The corrosion behavior of hard W–C system chemical vapor deposition layers in HCl and H2S aqueous solutions

Dushik, V. V.; Lakhotkin, Yu. V.; Kuz'min, V.P.; Rozhanskii, N. V.

doi:10.1134/s2070205116070042

Cited by 7 publications

(3 citation statements)

References 2 publications

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“…The morphology of the Ni-Cr-Mo film did not significantly change before and after the corrosion experiment, showing a stable anti-corrosion performance. The hard W-C system deposit prepared by Dushik et al [7] through chemical vapor deposition technology is also considered a promising anti-corrosion film because of its extremely low porosity of 0.02% and outstanding corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Tribological Properties and Corrosion Resistance of Multilayer Si-DLC Films on the Inner Surfaces of N80 Steel Pipes

Wang,

Zhang,

et al. 2024

Coatings

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In order to solve the problem of the corrosion and wear of N80 metal pipelines exposed to corrosive media and abrasive sand during the development of petroleum resources, the proposed solution involves utilizing HC-PECVD technology to deposit a series of multilayer Si-DLC films with varying thicknesses on the inner surfaces of the N80 steel pipes. This investigation systematically explored the microstructure, mechanical properties, tribological features, and corrosion resistance of the multilayer Si-DLC films. Remarkably, after coating the multilayer (Si-DLC)40 film on the inner wall of the N80 tube, the friction coefficient decreased from 0.7~0.75 to 0.2~3, and the wear rate decreased by two orders of magnitude. In addition, the corrosion current decreased by 50%, and the impedance doubled in a 3.5 wt% NaCl solution saturated with CO2. Thus, the multilayer (Si-DLC)40 film on the inner wall of the N80 tube exhibited superior tribological properties and exceptional corrosion resistance. These findings are anticipated to furnish valuable data and technical insights for mitigating corrosion in N80 steel pipes during petroleum exploitation.

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Section: Introductionmentioning

confidence: 99%

Investigation of the Tribological Properties and Corrosion Resistance of Multilayer Si-DLC Films on the Inner Surfaces of N80 Steel Pipes

Wang,

Zhang,

et al. 2024

Coatings

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“…Tungsten and tungsten-based coatings are very promising wear-resistant and anticorrosive materials that can be used to protect important components of aerospace, chemical, oil and gas, and other industries [1][2][3][4]. Upon contact with an aggressive medium (pH 0-5), a protective film of WO 3 or W 2 O 5 oxides is formed on the metal, which improves its corrosion resistance in such environments [1,3]. However, in neutral and alkaline solutions and humid environments (pH > 6), the corrosion resistance of tungsten decreases, especially in oxidizing or aerated media.…”

Section: Introductionmentioning

confidence: 99%

Methods of Formation of Protective Inhibited Polymer Films on Tungsten

Shapagina,

Shapagin,

Dushik

et al. 2023

IJMS

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A comparative study of anticorrosive inhibited polymer films on the tungsten surface formed from an aqueous solution of inhibited formulations (INFOR) containing organosilane and corrosion inhibitors was carried out by means of the prolonged exposure of a tungsten product in a modifying solution and by the method of cataphoretic deposition (CPD). Depending on the method of forming films on tungsten, the molecular organization of the near-surface layers was studied (ATR-FTIR), and the subprimary structure of the films was explored (TEM). The optimal modes of cataphoresis deposition (CPD duration and current density applied to the sample) for the formation of a protective inhibited polymer film on the tungsten surface were established by means of SEM. The energy and thermochemical characteristics (sessile drop and DSC methods), as well as operational (adhesive behavior) and protective filming ability (EIS and corrosion behavior), according to the method of formation of inhibited polymer film, were determined. Based on the combined characteristics of the films obtained by the two methods and the deposition modes, the CPD method showed better performance than the electroless dipping method.

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“…One of the examples of work with refractory materials by the SLM method is the obtaining of WC-Co bulk alloys [8,9]. WCCo alloys are widely used in industry as cutting tools [10,11] including tools with multilayer coatings [12,13], and also can be used as wear-resistant bulk materials [14], wearresistant [15] and anticorrosion coatings [16].…”

Section: Introductionmentioning

confidence: 99%

Phase composition and microstructure of WC–Co alloys obtained by selective laser melting

Khmyrov

Shevchukov

Gusarov

et al. 2017

Mechanics & Industry

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Abstract. Phase composition and microstructure of initial WC, BK8 (powder alloy 92 wt.% WC-8 wt.% Co), Co powders, ball-milled powders with four different compositions (1) 25 wt.% WC-75 wt.% Co, (2) 30 wt.% BK8-70 wt.% Co, (3) 50 wt.% WC-50 wt.% Co, (4) 94 wt.% WC-6 wt.% Co, and bulk alloys obtained by selective laser melting (SLM) from as-milled powders in as-melted state and after heat treatment were investigated by scanning electron microscopy and X-ray diffraction analysis. Initial and ball-milled powders consist of WC, hexagonal a-Co and face-centered cubic b-Co. The SLM leads to the formation of major new phases W 3 Co 3 C, W 4 Co 2 C and face-centered cubic b-Co-based solid solution. During the heat treatment, there occurs partial decomposition of the face-centered cubic b-Co-based solid solution with the formation of W 2 C and hexagonal a-Co solid solution. The microstructure of obtained bulk samples, in general, corresponds to the observed phase composition.

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The corrosion behavior of hard W–C system chemical vapor deposition layers in HCl and H2S aqueous solutions

Cited by 7 publications

References 2 publications

Investigation of the Tribological Properties and Corrosion Resistance of Multilayer Si-DLC Films on the Inner Surfaces of N80 Steel Pipes

Investigation of the Tribological Properties and Corrosion Resistance of Multilayer Si-DLC Films on the Inner Surfaces of N80 Steel Pipes

Methods of Formation of Protective Inhibited Polymer Films on Tungsten

Phase composition and microstructure of WC–Co alloys obtained by selective laser melting

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