ON THE PARTIAL ATOMIC VOLUME AND THE PARTIAL MOLAR ENTHALPY OF ALUMINUM IN SOME PHASES WITH CU AND CU3AU STRUCTURES
ON THE PARTIAL ATOMIC VOLUME AND THE PARTIAL MOLAR ENTHALPY OF ALUMINUM IN SOME PHASES WITH CU AND CU3AU STRUCTURES
复制标题
DOI：
10.1016/0022-5088(91)90062-9
复制
发表时间：
1991-06-15
期刊：
影响因子：
--
通讯作者：
PREDEL, B
中科院分区：
文献类型：
--
作者：
ELLNER, M;KOLATSCHEK, K;PREDEL, B
测量了Co（Al）、Rh（Al）、Ir（Al）、Ni（Al）、Cu（Al）、Ag（Al）和Au（Al）固溶体以及Ni3AI和Ag2Al金属间化合物的晶格参数和宏观密度。研究了A9- al （A9 = Co, Rh, Ir）、A10 - al （A10 = Ni, Pd, Pt）和B11- al （B11 = Cu, Ag, Au）体系的平均原子体积和生成焓与摩尔分数的关系。分析了Cu和CU3Au结构相的偏原子体积和偏摩尔焓。在准同源体系中，铝的偏原子体积值最小，铝的偏摩尔焓值最大的是固溶体A10′（Al）。这表明从铝原子到镍、钯和铂原子的强烈电荷转移。
The lattice parameters and macroscopic densities of the solid solutions of Co(Al), Rh(Al), Ir(Al), Ni(Al), Cu(Al), Ag(Al) and Au(Al) and the intermetallic compounds of Ni3AI and Ag2Al were measured over the whole range of homogeneity. The dependence of both the average atomic volume and the enthalpy of formation on mole fraction was investigated for the systems A9-Al (A9 = Co, Rh, Ir), A1O-Al (A10 = Ni, Pd, Pt) and B11-Al (B11 = Cu, Ag, Au). The partial atomic volume and the partial molar enthalpy of aluminium were analysed for phases with the Cu and CU3Au structures. Among the quasi-homological systems, the smallest values for the partial atomic volume of aluminium and the most negative values for the partial molar enthalpy of aluminium were found in the solid solutions A10' (Al). These indicate a strong charge transfer from aluminium-atoms to atoms of nickel, palladium and platinum.