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Kinetic parameters in cathodic electrodeposition of palladium I. Impedance measurements

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PROT In aq. electrolyte of chloride & chloride-perchlorate mixt's, meas'ts are reported at rest potential and steady state over potentials at 283 to 343°K. The roles of mass transport and adsorption at the cathode are described.

Kinetic parameters in cathodic electrodeposition of palladium. II. polarisation curves

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PROT Title study in chloride or chloride-perchlorate electrolytes is reported. Deposition was found to be kinetically limited at low c.d's and overvoltages < 0.150V. At < 0.3V, in the mixed electrolyte, mixed kinetics operate. Kinetic parameters incl. activation energy & mass transport coefficients are reported.

Kinetic parameters in cathodic electrodeposition of palladium. II. polarisation curves

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PROT Title study in chloride or chloride-perchlorate electrolytes is reported. Deposition was found to be kinetically limited at low c.d's and over voltages < 0.150V. At < 0.3V, in the mixed electrolyte, mixed kinetics operate. Kinetic parameters incl. activation energy & mass transport coefficients are reported.

Kinetic Parameters of Electroreduction of Chromic Acid to Metallic Chromium

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Polarisation plots are shown for overall & partial electrode reactions in this mechanistic study. 8 refs.

Kinetic Parameters of Gold Dissolution in Cyanide Solutions: Effect of Complex Cyanide Ions of Mercury.

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Kinetic Parameters of Gold Dissolution in Cyanide Solutions: The Effect of Complex Cyanide Ions of Mercury.

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RUS

Kinetic Parameters of Silver Electrodeposition from Nitrate Melts

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RUS Abstract avail. online. (R)

Kinetic Parameters of Silver Electrodeposition from Nitrate Melts

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RUS Abstr. avail. online (RE)

Kinetic regularities and mechanism of formation of nanosize passive films on titanium alloys for medical application and their electrochemical behavior in simulated physiological media.

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Kinetic Regularities Governing the Reaction of Electrodeposition of Iron from Solutions of Citrate Complexes of Iron(III).

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RUS

Kinetic Regularities of Zinc Corrosion in Chromating Baths.

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Kinetic Simulation of Nitride Layer Growth and Properties of Nitrided Steels.

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Kinetic spray coating

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Applying coating of particles incl. those >50µm in size, formed of cohesive layer of particles in solid state; mixing into gas particles of at least 1 of metal and/or alloy, and mixture of polymer(s), ceramic and semiconductor; accelerating mixed gas and particles into supersonic jet to 300-1200m/s; and directing spray onto substrate.

Kinetic spray coatings

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SURF Coatings have been produced by entraining metal powders in an air flow which is accelerated by de Laval type of nozzle. Particles are not melted or thermally softened prior to impingement onto substrate. Process depends primarily on kinetic energy of incident powders. Coatings have low oxide content and low thermal stress, and can exhibit relatively low porosity and high adhesion. Mechanism is not well understood. New high-velocity spray apparatus allows spray parameters to be controlled and monitored. This, with simulations of air and particle velocities and temps., has provided new information on coating process. Al, Cu, and Fe powders were sprayed onto Al, brass, Cu, and steel substrates. Threshold behaviour was observed for coating deposition as function of nozzle inlet air temp., with roughly linear behaviour above threshold. Results are obtained as function of nozzle inlet air pressure and temperature, powder feed rate, and nozzle-substrate stand-off distance. Effect of choice of substrate metal was relatively weak. Results seem consistent with in elastic processes such as plastic deformation and/or partial melting of powder particles on collision with substrate.

Kinetic studies of chromium and aluminium deposition using CVD-FBR on different metallic substrates

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SURF Thermochemical calculations for deposition of Al and Cr using metal- subhalide chemistry were performed by HSC chemistry software. Before depositing, flow regimes that lead to fluidized bed without particle elution were measured at room and deposition temps. Al diffusion coatings were obtained on austenitic AISI 304 stainless steel and IN-100 Ni-base alloy; deposition being much faster on steel substrates. However, Cr diffusion coatings are only achieved on IN-100 Ni-base superalloy since in steel, volatilization of Fe occurs at first stages of deposition.