Effect of group III A and IV A element substitutions (M) on the hydrogen dissociation pressures of LaNi/sub 5-x/M/sub x/ hydrides
Description: Ternary modifications of the hydrogen absorbing alloy LaNi/sub 5/ have been found to have a large effect on the hydrogen dissociation pressure of the corresponding hydride. A series of alloys LaNi/sub 4/ /sub 6/M/sub 0/ /sub 4/ (M = Al, Ga, In, Sn) were studied to establish the effect of various group III A and IV A element substitutions on the dissociation pressures of their corresponding hydrides. Results were extended to include the alloys LaNi/sub 4/ /sub 6/Si/sub 0/ /sub 4/, LaNi/sub 4/ /sub 6/Ge/sub 0/ /sub 4/ and LaNi/sub 4/ /sub 4/B/sub 0/ /sub 6/. Further dissociation pressure measurements were made on the alloy LaNi/sub 4/ /sub 6/Ga/sub 0/ /sub 4/ as well as two additional indium alloys. The data obtaned for the three indium alloys appear to follow a linear correlation of lnP or ..delta..G with the amount of substituted element as has been previously observed for Al.
Date: January 1, 1979
Creator: Mendelsohn, M.H. & Gruen, D.M.
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