The phase system Cu-Pd-S at 900, 725, 550 and 400 degree C.

Sven Karup-Møller, Emil Makovicky

    Research output: Contribution to journalJournal articleResearchpeer-review


    The condensed Cu-Pd-S system was studied by means of dry syntheses from elements in evacuated silica glass tubes at 900 degrees, 725 degrees, 550 degrees and 400 degrees C. At 900 degrees C the system contains Cu2-xS (with up to 0.7 at.% Pd), PdS, a broad sulfide melt field and continuous Cu-Pd alloy. At 725 degrees the melt field breaks up into 2 melts and Pd4S appears. No melt was found at 550 degrees C. At 550 degrees and 400 degrees C the alloy field is split, containing beta CuPd which dissolves up to 2.6 at.% S. At these temperatures, the system is dominated by Cu2-xS (traces of Pd), Pd4S and Pd2.2S (UP to 15-16.5 at.% S, respectively), PdS (less than or equal to 1at.% Cu, highest at 550 degrees C) and PdS2. With exception of PdS2 these phases are known as minerals. Solubility of Cu in Pd2.2S and Pd4S is an important temperature indicator.
    Original languageEnglish
    JournalNeues Jahrbuch fuer Mineralogie. Monatshefte
    Pages (from-to)551-567
    Publication statusPublished - 1999


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