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Growth of nanoparticles in hydrogen-implanted palladium subsurfaces

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Abstract

Solid particles with nanometric dimensions are shown to grow in the opened subsurface of a polycrystalline palladium (Pd) hydrogen-implanted at around 500°C. The particles are Pd in main composition and densely grown on sloping walls of fissured grain boundaries or cracks. The average grain size increases from deeper to shallow regions, suggesting that a negative temperature gradient toward the surface existed along the crack walls. The nanoparticles are certain to arise from the condensation of Pd vapors on the walls, forcing us to assume that hydrogen atoms implanted in an overpopulation heated their implantation zone so strongly as to vaporize Pd.

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  1. Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, 466-8555, Japan

    F. Okuyama

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  1. F. Okuyama
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Okuyama, F. Growth of nanoparticles in hydrogen-implanted palladium subsurfaces. Appl. Phys. A 100, 245–248 (2010). https://doi.org/10.1007/s00339-010-5671-7

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  • DOI: https://doi.org/10.1007/s00339-010-5671-7

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