| 摘要 |
PURPOSE:To define a fitness to a sample holder material for measuring Ic of any quality of materials by holding and fixing a sample superconducting wire onto a plate, on which the state in which the fibers of FRP are woven appears, as a sample holder. CONSTITUTION:A FRP material in accordance with NEMA standards in U.S.A is prepared, and superconducting wires thermally treated under the same conditions are set to a sample holder 7 material and an Ic value obtained by measuring the change of critical currents Ic values by a G-10 is acquired as a reference. A base material for FRP is a fibrous woven fabric 8, and a high stable Ic value is acquired when a sample superconducting wire 6 is set onto a plate A on which the woven fabric appears. Accordingly, the stable high Ic value can be obtained when insulating fibers are employed in FRP as the sample holder material 7. |
