Phase, microstructure, and magnetocaloric effect of the large disc LaFe11.6Si1.4 alloy
来源期刊：JOURNAL OF RARE EARTHS2015年第2期
论文作者：陈湘 陈云贵 肖定全 唐永柏
文章页码：182 - 188
摘 要：The large disc LaFe11.6Si1.4 alloy, which was prepared by medium-frequency induction furnace, was annealed at 1503 K for different time. The main phases were 1:13 phase in the edge parts of the large discs alloy; the impurity phases included α-Fe phase, LaFeSi phase, and even very small amount of La5Si3 phase. The amounts of impurity phases reduced with increasing in annealing time. The magnetic properties in the edge parts of the large discs LaFe11.6Si1.4 alloy were investigated. The magnetic susceptibility had an abrupt change at Curie temperature（TC） as the magnetization in M-T curves. The alloys had almost the same TC（191 K）, the magnetocaloric effect（MCE） and relative cooling power（RCP） increased with increasing in annealing time. In addition, for the same alloy, the magnetic hysteresis decreased with the increase in temperature.
陈湘1,2，陈云贵2，肖定全2，唐永柏2
1. Engineering and Technology College, Neijiang Normal University2. School of Materials Science and Engineering, Sichuan University
摘 要：The large disc LaFe11.6Si1.4 alloy, which was prepared by medium-frequency induction furnace, was annealed at 1503 K for different time. The main phases were 1:13 phase in the edge parts of the large discs alloy; the impurity phases included α-Fe phase, LaFeSi phase, and even very small amount of La5Si3 phase. The amounts of impurity phases reduced with increasing in annealing time. The magnetic properties in the edge parts of the large discs LaFe11.6Si1.4 alloy were investigated. The magnetic susceptibility had an abrupt change at Curie temperature（TC） as the magnetization in M-T curves. The alloys had almost the same TC（191 K）, the magnetocaloric effect（MCE） and relative cooling power（RCP） increased with increasing in annealing time. In addition, for the same alloy, the magnetic hysteresis decreased with the increase in temperature.
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