極低温真空中におけるマグネット構造材のトライボロジー特性

概要

論文の詳細を見る
Tribological properties of structural materials of a superconducting magnet for a nuclear fusion reactor were investigated at temperatures of 293 K, 77 K and about 5 K in vacuum. Specimen materials were JN 1, JN 2 and SUS 316 L steels, copper and its alloys, and GFRP. The properties of the coefficient of friction against the number of cycles were classified into two groups : smooth friction and fluctuating friction. The latter was caused by the strong adhesion dependent on the material combination and temperature. The coefficient of friction of the smooth friction was low less than 0. 6. The upper coefficient of friction of fluctuating friction reaches more than 3. The temperature dependence of the coefficient of friction was also examined from 5 K to 130 K. Combinations of Cu-Cu and JN 2-cupronickel showed high friction over the temperature, but JN 1-Cu and JN 2-Cu showed clear temperature dependence where the friction was high at temperatures between 45 K and 90 K.
一般社団法人日本機械学会の論文
1994-07-25