Ball milling to improve hydrogen sorption behaviour

4 Ball milling to improve hydrogen sorption behaviour 

Ball milling can also reduce the magnesium hydride decomposition temperature as well as desorption time. A good illustration of this is provided by Varin et al. (2006) who analysed samples of MgH2 milled for time periods 

3 A typical in situ series of X-ray diffractogram (XRD) data for milled MgH2 heated from 150°C to 600°C at 10°Cmin under He. A scan from 24 to 38 in 26 was taken every 50 °C, (Croston, 2007). 

The above example introduces a derivative of ball milling called reactive mechanical alloying (RMA). RMA in a hydrogen atmosphere (Bobet et al., 2003a Geimari et al., 2001 Song et al., 2004 Terzieva et al., 1995 Tessier and Akiba, 1999) rather than an inert Ar atmosphere has some merit. In 

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