Characterization and anticorrosion studies of spray coated nickel oxide (NiO) thin films

Shajudheen, Vp. Muhamed; Kumar, V. Senthil; Maheswari, A. Uma; Sivakumar, M.; Kumar, Senthil; Rani, K. Anitha

doi:10.1016/j.matpr.2017.11.555

Cited by 7 publications

(3 citation statements)

References 27 publications

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“…Los picos de difracción identificados aparecen en el ángulo 2ϴ aproximadamente en 19.6°, 20°, 26.3°, 30°, 32.5°, 35.3°, 38.9°, 42.3° and 52.3° que corresponden a los planos (200), ( 201), ( 221), (113), (041), (312), (241), ( 242), (205) los cuales son asociados a la fase ortorrómbica de Ni9S8 (JCPDS card No. 22-1193) [ 14 ]. En ambos difractogramas se puede apreciar la presencia de las mismas señales, sin embargo, la orientación preferencial si está determinada por el efecto de la concentración de agente complejante hacía el plano (201) y (113) para la muestra con alta (ligeramente mayor) y baja concentración respectivamente.…”

Section: Resultados Y Discusiónunclassified

Síntesis y Caracterización de Nanopartículas de NiS Mediante Procedimiento de Química Suave

Carrillo Castillo,

Mota González,

Guzmán Saucedo

et al. 2021

Lat. Ame. Jour. App. Eng.

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En la presente investigación se reporta la síntesis y caracterización de nanopartículas (Nps) semiconductoras de sulfuro de níquel (NiS) en solución con características semiconductoras, el efecto de utilizar glicina como agente complejante a diferente concentración fue estudiado. Las nanopartículas sintetizadas en solución fueron envejecidas 24 horas antes de su caracterización. De esta manera fue posible definir su composición, propiedades ópticas, distribución y morfología. Las nanopartículas de NiS presentaron forma esférica con tamaño aproximado de 80 nm, esto mediante microscopía electrónica de barrido (MEB). La estructura cristalina determinada fue ortorrómbica. Las nanopartículas en solución fueron caracterizadas eléctricamente con mediciones de conductancia, obteniendo valores de entre 431 y 765 uS, donde conforme la concentración de glicina incrementa la conductancia disminuye. La energía de banda prohibida calculada de las nanopartículas fue entre 2.7-2.9 eV, el cual, es menor a baja concentración del agente complejante. Las nanopartículas obtenidas en esta investigación mediante el procedimiento propuesto ofrecen una alternativa de desarrollar materiales activos por procedimientos de bajo costo para su aplicación en dispositivos semiconductores.

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Section: Resultados Y Discusiónunclassified

Síntesis y Caracterización de Nanopartículas de NiS Mediante Procedimiento de Química Suave

Carrillo Castillo,

Mota González,

Guzmán Saucedo

et al. 2021

Lat. Ame. Jour. App. Eng.

View full text Add to dashboard Cite

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“…Furthermore, it also increases the nucleation rate of pitting corrosion. While NiO is very stable and shows fully insulative property, and the electron cannot pass through it 45,62 . Usually the component of NiOOH is also chemically and thermally stability 63,64 and can protect Ni from corrosion according to the literatures, which can prohibit the anion (Cl − ) to pass through the oxidation film and corrode the substrate.…”

Section: Characterization Of Oxide Filmsmentioning

confidence: 99%

Influence of UV light irradiation on the corrosion behavior of electrodeposited Ni and Cu nanocrystalline foils

Deng

2020

Sci Rep

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Influence of ultraviolet (UV) light irradiation on the corrosion behavior of electrodeposited Ni and Cu nanocrystalline foils in 3.5% NaCl solution was studied by means of electrochemical methods, electron work function (EWF) analysis, and characterization with atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). It was demonstrated that the influence of solar light on corrosion of the metals was non-negligible, which could be very different for different materials. The UV light irradiation resulted in an increase in corrosion resistance of the Cu foil but showed an opposite influence on that of the Ni foil. Based on surface state analysis, it was concluded that the UV irradiation altered the surface oxide films. The UV light induced the formation of Cu2O on Cu, which is more stable and compacted than naturally formed CuO film. However, the UV light accelerated the formation of Ni2O3, which is loose, porous and brittle, compared to naturally formed NiO on Ni. The changes in oxide films were responsible for the opposite variations in the corrosion behavior of the Cu and Ni nanocrystalline foils caused by the UV light irradiation.

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“…The FESEM, AFM, UV Visible absorption, EIS analysis, Tafel analysis, and Open Circuit Potential (OCP) analyses exhibited strong mechanical adherence without cracks, which mostly confirmed the coating's toughness. They showed also that NiO films protect the stainless steel SS 304L from corrosion better than the substrate without coating [19]. Ekbal et al in 2021, prepared composite coating of HAP/ TiO2 by MAO (micro arc oxidation), on the biomedical Ni-Ti alloy produced by powder metallurgy.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Bio-Composite Coatings on Titanium Substrate by Electrostatic Spray Deposition

Bashar

Al-Kaisy

Al-Shroofy

2022

KEM

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In this research, the most modern deposition technique used will be utilized for biomedical applications is Electrostatic Spray Deposition (ESD), which focused on enhancing the corrosion resistance as well as biocompatibility of commercially pure titanium substrate by constructing bio composite coating, various percentages (2, 6, and 10) wt.% of Hydroxyapatite (HAP) powder were combined with (98, 94, and 90) wt.% of polymethyl methacrylate (PMMA) powder, and the same percentages (2, 6, and 10) wt.% of Nickel Oxide (NiO) powder also combined with (98, 94, and 90) wt.% of PMMA. The effects of HAP and NiO percentages in the PMMA matrix on the surface characteristics of titanium were analyzed. The FESEM, XRD, contact angle, and anti-bacterial test demonstrated that the coating layer was successfully made consistent throughout and devoid of cracks. the samples exhibited favorable wetting qualities and inhibited bacterial growth.

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Characterization and anticorrosion studies of spray coated nickel oxide (NiO) thin films

Cited by 7 publications

References 27 publications

Síntesis y Caracterización de Nanopartículas de NiS Mediante Procedimiento de Química Suave

Síntesis y Caracterización de Nanopartículas de NiS Mediante Procedimiento de Química Suave

Influence of UV light irradiation on the corrosion behavior of electrodeposited Ni and Cu nanocrystalline foils

Preparation of Bio-Composite Coatings on Titanium Substrate by Electrostatic Spray Deposition

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