Deterioration of Pt in a Hydrogen Gas Environment
2005 Volume 54 Issue 9 Pages 450-454
Details
2005 Volume 54 Issue 9 Pages 450-454
Deterioration of platinum in hydrogen gas environment was investigated at 340°C by means of the electric resistant measurement, and the following results were obtained;
(1) The electric resistance of platinum wire increased when heated at 340°C in hydrogen for up to 1512h. Increase of 0.09Ω per 200Ω was observed after heating for 1512h.
(2) According to the XRD and EBSP measurements, the increased resistance of platinum wire in hydrogen heated at 340°C was attributed to changes of lattice spacing in Pt crystals. Absorbed hydrogen in platinum resulted in the lattice spacing changes for the crystals.
