Mechanical and Tribological Properties of HVOF-Sprayed (Cr3C2-NiCr+Ni) Composite Coating on Ductile Cast Iron

Książek, Marzanna; Radecka, M.; Richert, M.; Tchórz, Adam

doi:10.1007/s11665-016-2226-x

Cited by 21 publications

(11 citation statements)

References 13 publications

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“…As a result, it is difficult to interpret the results and examine the applications of Al 2 O 3 -TiO 2 coatings. Moreover, the literature survey reveals that only few studies focus on the microstructure and wear resistance properties of cermet coatings, e.g., Cr 3 C 2 -NiCr/Ni [20], WC-Co/Cr-NiCrFeBSiC [21], and Al 2 O 3 -TiO 2 /NiMoAl [15] cermet coatings. Nevertheless, the cavitation erosion resistance of LVOF-sprayed Al 2 O 3 -TiO 2 /NiMoAl composite coatings have not been previously identified; hence, it seems worth investigating new functional applications of these coatings.…”

Section: Introductionmentioning

confidence: 99%

Cavitation Erosion Resistance and Wear Mechanism Model of Flame-Sprayed Al2O3-40%TiO2/NiMoAl Cermet Coatings

Szala

Hejwowski

2018

Coatings

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This manuscript deals with the cavitation erosion resistance of flame-sprayed Al2O3-40%TiO2/NiMoAl cermet coatings (low-velocity oxy-fuel (LVOF)), a new functional application of cermet coatings. The aim of the study was to investigate the cavitation erosion mechanism and determine the effect of feedstock powder ratio (Al2O3-TiO2/NiMoAl) of LVOF-sprayed cermet coatings on their cavitation erosion resistance. As-sprayed coatings were investigated for roughness, porosity, hardness, and Young’s modulus. Microstructural characteristics of the cross section and the surface of as-sprayed coatings were examined by light optical microscopy (LOM), scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD) methods. Coating cavitation tests were conducted in accordance with the ASTM G32 standard using an alternative stationary specimen testing method with usage of reference samples made from steel, copper, and aluminum alloys. Cavitation erosion resistance was measured by weight and volume loss, and normalised cavitation erosion resistance was calculated. Surface eroded due to cavitation was examined in successive time intervals by LOM and SEM-EDS. On the basis of coating properties and cavitation investigations, a phenomenological model of the cavitation erosion of Al2O3-40%TiO2/NiMoAl cermet coatings was elaborated. General relationships between their properties, microstructure, and cavitation wear resistance were established. The Al2O3-40%TiO2/NiMoAl composite coating containing 80% ceramic powder has a higher cavitation erosion resistance than the reference aluminium alloy.

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Section: Introductionmentioning

confidence: 99%

Cavitation Erosion Resistance and Wear Mechanism Model of Flame-Sprayed Al2O3-40%TiO2/NiMoAl Cermet Coatings

Szala

Hejwowski

2018

Coatings

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“…The HVOF coating process does not affect the properties of substrate material (Chatha et al, 2016). Ksiazek et al (2016) observed that this spraying process provides homogeneous coatings having low value of porosity along with high hardness. The coatings produced with HVOF method have high adhesive strength with the base material and also individual splats have high cohesive strength (Kong et al, 2003;Sidhu et al, 2006a).…”

Section: Introductionmentioning

confidence: 92%

Mechanical and microstructural properties of carbon nanotubes reinforced chromium oxide coated boiler steel

Goyal

Singh²,

Bhatia³

2018

WJE

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Purpose The purpose of this study was to fabricate carbon nanotubes (CNT)-reinforced chromium oxide coatings and investigate mechanical and microstructural properties of these newly developed coatings on the boiler tube steel. Design/methodology/approach 1 and 4 Wt.% CNT-reinforced Cr2O3 composite coatings were prepared and successfully deposited on ASTM-SA213-T22 (T22) boiler tube steel substrates using high-velocity oxy fuel (HVOF) thermal spraying method. Microhardness, porosity, metallography, X-ray diffraction (XRD), scanning electron microscopy (SEM)/energy-dispersive X-ray spectroscopy, cross-sectional elemental analysis and X-ray mapping analysis have been used to examine the coated specimens. Findings The porosity of the CNT-Cr2O3 composite coatings was found to be decreasing with the increases in CNT content, and hardness has been found to be increasing with increase in percentage of CNT in the composite coatings. The CNT were able to increase hardness by approximately 17 per cent. It was found that the CNT were uniformly distributed throughout Cr2O3 matrix. The CNT were found to be chemically inert during the spraying process. Originality/value It must be mentioned here that studies related to fabrication of HVOF sprayed CNT reinforced Cr2O3 composite coatings on T22 boiler tube steel are not available in the literature. Hence, present investigation can provide valuable information related to fabrication and properties of CNT reinforced coatings on boiler steel.

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“…Again, Ksiazek et al [41] found that composite carbide coating (Cr3C2-NiCr+Ni) done by HVOF spray method produced dense coating with low porosity and high hardness. This coating gave good resistance to the cast iron against cracking.…”

Section: Studies Relatetd To Tungsten Carbide Coatings and Hvof Spray Processmentioning

confidence: 99%

Tribological Study of HVOF Sprayed Tungsten Carbide Coated Stainless Steel

Kumar¹,

Singh²,

Singari³

2020

IJAPIE

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Corrosion and Wear, or a combination of both, are the main causes of degradation of metals used in the various industrial sectors. Degradation of the metals can be slowed down by adding a layer of resistant coating on the metal surface. This coating separates the base metal from a corrosive environment, reduces wear, and improves the appearance of the metal. The workpiece after coating becomes a composite that has properties far better than the substrate alone. There are various coating techniques, HVOF is one of the most important and widely used processes to protect the metals from wear, corrosion by providing hard and dense coatings. WC coating done by the high-velocity oxy-fuel (HVOF) spray method is the widely used method for providing a layer of corrosive resistance to a wide range of materials that are used in many different industries. In this study, Tungsten carbide (WC-12CO) Coating, HVOF Spray method was studied in great detail. Tungsten Carbide coating was done on a SUS400 Stainless steel substrate using HVOF Spray Process. An, Experiment was done to analyze the various effect of different parameters namely, oxygen rate, propane (fuel) rate, powder rate, spray distance on hardness, and surface roughness of a SUS 400 Stainless Steel substrate. Process optimization was done by using Taguchi and ANOVA methods. It was found that achieving maximum hardness was greatly dependent on propane (fuel) rate followed by powder rate, spray distance, and oxygen rate. The hardness decreases with the increasing fuel rate. And, achieving minimum surface roughness was greatly dependent on spray distance followed by oxygen rate, propane (fuel) rate, powder rate. Surface Roughness increases with increasing spray distance.

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Mechanical and Tribological Properties of HVOF-Sprayed (Cr3C2-NiCr+Ni) Composite Coating on Ductile Cast Iron

Cited by 21 publications

References 13 publications

Cavitation Erosion Resistance and Wear Mechanism Model of Flame-Sprayed Al2O3-40%TiO2/NiMoAl Cermet Coatings

Cavitation Erosion Resistance and Wear Mechanism Model of Flame-Sprayed Al2O3-40%TiO2/NiMoAl Cermet Coatings

Mechanical and microstructural properties of carbon nanotubes reinforced chromium oxide coated boiler steel

Tribological Study of HVOF Sprayed Tungsten Carbide Coated Stainless Steel

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