Kinetics and mechanism of gold dendrite electroformation on C(0001). Activation energy for gold adatom surface diffusion

Article Abstract:

A study was conducted to analyze the kinetics and mechanism of gold dendritic growth on C(0001) by electrodeposition. The gold electrodeposits remained unaltered after imaging. Results indicated that gold surface atom diffusion supports a major function as a rate-determining step in gold dendritic growth. Findings also showed that changes in the gold island shape correlate with the existence of anisotropic energy barriers at step edges.

Anisotropy, Gold, Dendrites, Anisotropy (Physics)

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Interplay of surface diffusion and surface tension in the evolution of solid/liquid interfaces. Deallying of beta-brass in aqueous sodium chloride

Article Abstract:

The dealloying of beta-brass in 0.5 M aqueous NaCl is studied by electrochemical techniques at different temperatures, complemented with in situ scanning tunneling microscopy (STM) imaging. Two different roughness regimes were distinguished in the potential region where the electrodissolution of zinc and the formation of vacancies and copper islands take place.

Usage, Scanning tunneling microscopy, Chemical properties, Sodium chloride

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Solution of the Stefan problem: silver electrodeposition under mass transfer control. The transition from diffusion to advection regime

Article Abstract:

An analytic solution for Fick's equation for 1D solid-phase growth kinetics with a moving front whose position changes at a constant velocity is proposed. The analytic solution involves a first diffusion term that includes exponential correction factor, and a second constant advection term that depends on the front velocity.

Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Silver, Observations, Electric properties, Chemistry, Physical and theoretical, Physical chemistry, Electrodeposition

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