Properties and Structure of Deposited Nanocrystalline Coatings in Relation to Selected Construction Materials Resistant to Abrasive Wear

Górka, Jacek; Czupryński, Artur; Żuk, Marcin; Adamiak, M.; Kopyść, Adam

doi:10.3390/ma11071184

Cited by 24 publications

(19 citation statements)

References 30 publications

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“…One of the method, which is used in the air to improvement the properties of metals is using protective coatings [38][39][40]. As a coating the hydrophobic substrates can be used to repel water.…”

Section: Introductionmentioning

confidence: 99%

Effect of Electrode Waterproof Coating on Quality of Underwater Wet Welded Joints

Tomków

Fydrych

Wilk³

2020

Materials

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In this paper, the effects of different hydrophobic coatings on the surface of covered electrodes on the quality of wet welded carbon steel joints were discussed. Commonly available hydrophobic substances used in industrial applications were selected for the research. The aim of using waterproof coatings was to check the possibility to decreasing the susceptibility of high-strength low-alloy S460N steel to cold cracking. During experiments diffusible hydrogen content in deposited metal determination by mercury method, metallographic macro- and microscopic testing and hardness measurements were performed. Investigations showed that waterproof coatings laid on covered electrodes can improve the quality of wet welded joints, by decreasing the Vickers HV10 hardness in heat-affected zone and decreasing the diffusible hydrogen content in deposited metal, which minimalize possibility of cold cracking.

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Section: Introductionmentioning

confidence: 99%

Effect of Electrode Waterproof Coating on Quality of Underwater Wet Welded Joints

Tomków

Fydrych

Wilk³

2020

Materials

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“…The arc thermal spraying is also used to deposit the metals and its alloys [14,15]. The metals can be applied by laser cladding [16], arc welding [17] and friction surfacing [18]. Information on thermal spraying directly in water is very limited.…”

Section: Introductionmentioning

confidence: 99%

The Abrasive Wear Resistance of Coatings Manufactured on High-Strength Low-Alloy (HSLA) Offshore Steel in Wet Welding Conditions

2020

Self Cite

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Some marine and offshore structure elements exploited in the water cannot be brought to the surface of the water as this will generate high costs, and for this reason, they require in-situ repairs. One of the repair techniques used in underwater pad welding conditions is a wet welding method. This paper presents an investigation of the abrasive wear resistance of coatings made in wet welding conditions with the use of two grades of covered electrodes—an electrode for underwater welding and a commercial general use electrode. Both electrodes were also used for manufacturing coatings in the air, which has been also tested. The Vickers HV10 hardness measurements are performed to demonstrate the correlation in abrasive wear resistance and the hardness of each specimen. The microscopic testing was performed. For both filler materials, the coatings prepared in a water environment are characterized by higher resistance to metal–mineral abrasion than coatings prepared in an air environment—0.61 vs. 0.44 for commercial usage electrode and 0.67 vs. 0.60 for underwater welding. We also proved that in the water, the abrasive wear was greater for specimens welded by the general use electrode, which results in a higher hardness of the layer surface. In the air welding conditions, the layer welded by the electrode for use in the water was characterized by a lower hardness and higher resistance to metal–mineral abrasion. The microstructure of the prepared layers is different for both the environment and both electrodes, which results in abrasive wear resistance.

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“…For example, an interesting and original technique of laser cladding under high frequency micro-vibration was developed and presented by Li et al [22]. Many researchers point to several advantages of laser cladding over other methods of coatings [23][24][25][26][27]. However, current trends to ensure the highest energy efficiency of machines and devices, including the durability and reliability of machine components and tools, force the search for new or improved materials, as well as for new methods of their manufacturing, to overcome the limitations of current technologies.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Laser Deposition of Fe-Based Metallic Powder under Cryogenic Conditions

Lisiecki

Ślizak²

2020

Metals

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The purpose of this study was to demonstrate the novel technique of laser deposition of Fe-based powder under cryogenic conditions provided by a liquid nitrogen bath. Comparative clad layers were produced by conventional laser cladding at free cooling conditions in ambient air and by the developed process combining laser cladding and laser gas nitriding (hybrid) under cryogenic conditions. The influence of process parameters and cooling conditions on the geometry, microstructure, and hardness profiles of the clad layers was determined. The optical microscopy (OM), scanning electron microscopy (SEM), energy-dispersive spectrometer (EDS), and XRD test methods were used to determine the microstructure and phase composition. The results indicate that the proposed technique of forced cooling the substrate in a nitrogen bath during the laser deposition of Fe-based powder is advantageous because it provides favorable geometry of the clad, low dilution, a narrow heat-affected zone, a high hardness and uniform profile on the cross-sections, homogeneity, and refinement of the microstructure. The influence of the forced cooling on microstructure refinement was quantitatively determined by measuring the secondary dendrite arm spacing (SDAS). Additionally, highly dispersed nanometric-sized (200–360 nm) precipitations of complex carbides were identified in interdendritic regions.

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Properties and Structure of Deposited Nanocrystalline Coatings in Relation to Selected Construction Materials Resistant to Abrasive Wear

Cited by 24 publications

References 30 publications

Effect of Electrode Waterproof Coating on Quality of Underwater Wet Welded Joints

Effect of Electrode Waterproof Coating on Quality of Underwater Wet Welded Joints

The Abrasive Wear Resistance of Coatings Manufactured on High-Strength Low-Alloy (HSLA) Offshore Steel in Wet Welding Conditions

Hybrid Laser Deposition of Fe-Based Metallic Powder under Cryogenic Conditions

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