Electroless Nickel Phosphorous:una visión global

Gomes, N.S.; González‐Estrada, Octavio Andrés; Pertuz, A.

doi:10.18273/revuin.v18n4-2019016

Cited by 4 publications

(4 citation statements)

References 48 publications

(46 reference statements)

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“…This electroless metal deposition method has proven successful due to its low initial investment, simple coating conditions, and good results. This method produced a uniform metallic coating with excellent properties on substrates of various shapes and sizes, such as Ni foam, stainless steel mesh, aluminum oxide membranes, carbon materials, Cu sheets, and foam [32,34,36,37,[40][41][42][43][44][45][46][47][48].…”

Section: Introductionmentioning

confidence: 99%

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Non-Precious Metals Catalysts for Hydrogen Generation

Sukackienė,

Valeckytė,

Kepenienė

et al. 2023

Coatings

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In this paper, the generation of hydrogen from alkaline sodium borohydride solution by hydrolysis is studied. To obtain catalysts for efficient hydrogen generation, Ni, Mn, Mo, and Co metals were deposited on the Cu surface by the simple electroless metal deposition method using morpholine borane as a reducing agent. Depending on the peculiarities of the deposition of each metal, the coating thickness was ca. 1 μm for all catalysts. The deposited coatings were compact and crack-free, with multilayer characteristics and a cauliflower-like structure. The prepared Ni/Cu, NiMn/Cu, NiMo/Cu, NiCo/Cu, NiCoMn/Cu, NiCoMo/Cu, and NiCoMoMn/Cu catalysts showed an efficient catalytic activity for sodium borohydride hydrolysis reaction. The lowest activation energy of 45.3 kJ mol−1 for sodium borohydride hydrolysis reaction was obtained using the NiCoMoMn/Cu catalyst. The highest hydrogen generation rate of 3.08 mL min−1 was also achieved using this catalyst at 303 K. With a further increase in temperature to 343 K, the hydrogen generation rate catalyzed by the NiCoMoMn/Cu increased 7.7 times and reached 23.57 mL min−1.

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Section: Introductionmentioning

confidence: 99%

“…Electroless metal deposition covers many metals: Ni, Co, Cu, Pt, Pd, Ru, Rd, W, Ir, Zn, Ba, Mo, Au, and Ag [34,35,[41][42][43]. However, combining several metals in the same coating, especially non-noble metals, with an efficient activity for the reaction required remains a challenge for scientists.…”

Section: Introductionmentioning

confidence: 99%

Non-Precious Metals Catalysts for Hydrogen Generation

Sukackienė,

Valeckytė,

Kepenienė

et al. 2023

Coatings

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“…The phosphorus content depends on the composition of the bath and, therefore, on the pH of the solution. This implies a structural modification [Gomes et al, 2019]. It is worth noting that the heat treatment applied to the electroless nickel coatings causes changes in their microstructure, especially if the coatings have a phosphorus content greater than 9.5%, and that the modifications that include the formation of crystalline Ni and Ni 3 P significantly decrease the corrosion resistance of the deposits.…”

Section: Introductionmentioning

confidence: 99%

Microstructural and Mechanical Characterization of Composite Electroless Ni-P-WC Coatings on Ductile Iron

Valdez¹,

Bolarín²,

Sánchez³

et al. 2022

JER

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This paper presents the results from the microstructural characterization of electroless nickel-plated pearlitic matrix ductile irons. Electroless Ni-P coatings have been obtained and composite electroless Ni-P and Ni-P-WC particles have been generated. The coatings achieved have been characterized by means of optical microscopy, scanning electron microscopy, EDS chemical microanalysis, X-ray diffraction, Vickers microhardness and wear resistance testing. The obtained results allow to distinguish that homogeneous coatings in thickness and with a good distribution of particles were achieved in the case of the Ni-P-WC coatings than in the Ni-P-SiC coating. Likewise, the structural characterization allowed to determine that the Ni-P coatings have an amorphous nature, and that the ceramic particles incorporated in the coatings allowed to improve the hardness (of the order of 100%) of the coatings.

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“…En particular las superficies multicapa se utilizan para satisfacer diversos requisitos especiales en elementos de máquinas, por ejemplo, en donde se desea obtener un cambio en las propiedades magnéticas, altos niveles de conductividad eléctrica, resistencia a la corrosión, resistencia al desgaste y/o elevados valores de dureza. Una de las alternativas más usadas es el recubrimiento Níquel-Fosforo por el método Niquelado Químico (Electroless Nickel Plating) [1], que cuenta con propiedades como: uniformidad en el espesor depositado en la capa, elevados niveles de dureza, resistencia al desgaste y a la corrosión, entre otras. Sin embargo, la selección de recubrimientos para aplicaciones específicas es una tarea compleja, debido a muchos factores influyentes en la decisión., como lo son, el valor y la naturaleza de las cargas externas, condiciones ambientales y las relaciones entre las propiedades mecánicas del sistema sustratomulticapas.…”

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Determinación de la dureza de un recubrimiento doble capa de níquel-fosforo utilizando el método de elementos finitos

2022

Congreso Iberoamericano De Ingeniería Mecánica-Cibim 2022

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Los recubrimientos de níquel-fosforo depositados por el método de niquelado químico "ENP" son muy utilizados en diversas industrias, por sus características deseables como lo son: su alta dureza, sus propiedades magnéticas y excelente resistencia a la corrosión. La selección de los recubrimientos multicapas siempre ha representado un desafío debido a la naturaleza de los esfuerzos y deformaciones los cuales influyen en los diferentes sistemas de materiales estratificados. El objetivo del presente estudio es analizar las tensiones de contacto y deformaciones causadas por la indentación en un recubrimiento de dos capas Níquel-Fosforo sobre acero AISI 1045 en un régimen elástico-plástico, por medio de un modelado computacional usando el método de elementos finitos (MEF). Los resultados de la dureza del material obtenidos computacional y experimentalmente fueron comparados, observándose una diferencia entre ellos de un 8.5%. Estos resultados indican que el MEF es una buena técnica para continuar investigando, en futuros trabajos, en recubrimientos multicapas, aunque es necesario profundizar para reducir la diferencia obtenida.

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Electroless Nickel Phosphorous:una visión global

Cited by 4 publications

References 48 publications

Non-Precious Metals Catalysts for Hydrogen Generation

Non-Precious Metals Catalysts for Hydrogen Generation

Microstructural and Mechanical Characterization of Composite Electroless Ni-P-WC Coatings on Ductile Iron

Determinación de la dureza de un recubrimiento doble capa de níquel-fosforo utilizando el método de elementos finitos

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