The copper - tungsten alloy material and the compound material and its production mannered null

摘要

PROBLEM TO BE SOLVED: To provide a composite material of a copper-tungsten alloy and copper which has excellent reliability in the operation of joining over the whole molded cross-section and excellent joining strength in the joined boundaries, and is free from dissociation fracture from the joined faces, and to provide its production method.;SOLUTION: The composite material of a copper-tungsten alloy and copper is obtained by mutually being joined by hot hydrostatic pressing treatment. The hot hydrostatic pressing treatment is performed at 950 to 1,083°C in a state where the copper-tungsten alloy and copper powder having a mean particle diameter of 5 to 150 μm or a previous molding thereof are stored in a vessel for molding. Thus, the obtained molded material is not fractured on the mutually joined boundaries.;COPYRIGHT: (C)2005,JPO&NCIPI