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Calculation of Leakage Currents in Bipolar Electrolyser Stacks

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Detailed equations are derived for leakage currents and these are calculated for 40 & 60 cell stacks. Equivalent circuits are also shown. 18 refs.

Calculation of Limiting Diffusion Currents in Chromium (VI) Solutions.

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Calculation of Limiting Diffusion Currents in Cr(VI) Solutions

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Calculation of Macrostress in Electrodeposits (in) "Properties of Electrodeposits & Their Significance" Ed. H. Leidheiser et. al.

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JES Overview of methods for stress calculation in terms of substrate & conditions of deposition. Equations are given & means of deriving simplified forms of these shown. (Auth. changed his name from Popereka M Ya;)

Calculation of mass transfer coefficients in metal deposition using electrochemical tracer techniques.

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JES A modification of the tracer technique of V.A. Ettel et. Al (1974) was developed for detg. mass-transfer coeffs. in electrolyte for both electrowinning and electrorefining systems. The method involves the direct measurement of the limiting c.d. of a more noble tracer ion at low concn. by cyclic voltammetry techniques in an electrolyte of choice. A Ag+ tracer in acid CuSO4 was used as the example. Addnl. tests were made by codepositing the tracer with Cu to compare the results of the 2 methods. The effect of Cu ion concn. and temp. on the electrochem. and transport properties of the soln. were detd. The results obtained using cyclic voltammetry techniques were found to be in good agreement with those from the std. codeposition detns. Addnl. refinement of the technique is needed to more clearly define the limitations of the technique when used for metal deposition evaluations.

Calculation of Maximum Current Density for Corroding Specimens in the EC Test

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Note shows how max currents giving "realistic results" for the title test can be calc'd. 4 refs.

Calculation of Nitrogen Depth Profiles in Nitrided Multi-Component Ferritic Steel.

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Calculation of Polarisation for Copper Electrodeposition by Periodic Reversal from Pyrophosphate

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92 137612 Russ. Experimental meas'ts yielding the i(o) value & transfer coefficient for Cu dep'n from a pyro bath at pH 9.7 or 7.2 and 50C, were obtained. These values were used to calculate the polarisation values found in periodic reversal plating, and they agreed well with experimentally-found values.

Calculation of potential distribution in anodising of aluminium

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Mathematical approach, also using computer software package BANDVAR, emphasises benefits of uniform potential distributions on quality of products and energy savings. 3 refs. Engl. language version also available.

Calculation of Reaction Current in Cathodically Polarised Nickel Electrode with Superimposed AC

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73 61986 Russ. The effect of amplitude and freq. on current & voltage response of Ni cathode in Watts type bath is reported.

Calculation of residual thermal stresses on the surfaces of steel components in plunge grinding

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Method of determining distribution of temperature on surfaces of components during grinding is proposed. Method involves use of theoretical model and program based on finite elements method.

Calculation of resistance of (ion exchange) resin layer during passage of plating effluent

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Calculation of rinse parameters with MathCad

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Sketch shows rinse cascade system which is basis for this computer simulation and system is defined. Rinse systems in equilibrium and out of equilibrium are considered. Graphs show simulation. An exact solution to the differential equation is derived, and matrix algebra set out. 2 refs

Calculation of rinse water consumption

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Experiments are described which compare theoretical rinse water concn. with practical. Latter show higher concs. of impurities. Reasons are discussed and modified equation is proposed

Calculation of solution concentrations of intermittent multistage rinsing tanks in electroplating workshop

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