Abstract：The disproportionations of GdCo5 alloy induced by high-energy ball-milling in heptane and subsequent desorption and recombinations are reported. High-energy ball-milled in heptane for 400 minutes, partial GdCo5 phase of the Gd-Co ingot disproportionate into GdH2+δ and α-Co. Subsequently heating in vacuum from room temperature to 800 ℃, H atom is removed from GdH2+δ and Gd2Co17 phase is formed. Gd2Co17 phase is planar magnetocrystallie anisotropic, while due to the remaining of GdCo5 phase, the product exhibit a coercivity of 460 kA/m. More milling time (600，800 and 1000 min) results in the completed disproportionation of GdCo5 phase and the appearance of α-Co and GdCoC2 phase besides the Gd2Co17 phase. H and C atoms come from the decomposition of heptane. Because there is no GdCo5 phase, the samples are magnetically soft.
冯雪原 耿红民 郜宇超 杜晓波， 闫羽， 王文全， 苏峰. 正庚烷辅助高能球磨引起的GdCo5合金的歧化、脱氢及再结合反应[J]. , 2016, 23(4): 40-43.
FENG Xue-yuan, GENG Hong-min, GAO Yu-chao, DU Xiao-bo, YAN Yu, WANG Wen-quan, SU Feng. Disproportionation of GdCo5 alloy induced by high-energy ball-milling in heptane and subsequent desorption and recombination. , 2016, 23(4): 40-43.
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