Abstract
The effect of temperature on the deuteron solubilities in YSZ and GDC polycrystalline samples was examined by changing the rate of sample cooling following the equilibrium annealing to incorporate deuterons into the samples. From the deuteron concentration profiling by using secondary ion mass spectrometry, the concentration increment of deuterons near the surface of the samples was observed by decreasing cooling rate. It was attributable to the deuteron incorporation into the samples during gradual cooling, indicating the higher solubility at lower temperature region and fast deuteron diffusion along the grain boundaries in YSZ and GDC.
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