Determination of the Optimal Deposition Conditions of Oxide-Zirconium Coating on Steelbase

Zhurinov, M. Zh.; Statsyuk, V. N.; Fogel, L. A.; Bold, A.; Abrashov, A. A.; Kostiuk, Andrey

doi:10.31788/rjc.2019.1235205

Cited by 2 publications

(4 citation statements)

References 8 publications

(8 reference statements)

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“…A solution of hexafluorozirconic acid in the presence of Co (II) and Ni (II) ions has been developed for improving the adhesion strength of zirconium oxide coatings on the surface of iron. 17 From the Fig. -5, it can be seen that the ZrO 2 powder contains two crystalline phases.…”

Section: Resultsmentioning

confidence: 98%

Electrophoretic Deposition of Zirconia on Alumina for Molten Salt Applications

Mideen¹,

Venkatasubramanian²,

Sridhar³

et al. 2020

RJC

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Electrophoretic deposition of zirconia on alumina crucibles was carried out at constant voltage conditions from zirconia suspension prepared with isopropyl alcohol. The phase purity and surface morphology of coated samples were characterized by X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscopy coupled with energy dispersive X-ray analysis. The maximum deposit yield was obtained with a direct current potential of 125 V. The substrates pretreated with acid-base and subjected for sintering temperature 1100°C for one hour showed excellent adhesion on both sides. The X-ray diffraction results showed the monoclinic phase is the major component and the average crystallite sizes of coated deposits were found as ~4.1μ. The absorption bands observed at 463 cm -1 , 743 cm -1 and at 486 cm -1 confirm the presence of ZrO 2 phases. The intensity of bands observed at 3415 cm -1 and 1634 cm -1 were gradually decreased due to sintering confirm the stretching and deformation of the O-H bond. The surface analysis showed that the zirconia particles are of uniform size and there is a considerable agglomeration of the particles on alumina substrates. The energy dispersive analysis indicated the presence of elemental Zr and O and sintering causes the penetration of agglomerated zirconia particles into the micropores present on alumina substrates and is responsible for excellent adhesion.

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Section: Resultsmentioning

confidence: 98%

Electrophoretic Deposition of Zirconia on Alumina for Molten Salt Applications

Mideen¹,

Venkatasubramanian²,

Sridhar³

et al. 2020

RJC

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“…It should be noted that zirconium-containing coatings have the smallest thickness and specific gravity in comparison with other coatings. It was revealed that paintwork varnish with a zirconiumcontaining adhesive sublayer had a higher adhesion strength to the base compared to crystalline and amorphous phosphate and chromate coatings [7,10].…”

Section: Discussionmentioning

confidence: 99%

“…In the process of deposition of anti-corrosion coatings, it is necessary to further reduce the environmental hazard that these processes involve, as well as the concentration of the solutions used and the temperature and time for deposition of protective coatings. Recently, ceramic coatings have been gaining in popularity since they have high thermal and electrical resistance and are also more resistant to oxidation, corrosion [1][2][3][4][5][6][7][8], erosion, and wear in high-temperature environments. Diamond nanoparticles, as well as those of other chemical compounds used for the deposition of hard coatings (SiC, ZrO 2 , and Al 2 O 3 ), are commercially available, with a particle size in the range of 4-300 nm.…”

Section: Introductionmentioning

confidence: 99%

“…Since corrosion processes can be represented through a course of cathodic and anodic processes on a metal surface, the cyclic voltammetry method was used to study the corrosion resistance of the formed anticorrosive coatings. The method of cyclic voltammetry makes it possible to obtain independent information on the processes occurring on steel samples during the deposition of oxide-zirconium coatings, and at the same time to assess the degree of their corrosion resistance [7,16]. The corrosion resistance of the formed oxide-zirconium coatings was determined by the ionization current of the iron electrode at a certain potential.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Molybdenum and Tungsten on the Formation of Zirconium Oxide Coatings on a Steel Base

Bold

Sassykova

Fogel³

et al. 2021

Coatings

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In this paper, we have developed conditions for the deposition of zirconium oxide coatings from solutions containing hexafluorozirconic acid as well as tungsten and molybdenum salts on a steel base. Based on electrochemical studies, it was shown that the addition of tungsten and molybdenum salts to the solution to deposit zirconium oxide coatings led to the inhibition of the anodic process of iron ionization. It was shown that the optimal conditions for the deposition of oxide-zirconium coatings on the surface of steel samples from a solution of 0.2 g/L Zr (IV) + 0.15 g/L W (VI) + 0.1 g/L Mo (VI) were a deposition temperature of 30 °C and time of 10 min. The thickness of the oxide-zirconium coatings formed under these conditions was 64.72 nm, the adhesion value was 3.17 MPa/s, and the corrosion resistance was 26 s according to Akimov’s drop method. The depth of corrosive penetration, determined in the salt fog chamber, did not exceed 2 mm after 240 h of testing, meeting the requirements for adhesive layers under the paintwork.

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Determination of the Optimal Deposition Conditions of Oxide-Zirconium Coating on Steelbase

Cited by 2 publications

References 8 publications

Electrophoretic Deposition of Zirconia on Alumina for Molten Salt Applications

Electrophoretic Deposition of Zirconia on Alumina for Molten Salt Applications

Influence of Molybdenum and Tungsten on the Formation of Zirconium Oxide Coatings on a Steel Base

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