分析了制备工艺过程、球磨设备、试样放置时间以及球磨时间对NaAlH4放氢性能的影响.其中除了试样3是采用高能球磨机外,其它所有试样均采用行星式球磨机.结果表明,这些因素对NaAlH4放氢性能的影响非常明显.试样在球磨过程中经过上下翻转后,其放氢量明显比不翻转高出了50％(质量分数).不同球磨设备研究结果显示,试样3经过高能振动球磨机球磨后,其放氢量比行星式球磨机制备的试样的放氢量明显提高了.试样放置时间与试样球磨时间的研究结果显示,制备好的球磨试样经过24 h放置后,其放氢量明显提高.此外,试样经过不同时间球磨后,其放氢量也有明显的不同.经研究发现,球磨80 min试样的放氢量比球磨100 min和球磨40和60 min试样的放氢量要高,但和其它的影响因素相比,球磨时间对NaAlH4放氢性能的影响相对较小.
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