Texture of Electrolytic Platinum Deposited on Polycrystalline Gold |
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Authors: | A N Gavrilov L M Plyasova N A Rudina I Yu Molina G A Tsirlina T Ya Safonova |
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Institution: | (1) Chemistry Faculty, Moscow State University, Vorob'evy Gory 1, Moscow, 119992, Russia;(2) Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, pr. Akademika Lavrent'eva 5, Novosibirsk, 630090, Russia |
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Abstract: | Platinum deposits of submicron thicknesses on polycrystalline gold substrates subjected to different thermal treatments and characterized by texture 200 , 311 , and 220 are characterized by methods of x-ray diffractometry and scanning electron microscopy. No deposits prepared in a potentiostatic mode exhibit a pronounced texture or a reliable correlation between a weak texture of a deposit and the substrate texture. Established is the difference of predominant directions of secondary nucleation–growth of deposit on neighboring grains of the substrate. The assumption that the deposit includes fragments the size of a few tens of micrometers with pronounced texture of different directions is substantiated. |
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Keywords: | platinum electrodeposition texture |
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