101 タングステン材料の超塑性とそのプラズマ対向機器への応用(超塑性と材料および造形法)

概要

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Since tungsten materials have high heat resistance, high thermal shock resistance, high thermal conductivity and excellent erosion resistance, they are particularly expected to be used as a target material of the Japan Proton Accelerator Research Complex(J-PARC)and a plasma facing material of the International Thermonuclear Experimental Reactor(ITER). On the other hand, tungsten materials are low fracture toughness and hard workability, the joining technique with cooling structures is not established yet. Therefore, a new working technique by using of the superplasticity and a joining method with cooling structures have been researched for the improvement of their weak points. In this study, tungsten materials are tested by 3-point bending test and the strain rate jump test at room and high temperatures, and the superplasticity is evaluated. And tungsten materials are joined with a heat sink material for using a plasma facing component and the thermal response is also examined.
2006-09-14