Gębara Piotr, Hasiak Mariusz, Kovac Jozef, Rajnak Michal
Department of Physics, Częstochowa University of Technology, Armii Krajowej 19, 42-200 Czestochowa, Poland.
Department of Mechanics, Materials and Biomedical Engineering, Wroclaw University of Science and Technology, Smoluchowskiego 25, 50-370 Wroclaw, Poland.
Materials (Basel). 2022 Oct 16;15(20):7213. doi: 10.3390/ma15207213.
The aim of the present work is to study the phase composition, microstructure and magnetocaloric effect of binary GdPb (where x = 5, 10, 15 and 20) alloys. The XRD and SEM/EDX analysis confirmed a biphasic structure built by Gd(Pb) and GdPb phases. The analysis of M vs. T curves showed the evolution of the Curie point of recognized phases. The temperature dependences of magnetic entropy change revealed two maxima corresponding to the recognized phases. The analysis of the exponent n (Δ = C(B)) confirmed the multiphase composition of the produced alloys. The same behavior was also observed in investigations of mechanical properties.
本工作的目的是研究二元GdPb(其中x = 5、10、15和20)合金的相组成、微观结构和磁热效应。XRD和SEM/EDX分析证实了由Gd(Pb)相和GdPb相构成的双相结构。M对T曲线的分析显示了已识别相的居里点的演变。磁熵变的温度依赖性揭示了与已识别相相对应的两个最大值。指数n(Δ = C(B))的分析证实了所制备合金的多相组成。在力学性能研究中也观察到了相同的行为。