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WJ911196 复杂的真空热处理工艺制取超导体——《Heat Treating》,1990,V22,№9,28～29,(英) 介绍美国麻省理工学院在美国能源部资助下开发的处理超导体磁铁的工艺概况。第一阶段,先在10~2Pa(Imbar)的真空及氩分压下,使工件加热到200～220℃,历时72h。第二阶段真空度提高到6.7×10~(-2)Pa(6.7×10~(-4)mbar),温度升到340℃,96h。第三阶段温度继续升到650℃,并在真空下保温200h。最后,在真空下逐渐降温到260℃,再充氩快速冷却。图3幅。
WJ911196 Complicated Vacuum Heat Treatment Process for Making Superconductors - “Heat Treating”, 1990, V22, № 9, 28-29, (英) Introduction to MIT’s process overview of processing superconducting magnets developed by the US Department of Energy . The first stage, the first 10 ~ 2Pa (Imbar) vacuum and argon partial pressure, the workpiece was heated to 200 ~ 220 ℃, lasted 72h. In the second stage, the vacuum degree increased to 6.7 × 10 -2 Pa (6.7 × 10 -4 mbar), and the temperature rose to 340 ℃ and 96 h. The third stage temperature continued to rise to 650 ℃, and incubated in vacuum 200h. Finally, the temperature was gradually reduced to 260 ° C under vacuum and then rapidly cooled with argon. Figure 3 frame.