J Mater Sci Technol ›› 1997, Vol. 13 ›› Issue (1): 21-26.

• Articles • Previous Articles     Next Articles

Alloying Behaviour and Atomic Size Effect in Palladium-rich Pd-RE Systems

Yinan NING and Yuantao NING (Kunming Institute of Precious Metals, Kunming 650221, China)   

  • Received:1997-01-28 Revised:1997-01-28 Online:1997-01-28 Published:2009-10-10

Abstract: The alloying behaviour, including solid solubilities of rare-earths as well as the formation and stability of various intermediate phases in palladium-rich Pd-RE systems were studied by means of the atomic size factor and the reduced transition temperatures. A strong analogy is observed in the plots of the reduced transition temperatures of various intermediate phases against the atomic numbers of rare-earths, and the law proposed by Hume-Rothery and Raynor for dependence of liquidus temperature on atomic radius in simple alloy systems has been extended to more complicated alloy systems.