Faraday's laws in one equation

Strong, Frederick C.

doi:10.1021/ed038p98

Cited by 45 publications

(22 citation statements)

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“…The duration of the electrolysis process determines the depth and concentration of Cl in the multi‐Se matrix. This process is quantitatively described by a combination of the Faraday's law of electrolysis and the Fick's laws of diffusion . The Faraday's law is expressed as

m = \frac{M}{F z} I t

where m is is the mass of product at the surface of the electrolysis, M is the molar mass, F is the Faraday's constant, z is the electrovalence, I is the electrolysis current and t is the duration of the electrolysis process.…”

Section: Resultsmentioning

confidence: 99%

Modifying the Electronic Properties of Se/n‐Si Heterostructure Using Electrolysis

John

Enomoto

Miyachi

et al. 2018

Physica Status Solidi (b)

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Heterostructures of dissimilar crystalline materials are key in the development of photoelectronic devices. Such structures rely on matching lattice constants for efficient transport. Nevertheless, an amorphous material, amorphous Se is becoming important in high‐energy photoelectronics. Thus there is a need to understand the heterostructures it forms with conventional crystalline materials. Since the transport properties of such heterostructures will be limited by lattice mismatches, methods to improve transport are necessary. We investigated the effect of electrolysis on the electronic properties of Se based multilayer films deposited on n‐type silicon (Se/n‐Si) and showed that conduction and photoresponse can be changed by electrolysis processing. The Se surface of the Se/n‐Si samples was used as an anode in the electrolysis of NaCl solution. Afterwards, the samples were measured using current–voltage and capacitance–voltage variations in dark conditions and under illumination. Electrolysis processed samples showed higher conduction current and photocurrent, compared to samples not used in electrolysis. This is due to the introduction of Cl into the Se, which affects carrier lifetimes: increasing hole lifetime and reducing electron lifetime. We therefore suggest that electrolysis can be applied to modify the electronic properties of Se/n‐Si heterostructures.

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m = \frac{M}{F z} I t

Section: Resultsmentioning

confidence: 99%

Modifying the Electronic Properties of Se/n‐Si Heterostructure Using Electrolysis

John

Enomoto

Miyachi

et al. 2018

Physica Status Solidi (b)

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“…This might be because the corrosion rate of AA7075-T6 in seawater is too fast for rotational speeds in the range of 0.25-2.5 Hz to make a difference [3]. Corrosion rate (mm 3 /s) is generally determined by the current of the sample according to Faraday's law [25,26]. In this study, the current at -0.18 V (7.84 ± 0.06 mA) was, on average, 4.7 % larger than the current at -0.48 V (7.49 ± 0.01 mA) ( Fig.…”

Section: Discussionmentioning

confidence: 99%

Combined Corrosion and Wear of Aluminium Alloy 7075-T6

2016

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The aluminium alloy 7075-T6 is widely used in engineering. In some applications, like slurry transport, corrosion and abrasion occur simultaneously, resulting in early material failure. In the present work, we investigated the combined effect of corrosion and wear on the aluminium alloy 7075-T6. We performed two series of wear experiments to vary the conditions and severity of corrosion environment: chemically by using ethanol, deionized water and seawater, and electrochemically by applying various potentials using a potentiostat in seawater. Results show that, in seawater, the wear rate was higher than in deionized and ethanol; and in the potentiostat experiments, at the anodic potentials, the wear rates were higher than at the open circuit potential and the cathodic potentials. Seawater is the most corrosive one among the three liquids and the corrosion products can be easily removed. When applying anodic potentials, corrosion is accelerated, and the higher wear rate confirms that higher corrosion rate leads to higher wear rate due to the formation and removal of corrosion products during tribocorrosion.

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“…Indeed, using Faraday's law for electrolysis Ehl & Ihde (1954); Strong (1961), we are able to predict the volume of the gas generated provided the current flowing through the electrodes is known. The expression of the Faraday's law for electrolysis is…”

Section: Calibrationmentioning

confidence: 99%

Drop Tower Setup to Study the Diffusion-driven Growth of a Foam Ball in Supersaturated Liquids in Microgravity Conditions

Vega-Martínez

Rodríguez-Rodríguez

Meer

et al. 2017

Microgravity Sci. Technol.

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The diffusion-driven growth of a foam ball is a phenomenon that appears in many manufacturing process as well as in a variety of geological phenomena. Usually these processes are greatly affected by gravity, as foam is much lighter than the surrounding liquid. However, the growth of the foam free of gravity effects is still very relevant, as it is connected to manufacturing in space and to the formation of rocks in meteorites and other small celestial bodies. The aim of this research is to investigate experimentally the growth of a bubble cloud growing in a gas-supersaturated liquid in microgravity conditions. Here, we describe the experiments carried out in the drop tower of the Center of Applied Space Technology and Microgravity (ZARM). In few words, a foam seed is formed with spark-induced cavitation in carbonated water, whose time evolution is recorded with two high-speed cameras. Our preliminary results shed some light on how the size of the foam ball scales with time, in particular at times much longer than what could be studied in normal conditions, i.e. on the surface of the Earth, where the dynamics of the foam is already dominated by gravity after several milliseconds.

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Faraday's laws in one equation

Cited by 45 publications

References 0 publications

Modifying the Electronic Properties of Se/n‐Si Heterostructure Using Electrolysis

Modifying the Electronic Properties of Se/n‐Si Heterostructure Using Electrolysis

Combined Corrosion and Wear of Aluminium Alloy 7075-T6

Drop Tower Setup to Study the Diffusion-driven Growth of a Foam Ball in Supersaturated Liquids in Microgravity Conditions

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