Influences of lubricants on the diffusion bonding properties of assembled green compacts based on Fe-Cu-C materials during sintering

摘要

The sinter-diffusion bonding method of assembled inner and outer green compacts consists of same compositions except for lubricants based on Fe-Cu-C materials was investigated. Green compacts added some amount of zinc stearate as lubricants forcompaction show large thermal expansions at higher temperature more than 873K in the rising process during sintering in RX-gas atmosphere. Applying this phenomena, high bonding strength can be obtained by assembling inner green compacts consist of Fe-Cu-C added of zinc stearate as lubricants with outer green compacts consist of same compositions as inner except for lubricants materials which do not contain any zinc, and by sintering in RX-gas atmosphere.