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3.2.2.1. VTiNi<br />
VTiNi was first hydrided with H 2 only. Then VTiNi was analyzed with He at 150<br />
ºC at 40 psig pressure as the control reaction. The pressure data proves (Figure 25) VTiNi<br />
does not interact with pure He.<br />
20<br />
18<br />
Pressure transducer output (mV)<br />
16<br />
14<br />
12<br />
10<br />
Sample cell<br />
Reference cell<br />
8<br />
0 500 1000 1500 2000 2500 3000<br />
time (s)<br />
Figure 25: Pressure transducer output curve for VTiNi heated under He atmosphere.<br />
Then, the DSC cells were filled with a 50% H 2 :He (v/v) mixture and the sample<br />
was subjected to hydriding with heating up to 150 ºC. The associated thermogram (Figure<br />
26) shows two exotherms. The first is due to an undetermined experimental parameter at<br />
60
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