Standard enthalpies of formation of dysprosium alloys, Dy + Me (Me = Ni, Ru, Rh, Pd, lr, and Pt), by high-temperature direct synthesis calorimetry

Autor: O. J. Kleppa, Qiti Guo
Rok vydání: 1996
Předmět:
Zdroj: Metallurgical and Materials Transactions B. 27:417-422
ISSN: 1543-1916
1073-5615
DOI: 10.1007/bf02914906
Popis: The standard enthalpies of formation of 13 dysprosium alloys with late transition metals have been determined by direct synthesis calorimetry at 1474 ± 2 K. The following values of Δ f o (kJ (mole atom)−1) are reported: DyNi, -(35.2 ± 1.5); DyNi5, -(27.4 ± 0.7); DyRu2, -(27.3 ± 0.9); DyRh,-(76.5 ± 2.0); DyRh2, -(62.3 ± 0.8); Dy7Rhm3, -(56.8 ± 2.2); DyPd, -(83.3 ± 2.0); Dy3Pd4,-(86.6 ± 2.1); DyPd3,-(76.2 ± 1.5); Dylr2, -(69.9 ± 2.1); DyPt, -(109.4 ± 1.8); DyPt2, -(98.1 ± 2.8); and DyPt3, -(82.8 ± 2.2). The results are compared with predicted values from the Miedema model and with available literature data for DyNi, DyNi5, DyPd, and DyPt.
Databáze: OpenAIRE