Effect of Various Additional Elements on the Properties of Non-Magnetic Elinvar-Type Alloy “Pallagold” in the Palladium and Gold System

抄録

Measurements of the Young’s moduli, Hardness and temperature coefficients of the modulus at room temperature were carried out so as to investigate the effects of 0.1∼3.0% additions of 25 third elements on the properties of Pd–Au alloys “Pallagold”, 45, 50 and 55% Au, when annealed at 1000°C for 1 hr or further heated at 360°C after water quenching and cold working, respectively. The third elements added were Pt, Ir, In, Ta, Ag, Fe, Ni, Co, Mn, Cu, V, Mo, W, Sb, Sn, Zn, Cr, Al, Ti, Si, Cd, Be, Zr, B and Nb. The results show that the Young’s modulus and hardness in the ternary alloys are in general larger than those in the binary alloys, and also that the temperature coefficient of the modulus in negative sign is increased by the addition of the third elements.