据美国《科学美国人》杂志1990年第3期报道,美国亚特兰大佐治亚工艺研究院开发了一种用高温超导材料涂覆在纤维上拉制成导线的工艺。用高温超导体制成的软导线可以绕制性能超群的超导电动机,但制造这种高温超导体软导线是很困难的。现在,佐治亚工艺研究院的研究人员正在解决这一困难,他们把高温超导材料先涂覆在纤维上,然后随纤维一起拉制成导线。工艺研究院的W·杰克·拉基(W.Jack Lackey)及其同伴曾采用一种普遍使用的涂覆新技术-化学汽相沉积。一般的化学汽相沉积是把一种材料一直加热到变成为蒸汽,然后使蒸汽流向另一个沉积室让蒸汽冷凝在一种衬底上。高温超导材料是由钇、钡和铜等元素制成的,具有低的蒸汽压,蒸汽缓慢地向衬底室运动,产生的沉积速度仅1微米/小时,用这种化学汽相沉积技术来生产超导体是相当复 According to the American “Scientific American” magazine in 1990 No. 3 reported that the Georgia Institute of Technology in Atlanta, the United States has developed a high temperature superconducting material coated on the fiber drawn into the wire process. The use of high-temperature superconductor made of flexible wire can be wound super-performance superconducting motor, but the manufacture of such high-temperature superconductor flexible wire is very difficult. Researchers at the Georgia Institute of Technology are now tackling this challenge by coating high-temperature superconducting materials on fibers and then drawing the wires together with the fibers. W.Jack Lackey and his companion at the Institute for Process Research used a commonly used new coating technique, chemical vapor deposition. A typical chemical vapor deposition is to heat a material until it becomes steam and then allow the steam to flow to another deposition chamber to condense the steam on a substrate. High-temperature superconducting materials are made of elements such as yttrium, barium and copper with a low vapor pressure. Steam slowly moves toward the substrate chamber, resulting in a deposition rate of only 1 micron per hour. This chemical vapor deposition technique To produce superconductors is quite complex