Phases of NiAs family in Cu-Pd-Sn and Au-Pd-Sn systemsстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Phases with with a NiAs based structure have been studied in Au–Pd–Sn and Cu–Pd–Sn sys
tems at 500°C using powder X ray diffraction, X ray structure analysis, and energy dispersive X ray microanalysis. In the Cu–Pd–Sn system, binary phases γ Pd2Sn and Cu6Sn5 both having the Ni2In structure form a phase region (Pd,Cu)2 – xSn, which preserves the Ni2In structure and is confined at 500°C by an L + (Pd,Cu)2 – xSn + ε Cu3Sn three phase region. In the Au–Pd–Sn system, the δ AuSn phase with the NiAs structure and γ Pd2Sn with the Ni2In structure form a single phase region (Pd,Au)2 – xSn, which is bounded at 500°C by an L + (Pd,Au)2 – xSn two phase region; the structure of the ternary phase changes from Ni2In with incompletely filled trigonal prismatic interstices to NiAs. The Pd20Sn13 phase, which crystallizes in the GaGe2Ni4 type structure, penetrates into both ternary systems up to ~5 at % of the third component. The
solubilities of copper and gold in PdSn and Pd2Sn phases, which have structures based on orthorhombically distorted NiAs and Ni2In lattices, respectively, do not exceed 2 at %.