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2010 , Vol. 25 >Issue 9: 971 - 974

DOI: https://doi.org/10.3724/SP.J.1077.2010.00971

研究论文

低氟TFA-MOD工艺快速制备YBCO超导厚膜的研究

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  • (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)

收稿日期: 2009-11-10

  修回日期: 2010-03-29

  网络出版日期: 2010-08-25

基金资助

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

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

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  • (Key Laboratory of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, China)

Received date: 2009-11-10

  Revised date: 2010-03-29

  Online published: 2010-08-25

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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.

关键词： YBCO; TFA-MOD; 丙烯酸; 二乙醇胺

本文引用格式

汤 潇, 索红莉, 叶 帅, 刘 敏, 吴紫平, 周美玲 . 低氟TFA-MOD工艺快速制备YBCO超导厚膜的研究[J]. 无机材料学报, 2010 , 25(9) : 971 -974 . DOI: 10.3724/SP.J.1077.2010.00971

Abstract

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.

Key words： YBCO; TFA-MOD; acrylic acid; diethanolamine

参考文献

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[2] 古宏伟, 杨 坚, 刘慧舟, 等. 10m钇钡铜氧超导带材的研究. 科技导报, 2008, 26(1): 32-37.
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