The B-Li System. Calorimetric and Theoretical Studies / Układ B-Li. Badania Kalorymetryczne I Teoretyczne

Archives of Metallurgy and Materials

M. H. Braga¹  W. Gąsior²  A. Dębski³ 

[1] CEMUC, PHYSICS ENGINEERING DEPARTMENT, ENGINEERING FACULTY OF THE UNIVERSITY OF PORTO, R. DR. ROBERTO FRIAS S/N, 4200-465 PORTO, PORTUGAL.;INSTITUTE OF METALLURGY AND MATERI ALS SCIENCE, POLISH ACADEMY OF SCIENCES, 30-059 KRAKÓW, REYMONTA STREET 25, POLAND;INSTITUTE OF METALLURGY AND MATERIALS SCIENCE, POLISH ACADEMY OF SCIENCES, 30-059 KRAKÓW, REYMONTA STREET 25, POLAND

关键词: Keywords: Phase diagrams;    Thermodynamic and thermochemical properties;    Ab-initio calculations;    Calorimetry;   

DOI  :  10.1515/amm-2015-0407

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

The standard enthalpy of formation of the B78Li22 alloy was measured with the use of the water reaction calorimetric method at 25 °C (298 K). An X-ray diffraction study of the prepared sample was conducted. The obtained diffraction pattern was different from the patterns for the B3Li and B14Li3 phases. The standard enthalpy of formation obtained for the B78Li22 alloy was -39.0 ± 0.7 kJ/mole of atoms. This value corresponds well with the formation enthalpies of the phases from the boron-lithium system. Theoretical calculations of the standard enthalpy of formation were conducted for the B78Li22 alloy and the phases from B-Li system, which were investigated earlier. A discussion of the deviations observed between both sets of data (experimental and calculated) was performed. Additionally, DTA studies were performed for 14 alloys of the concentrations from 40 to 100 at. % of Li.

【 授权许可】

Unknown