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借助X-ray及吸放氢性能测试装置研究了处理条件对非化学计量La(NiMn)5.6合金的结构、活化性能、吸氢容量和平台压力等性能的影响,测试了不同温度(298～333 K)下合金吸放氢性能的PCT曲线。结果表明,无论退火处理还是快速凝固,合金的点阵常数a缩短,c伸长,单胞体积增大。与常规熔铸相比,退火处理和快速凝固均提高了合金的活化性能,且都大大提高了合金的贮氢性能。都使平台压力降低,但快速凝固吸氢量有所降低;快速凝固+低温退火合金的吸氢量最大,在298 K、3.3 MPa下,PCT的最大吸氢原子比(H/M)为1.24。
The effects of processing conditions on the structure, activation performance, hydrogen absorption capacity and platform pressure of non-stoichiometric La (NiMn) 5.6 alloy were investigated by means of X-ray absorption and desorption performance test equipment. K) under the hydrogen absorption and desorption of PCT curve. The results show that whether the annealing or rapid solidification, the alloy lattice constant a shortened, c elongation, single cell volume increases. Compared with the conventional casting, the annealing treatment and rapid solidification all improve the activation properties of the alloy, and both greatly improve the hydrogen storage properties of the alloy. Both of them reduced the pressure of the platform, but the amount of hydrogen absorbed by the rapid solidification decreased. The maximum amount of hydrogen absorbed by the rapid solidification and the low temperature annealed alloy was 1.24 at 298 K and 3.3 MPa, the maximum hydrogen absorption atomic ratio (H / M) of PCT was 1.24 .