Effect of MoO2 and TiO2 on electrodeposition and properties of chromium coating

Surviliene, S.; Orlovskaja, L.; Bikulčius, G.; Białłozór, S.

doi:10.1016/s0257-8972(00)01065-3

Cited by 27 publications

(11 citation statements)

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“…Al 2 O 3 /SiC particles enhanced corrosion resistance in Cr-Al 2 O 3 /SiC composite coating (Gao, et al, 2011). MoO 2 /TiO 2 particles had an effect on internal stress and high-temperature resistance in Cr-MoO 2 /TiO 2 composite coating (Surviliene, et al, 2001). Cr-ZrO 2 composite coating is one of the prospective candidates for this purpose.…”

Section: Introductionmentioning

confidence: 97%

The effect of ZrO2 addition on the polarization behavior of Cr-ZrO2 composite coating

Hashimoto

Sugio

Sasaki

et al. 2016

Mechanical Engineering Journal

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Hard chromium coating is mainly used to improve the surface performance of pistons, brake disks and gears. In the future, better abrasion resistance and better corrosion resistance of hard Cr coating are demanded. Co-deposition of ceramic particles in Cr coating improved these characteristics. The Cr-ZrO 2 composite coating is one of the prospective candidates for improvements of mechanical properties. In the present work, the measurement of polarization behavior of low carbon steel in CrO 3 -H 2 SO 4 electrolyte with ZrO 2 addition was conducted to investigate corrosion resistance. Microstructure of coating surface was observed with Electron Prove Micro Analyzer (EPMA) and Transmission Electron Microscope (TEM). Vickers hardness of coating surface was measured. The addition of ZrO 2 had no effect on pH. Electrolyte was still strong acid. The shape of polarization curve was changed by the addition of ZrO 2 particles. Polarization point was shifted higher by the addition of ZrO 2 particles. The corrosion resistance was improved by the addition of ZrO 2 particles. ZrO 2 particles made the reduction reaction slowly. Coating surface consisted of Cr nano-crystal whose average size was 32.7 nm. Aggregation of ZrO 2 particles was not observed in the resolution of EPMA. Addition of ZrO 2 particles improved Vickers hardness of coating surface.

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Section: Introductionmentioning

confidence: 97%

The effect of ZrO2 addition on the polarization behavior of Cr-ZrO2 composite coating

Hashimoto

Sugio

Sasaki

et al. 2016

Mechanical Engineering Journal

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“…Particle-reinforced metal matrix composites commonly exhibit wide engineering applications due to their improved hardness and higher wear and corrosion resistance when compared to pure metal or alloy (Vaezi et al, 2008;Ataee-Esfahani et al, 2009;Salehi Doolabi et al, 2012). In recent years, successful co-deposition of ultra-fine particles such as metallic powders, hard oxides (aluminum oxide [Al 2 O 3 ], SiO 2 and TiO 2 ), carbides [tungsten carbide (WC) and silicon carbide (SiC)], multiwall carbon nanotube, diamond and polymers with a metal or alloy matrix has been reported, and their corresponding structures and properties have been investigated by many researchers (Gyftou et al, 2008;Survilienë et al, 2001;Arami et al, 2007;Narayan and Chattopadhyay, 1982). According to the previously published data, dispersion of second-phase particles into the amorphous materials has resulted in reduction of layer brittleness.…”

Section: Introductionmentioning

confidence: 99%

Electroplating and characterization of Cr–Al₂O₃ nanocomposite film from a trivalent chromium bath

Doolabi

Sadrnezhaad

Doolabi

2014

Anti-Corrosion Methods and Materials

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Purpose – The main aim of this study was to improve current efficiency and to obtain thicker coatings via aluminum oxide (Al2O3) addition to the chromium (Cr) (III) bath. Design/methodology/approach – Pure Cr and nanocomposite Cr–Al2O3 coatings were electrodeposited from Cr (III) bath onto cathode copper substrates by conventional method. Dependence of current efficiency to current density, Al2O3 content and particle size were investigated. Findings – Current efficiency increased with Al2O3 amount and decreased with Al2O3 particle size. Maximum current efficiency was achieved at 25 A/dm2 for pure Cr and 30 A/dm2 for composite coatings. Al2O3 bath content, current density and stirring rate increased the coating Al2O3 weight per cent significantly. Addition of Al3+ bath composition inhibited nanoparticle agglomeration, increasing film homogeneity. Cr–Al2O3 nanocomposites showed higher microhardness and better corrosion resistance than pure Cr layer. Originality/value – Cr (III) is not as toxic and as carcinogenic as Cr (VI) which is widely used for Cr electroplating these days. Low current efficiency and poor product quality are, however, major drawbacks of the former. This paper describes significant improvements obtainable by addition of Al2O3 nanoparticles to the Cr (III) bath for increasing the microhardness, the corrosion resistance and the current efficiency of the deposition.

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“…3 At present, much more composite coatings based on Cr have been investigated from hexavalent chromium (Cr(VI)) baths because the thickness of the composite coatings * Author to whom correspondence should be addressed. could be easily increased due to a high deposition rate of the matrix metal, and the Cr matrix composite coatings have been used in the fields of automotive industry and mechanical equipment.…”

Section: Introductionmentioning

confidence: 99%

“…[6][7][8] But compared with Cr(VI) baths, the depositing technique from Cr(III) baths has two defects. First, it was difficult to obtain a thick Cr coating from Cr(III) aqueous solutions because Cr(III) is hard to escape from aqua-chromium complexes (Cr(OH) 3 and hydroxyl bridge of single polymerization) and hard to form Cr(s) on the cathode surface through a reduction reaction. 9 For example, Baosong Li and co-workers 10 reported that the thickness of the Cr-P coatings, which was prepared from the Cr(III) baths, was not over 5 m 11 Second, the content of nanoparticles into the composite coatings was too low due to a low deposition rate of the matrix metal ions (Cr(III)) and an occurrence of hydrogen evolution reaction on the cathode plane.…”

Section: Introductionmentioning

confidence: 99%

Electrodepositing Behaviors and Properties of Nano Fe–Ni–Cr/SiC Composite Coatings from Trivalent Chromium Baths Containing Compound Carboxylate-Urea System

He¹,

Hou²,

Cai³

et al. 2013

j nanosci nanotechnol

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The nano Fe-Ni-Cr/SiC composite coatings were prepared using pulse electrodeposition method from trivalent chromium baths containing compound carboxylate-urea system and nano SiC in ultrasonic field. The effects of the carboxylate-urea system on the nano Fe-Ni-Cr/SiC composite coatings have been investigated. These results indicated that the SiC and Cr contents and the thickness of the Fe-Ni-Cr/SiC composite coatings could be obviously improved by the compound carboxylate-urea system. The steady-state polarization curves showed that the hydrogen evolution reaction (HER) could be significantly inhibited by the compound carboxylate-urea system, which was benefit to increase the SiC and Cr contents and the thickness of the composite coatings. The cyclic voltammetry (CV) curves showed that the cathodic polarization of the matrix metal ions could be increased in the bath containing the compound carboxylate-urea system. Thus, a compact Fe-Ni-Cr/SiC composite coating could be obtained using this technique. The surface morphology of the Fe-Ni-Cr/SiC composite coatings checked with the scanning electron micrographs (SEM) showed that the surface smoothness could be also improved and the microcracks and pinholes could be decreased due to the presence of the compound carboxylate-urea system. The phase composition of the as-posited coating was measured by the X-ray diffraction (XRD). XRD data showed that the as-posited coating was Fe-Ni-Cr/SiC composite coating. The chemical composition of the coating was investigated by energy dispersive spectrum (EDS) analysis. The result showed the functional Fe-Ni-Cr/SiC composite coatings with 4.1 wt.% SiC and 25.1 wt.% Cr, and 23.9 microm thickness were obtained in this study, which had best corrosion resistance according to the results of the typical potentiodynamic polarization curves of the Fe-Ni-Cr/SiC composite coatings.

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Effect of MoO2 and TiO2 on electrodeposition and properties of chromium coating

Cited by 27 publications

References 1 publication

The effect of ZrO<sub>2</sub> addition on the polarization behavior of Cr-ZrO<sub>2</sub> composite coating

The effect of ZrO<sub>2</sub> addition on the polarization behavior of Cr-ZrO<sub>2</sub> composite coating

Electroplating and characterization of Cr–Al₂O₃ nanocomposite film from a trivalent chromium bath

Electrodepositing Behaviors and Properties of Nano Fe–Ni–Cr/SiC Composite Coatings from Trivalent Chromium Baths Containing Compound Carboxylate-Urea System

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Effect of MoO2 and TiO2 on electrodeposition and properties of chromium coating

Cited by 27 publications

References 1 publication

The effect of ZrO<sub>2</sub> addition on the polarization behavior of Cr-ZrO<sub>2</sub> composite coating

The effect of ZrO<sub>2</sub> addition on the polarization behavior of Cr-ZrO<sub>2</sub> composite coating

Electroplating and characterization of Cr–Al2O3 nanocomposite film from a trivalent chromium bath

Electrodepositing Behaviors and Properties of Nano Fe–Ni–Cr/SiC Composite Coatings from Trivalent Chromium Baths Containing Compound Carboxylate-Urea System

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Electroplating and characterization of Cr–Al₂O₃ nanocomposite film from a trivalent chromium bath