Expedited Award for Novel Research: Directional Solidification of High-Tc Superconductors

新颖研究加急奖：高温超导体的定向凝固

• 批准号: 8806451
• 负责人: Merton Flemings
• 金额: --
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-04-15 至 1989-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8806451&HistoricalAwards=false
• 关键词: Expedited; Award; Novel; Research; Directional

This project deals with the processing of high-temperature ceramic superconducting material to overcome the current limitation of low current density. The approach adopted is to produce selected solidification microstructure that are free of grain boundaries or with grain boundaries or phase boundaries aligned in the growth direction. The directional solidification studies will be made using a) a laser heated floating zone apparatus, and b) a high- temperature, high gradient directional solidification furnace. This work will provide the fundamental basis of solidification to crystal growth of high-temperature superconducting material.

该项目涉及高温陶瓷超导材料的加工，以克服低电流密度的电流限制。 所采用的方法是产生选定的凝固微观结构，该微观结构没有晶界或晶界或相界沿生长方向排列。 定向凝固研究将使用a）激光加热浮区装置和b）高温、高梯度定向凝固炉进行。 该工作将为高温超导材料的凝固到晶体生长提供基础依据。