A 500 degrees C isothermal section for the Pr-Pt-Co system

作者：Gu, Z. F.; Xu, Ch. F.^*; Huang, Z. F.; Cheng, G.; Jiang, M. H.

来源：Calphad: Computer Coupling of Phase Diagrams and Thermochemistry , 2010, 34(1): 84-89.

DOI：10.1016/j.calphad.2009.12.005

• Pr-Pt-Co alloy system
• Phase diagram
• X-ray diffraction
• SEM observation

The isothermal section of the Pr-Pt-Co ternary system at 500 degrees C has been determined in this study by X-ray diffraction, scanning electron microscopy and energy dispersion spectroscopy techniques. This isothermal cross-section consists 0120 single-phase regions (including solid solution regions of the binary compounds), 37 two-phase regions and 18 three-phase regions. The maximum solid solubility of Pt in Co17Pr2, Co5Pr, Co19Pr5, Co2Pr2, Co3Pr, Co2Pr, Co3Pr4 and CoPr3 is less than 1 at.%Pt, and that of Co in PrPt, Pr3Pt2 and Pr2Pt3 below 1 at.%Co. The PrPt5 phase dissolves up to 15 at.%Co and PrPt2 up to 7.5 at.%Co. The highest solid solubility of Pr in alpha(Co, Pt), epsilon(Co, Pt), alpha(Co, Pt), CoPt3, CoPt and alpha(Pt, Co) is approximately 1.5 at.%Pr. No Co2Pr5 phase and new ternary compounds were found.

• 出版日期2010-3
• 单位桂林电子科技大学; 桂林航天工业学院