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In the microcavity storage system, high pressure hydrogen i s stored in hollow, glass microspheres, 5-15@m. This report presents the results o f an experimental study t o evaluate the performance of commercially available microspheres f o r this application. Eight grades were evaluated and t h e i r characteristics are presented. A substantial f r a c t i o n of the microsphere beds survived the conditions o f storing hydrogen at pressures of 400 atm. establishing t h a t the concept of high pressure hydrogen storage i s feasible. Information was gathered on the properties of the survivor microspheres. Processes f o r t h e i r selective recovery are being investigated.

A versatile metallurgical furnace for high temperature investigations of metals and alloys is described. Its uses to conduct thermal analysis and thermal treatments on beryllium-iron alloys are described in detail. In order to apply thermal analysis to these alloys, a special thermal crucible was designed and found successful.

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