{HEAD ~ The process} comprises {TAIL ~ the steps} of adding an element such as Al to a single metal such as Zr which generally forms a tightly bonded hydride, forming intermetallic compounds and then adding hydrogen to the compound to form amorphous phases, i.e., to form hydrides of the intermetallic compounds which are amorphous 
comprises
{ HEAD ~ The process } comprises { TAIL ~ the steps } of adding an element such as Al to a single metal such as Zr which generally forms a tightly bonded hydride , forming intermetallic compounds and then adding hydrogen to the compound to form amorphous phases , i.e. , to form hydrides of the intermetallic compounds which are amorphous
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