Deposition and properties of carbonyl molybdenum coatings

Syrkin, V. G.; Prokhorov, V. N.; Romanova, L. N.

doi:10.1007/bf01178208

Cited by 1 publication

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“…The X d time curves calculated using Eq. [7] are incorporated into Figures 8 and 9. It is seen in both figures that the experimental data are, in general, very well reproduced by the model calculation.…”

Section: ½8mentioning

confidence: 99%

“…[1][2][3] This composite could be used even above 1273 K. For example, nickel-coated spherical silica particles are successfully employed to obtain a thermal barrier and abradable sealing layer in plasma or oxygen-acetylene flame thermal spray processes. [4,5] Compared with nickel carbonyl decomposition [6,7] and hydrothermal reduction processes, [8,9] chemical plating process is an easier practice. To the knowledge of the present authors, most of the current chemical plating baths would not be able to produce a nickel layer free from P and B.…”

Section: Introductionmentioning

confidence: 99%

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A Kinetic Study of Nickel Deposition on Spherical Silica Particles and Viscose Fibers by Chemical Plating

Zhang

Sichen

2009

Metall Mater Trans B

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In the present work, nickel silica composite powder was prepared using an ammoniaammonium sulfate system. Optical microphotographs showed that the coated nickel layer was dense and complete. Suitable operation conditions were reported. The composite nickel viscose fiber prepared by this plating system was also investigated. The mechanism of nickel coating on spherical silica particles and viscose fibers by hydrazine reduction was studied. It was found that tiny Pd spots on the surface of particles or fibers acted as active centers for nickel deposition at the initial stage of the process. Thereafter, Ni itself would act as an active center for catching Ni from the solution through the reaction Ni 2+ + 2H ad * fi Ni + 2H + . The rate of the process was found to be controlled by the reaction at the interface, under the present experimental conditions. Kinetic models were proposed on the basis of the experimental results. The model predictions were found to be in agreement with the experimental data.

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Section: ½8mentioning

confidence: 99%