抄録
Characteristics of 60Cu-40Zn brass powder compacts and their extruded materials were investigated. In 60Cu-40Zn brass powder billets consolidated by spark sintering, no vaporization of zinc occurred, and sintered billets with a high density over 99.9 % were obtained. These billets also had high tensile strength and elongation as well as cast brass ingots with the same composition. By the conditions of spark sintering; pressure of 40 MPa, temperature of 1053 K, sintering time of 1.8 ks, the extruded material of 60Cu-40Zn brass powder had an elongation over 50 %. Deformability for collapse test of the pipe extruded specimens also was high by spark sintering because of increasing α phase in extruded materials.
