Resistance to Corrosion of Zirconia Coatings Deposited by Spray Pyrolysis in Nitrided Steel

Cubillos, G.I.; Olaya, Jhon J; Bethencourt, M.; Cifredo, G.A.; Blanco, Ginesa

doi:10.1007/s11666-013-9956-1

Cited by 15 publications

(11 citation statements)

References 36 publications

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“…The corrosion resistance of the coatings was evaluated in an ammonia atmosphere. The zirconia coating was found to improve the resistance to corrosion [6]. Highly corrosion and wear resistant chromium carbide (Cr3C2)based cermet coatings have been thermally sprayed onto traditional fluidized bed combustors (FBC) operating with ecological waste and biomass fuels [7].…”

Section: Introductionmentioning

confidence: 99%

HVOF Sprayed Mullite Coatings for Use In Extreme Environments

Bellie¹,

Suresh²,

Ragunath³

2020

JTSE

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Products used in industry and marine applications are exposed to extreme environments like high heat, humidity, acidic or alkaline or hyper saline environment, UV and IR radiation. Metals with good corrosion and oxidation resistance may be used but are restricted to Ni and Cr alloys, titanium and super alloys etc., which are costly and have their limitations. Hence ceramic coatings on low cost metals may be an answer to this problem. Ceramics are inherently chemically inert, high temperature resistant, corrosion and oxidation resistant. Flame spraying of ceramics is a good and reliable method for applying ceramic coatings on metallic substrates with good bond strength (> 80 MPa) and 1% porosity. In this work, HVOF technique is applied to obtain 100 microns thick mullite coatings on MS substrates with a NiCr bond coat. Mullite has a high oxidation and corrosion resistance. It is chemically inert. It has high temperature resistance even at 2000 C. These properties are ideal for industrial components exposed to salty environments. Characterization studies like XRD, SEM/EDS, Corrosion tests using polarization technique, coating thickness and surface roughness have been studied and reported. A corrosion rate of 1.55 mm/ year has been achieved in a sea water environment.

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Section: Introductionmentioning

confidence: 99%

HVOF Sprayed Mullite Coatings for Use In Extreme Environments

Bellie¹,

Suresh²,

Ragunath³

2020

JTSE

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“…[ 44 ] The 6‐Zr x N y layer exhibits an additional peak at 55.4° attributed to m ‐ZrO 2 (122). [ 49 ] Moreover, the signal intensity increased with the nitrogen flow rate, suggesting the development of crystallinity of the zirconium nitrides.…”

Section: Resultsmentioning

confidence: 99%

“…For the oxynitride samples, the signals were observed at 2 θ angles of ≈29.0°, 48.8°, 55.1°, and 56.1°. The peak at 2 θ = 29.0° may be assigned as Zr x N y O z (222) [ 50 ] or m ‐ZrO 2 (111), [ 49 ] while the signal at 48.8° corresponds to Zr x N y O z (440) [ 51 ] (see Figure 2B). The results show that inside the Zr x N y O z samples, there is no ZrN bonding.…”

Section: Resultsmentioning

confidence: 99%

Highly Oriented Zirconium Nitride and Oxynitride Coatings Deposited via High‐Power Impulse Magnetron Sputtering: Crystal‐Facet‐Driven Corrosion Behavior in Domestic Wastewater

et al. 2021

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Herein, highly crystalline ZrxNy and ZrxNyOz coatings are achieved by the deposition via high‐power impulse magnetron sputtering. Various N2 and N2/O2 gas mixtures with argon are investigated. The chemical composition and, as a result, mechanical properties of the deposited layer can be tailored along with morphological and crystallographic structural changes. The corrosion resistance behavior is studied by potentiodynamic measurements and electrochemical impedance spectroscopy in a sample of synthetic wastewater designed to imitate real‐life domestic wastewater. The corrosion current density of the ZrxNyOz coating is in the range of 33–70 μA cm−2, whereas for the zirconium nitride layers, values below 1.0 μA cm−2 are achieved. The highest corrosion resistance of 64 nm year−1 is observed for the ZrxNy coating deposited with 1.00% N2 content in the gas mixture with a corrosion potential of −0.41 V Ag/AgCl.

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“…Las temperaturas consideradas fueron 550 y 600 °C y los tiempos fueron 5 y 10 min. Se utilizó una velocidad de calentamiento de 5 °C/min y de enfriamiento de 10 ºC/min [15]. A continuación, se determinó el espesor de los recubrimientos utilizando un perfilómetro Bruker, DektakXT.…”

Section: Síntesis Y Caracterización De Las Películas De Zro2 Estabilizado Con Calcia Aplicadas Sobre Sustratos Metálicosunclassified

“…Los sustratos metálicos más empleados en estudios de corrosión incluyen aceros al carbono e inoxidables y las aleaciones de aluminio. Las técnicas para recubrir estos sustratos pueden ser por aspersión y electrodeposición [8]. Sin embargo, las técnicas más usadas en este caso son dip-coating y spin-coating, ya que son técnicas que no requieren de equipos sofisticados, hacen posible la reproducibilidad de los resultados experimentales alcanzados y son suficientemente versátiles para realizar recubrimientos a nivel industrial [2][3][4][5][6].…”

Section: Introductionunclassified

CaO stabilized ZrO2 coating intended to reduce corrosion on steel and aluminum substrates

Villarreal

Aldás

Guerrero-Barragán

et al. 2017

Superficies y Vacio

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In this work, we studied the anticorrosive properties of sol-gel nanostructured calcium stabilized zirconia coatings, deposited onto 304 stainless steel and commercial aluminum substrates by dip-coating and spin-coating. During the ceramic oxide synthesis, zirconium oxychloride octahydrate was used as precursor and calcium acetate monohydrate was used as stabilizer of the cubic zirconia structure, in a precursor/stabilizer molar ratio of 0.84/0.16. The gel films deposited on steel and aluminum were heat treated at 550 y 600 °C during 5 and 10 min, respectively, and the adherence of the resulting ceramic films was evaluated. Continuous coatings were obtained that reached average thicknesses between 2 y 3 mm when deposited on stainless steel, and between 1.5 y 1.6 on aluminum, depending on the coating method. The corrosion resistance of the best-adhered coatings was evaluated during 500 h in a saline chamber, according to ASTM B117-11. All the substrate-coating combinations showed a very good corrosion resistance. For the two substrate types, the films deposited by dip-coating showed higher corrosion resistance than the ones deposited by spin-coating. The anticorrosive protective effect of the coatings was better for the aluminum substrates, compared to the stainless-steel substrates.

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Resistance to Corrosion of Zirconia Coatings Deposited by Spray Pyrolysis in Nitrided Steel

Cited by 15 publications

References 36 publications

HVOF Sprayed Mullite Coatings for Use In Extreme Environments

HVOF Sprayed Mullite Coatings for Use In Extreme Environments

Highly Oriented Zirconium Nitride and Oxynitride Coatings Deposited via High‐Power Impulse Magnetron Sputtering: Crystal‐Facet‐Driven Corrosion Behavior in Domestic Wastewater

CaO stabilized ZrO2 coating intended to reduce corrosion on steel and aluminum substrates

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