Electric arc deposition of carbon steel coatings with improved mechanical properties

Zurecki, Zbigniew; Garg, D.; Bowe, D. J.

doi:10.1007/s11666-997-0023-7

Cited by 5 publications

(3 citation statements)

References 2 publications

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“…Shrouding of flame or arc is one of the viable solutions for the protection of coating oxidation. There are limited data available where an attempt has been made to reduce oxidation level in thermal spraying by using nitrogen as a shrouding gas or supplying nitrogen as an atomizing gas [26-28]. The reduction of oxidation level in HVOF-sprayed pure iron coating was achieved up to 50%, as reported by Hackett and Settles [27].…”

Section: Introductionmentioning

confidence: 99%

Oxidation control in arc-sprayed SS420 coating

Tailor¹,

Vashishtha²,

Modi³

et al. 2020

Surface Engineering

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In coating, especially in the arc spraying process, oxidation leads to the deterioration of wear and corrosion-resistant properties. In the present work, an effective shrouding arrangement is designed and introduced to arc spray gun to reduce oxidation content in the coating. The effect of shrouding on microstructural and coating properties is analysed by the characterization techniques, such as SEM, EDS, XRD and Vickers microhardness testing. Adhesion strength and fracture toughness were also measured. Results showed that almost 70% oxidation reduction is found in as-sprayed coating. It is concluded that the shrouding attachment increases inter-splat cohesion, adhesion strength and also produces coatings with optimum oxide content and porosity. Furthermore, On the contrary, corrosion resistance of air-atomized coatings was found better than nitrogen-atomized coatings owing to oxide phase formation.

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Section: Introductionmentioning

confidence: 99%

Oxidation control in arc-sprayed SS420 coating

Tailor¹,

Vashishtha²,

Modi³

et al. 2020

Surface Engineering

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“…been made to reduce the amount of oxygen the spray encounters, e.g. by using nitrogen atomising gas [3] and shrouding of the spray [4,5].…”

Section: Introductionmentioning

confidence: 99%

Oxidation during electric arc spray forming of steel

Newbery

Grant

2006

Journal of Materials Processing Technology

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“…The generation of spray particles, i.e., the droplet formation, is determined by the aerodynamically driven disintegration of the molten electrode tips as well as the magnetofluid-dynamic processes and thus depends on the flow characteristics of the atomization gas, the thermodynamic properties and transport quantities (for partially ionized plasma in the area of arc discharge), as well as the physical properties of the electrodes (e.g., material-specific properties of the melt) [24][25][26][27][28]. Numerous studies have already dealt with the use of different atomizing gas types for the production of arc-sprayed coatings [22,[29][30][31]. For different feedstocks, it was validated that the use of compressed air led to an increased oxide content in the deposits.…”

Section: Introductionmentioning

confidence: 99%

Machine Hammer Peening and Its Effect on the Surface Integrity of Arc-Sprayed WC-W2C-FeCMnSi Coatings

Hagen,

Baumann,

Heidelmann

et al. 2023

Coatings

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With respect to post-processing techniques in the field of surface engineering, it was recently found that machine hammer peening (MHP) represents a promising approach to functionalizing thermally sprayed coatings as the MHP contributes to a compression of the coating, enabling the potential to reduce the coating porosity as well as the protruding peaks of the rough as-sprayed coating surface. The MHP also has the potential to induce compressive residual stresses in the coating surface, which can positively affect the mechanical and tribological properties. Arc-sprayed tungsten carbide-reinforced Fe-based coatings pose an appropriate candidate to counteract the wear of tribologically stressed surfaces. Due to the inherent process characteristics, however, these coatings are mostly characterized by a heterogeneous lamellar microstructure with residual porosity and interstratified with a certain amount of oxides, as well as the presence of tensile residual stresses. To adjust their microstructural and mechanical coating properties, the applicability of a subsequent MHP was evaluated in this study. Therefore, arc-sprayed WC-W2C reinforced FeCMnSi coatings are deposited using either argon or compressed air as atomization and shroud gas, providing different lamellar structures and oxide content. The effect of MHP on the surface integrity of the WC-W2C-FeCMnSi coating is investigated with respect to its porosity, lamellar structure, hardness, and residual stresses, which are known as relevant influencing factors on the performance of tribologically stressed components. It was found that the MHP leads to reduced porosity and lamella thickness as well as increased hardness due to strain hardening effects. Furthermore, it was demonstrated that the MHP leads to the introduction of compressive residual stresses, which contribute to a decline in tensile residual stresses in the near-surface area.

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Electric arc deposition of carbon steel coatings with improved mechanical properties

Cited by 5 publications

References 2 publications

Oxidation control in arc-sprayed SS420 coating

Oxidation control in arc-sprayed SS420 coating

Oxidation during electric arc spray forming of steel

Machine Hammer Peening and Its Effect on the Surface Integrity of Arc-Sprayed WC-W2C-FeCMnSi Coatings

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