Influence of Al2O3-13TiO2 powder on a C45 steel using atmospheric plasma spray process

Mahu, G.; Munteanu, Corneliu; Istrate, Bogdan; Benchea, Marcelin; Lupescu, Ștefan

doi:10.1088/1757-899x/444/3/032010

Cited by 7 publications

(6 citation statements)

References 5 publications

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“…However, from the cross-sectional analysis it was observed that in both the cases higher rate of oxidation rate is observed in the base metal zone. Mahu et al [23] analyzed the influence of plasma sprayed Al 2 O 3 -13TiO 2 coatiing on a C45 steel (crankshaft material). The different testing techniques such as XRD, optical and electronic microscopy were used to analyze the as sprayed coating.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Comparative study of hot corrosion behavior of thermal sprayed alumina and titanium oxide reinforced alumina coatings on boiler steel

Singh

Kumar

2020

Mater. Res. Express

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The current work evaluates the effect of hot corrosion on ASTM-SA213-T-22 Steel with a coating of 100Al 2 O 3 and 20TiO 2 -Al 2 O 3 at 900°C in the molten salt environment of (Na 2 SO 4 -60% V 2 O 5 ). The coatings were sprayed by plasma spray technique. The bare and coated samples were placed inside the muffle furnace at 900°C for 50 cycles. Each cycle consisted of heating for 1 h and 20 min of cooling at ambient temperature. The kinetics of hot corrosion was analyzed by measuring mass gain after each cycle. The results were achieved by using visual examination, mass change measurement, XRD and SEM/EDS analysis. The result revealed that bare steel was more affected with corrosion and gained more mass due to the development of iron oxide (Fe 2 O 3 ) than the coated sample. Fe 2 O 3 and Cr 2 O 3 were found as major phase in oxide scale of T-22 uncoated steel specimen. The 100Al 2 O 3 and 20TiO 2 -Al 2 O 3 coated specimen indicated the reduction in mass gain by 25.41% and 67.02% respectively as compared to uncoated specimen. Al 2 O 3 coating with the combination of TiO 2 showed better adhesion properties. The presence of TiO 2 enhanced the durability and strength of Al 2 O 3 coating to withstand high temperatures.

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Section: Introductionmentioning

confidence: 99%

RETRACTED: Comparative study of hot corrosion behavior of thermal sprayed alumina and titanium oxide reinforced alumina coatings on boiler steel

Singh

Kumar

2020

Mater. Res. Express

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“…Since steel is a common material used on power transmission and transformation equipment and it is exposed to highly corrosive environments for a long time, this can aggravate the corrosion of the steel substrate. Therefore, researchers have carried out a lot of exploration to prepare different states of Al coatings on steel substrates to study the protective effect of the coatings on the substrate [8,[16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Study of Morphology and Corrosion Behavior of Aluminum Coatings on Steel Substrates under Simulated Acid Rain Conditions

Wen

et al. 2023

Metals

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In this paper, aluminum coatings were prepared on a steel substrate by thermal spraying, and the corrosion morphology and corrosion resistance of the coating were investigated by salt spray and immersion tests. The results showed that after three months of salt spray tests, the coating still exhibited a surface morphology without significant damage and had good damage tolerance. Further effective protection of the substrate can be achieved by spraying the coating surface with paint. After three months of immersion test, the corrosion rate of samples with thicker coatings was located between 0.002 mm/y and 0.005 mm/y, and only a small amount of corrosion products was observed on the coating surface. The coated samples after salt spray and immersion tests maintained sufficient adhesion (17.07 MPa and 19.25 MPa), and the surface aluminum coating was highly reliable for protection of the steel substrate. In general, the reliability of the coating can be further improved by painting the surface of the thicker Al coating. This provides more ideas for the protection of transmission and transformation equipment.

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“…Coatings 2023, 13,1984 2 of 15 For instance, F. Zhang et al developed cermet (WC-CoCr, CrC-NiCr) and alloy (Ni selffluxing, Fe-based amorphous) coatings using liquid feedstock-based high-velocity oxy-fuel (HVOF) for geothermal drilling components, and found negligible damage to coatings in a simulated geothermal erosion-corrosion environment [5]. Furthermore, coatings, especially surfaces with micro and/or nanostructures play a crucial role in improving the overall efficiency and reliability of geothermal energy generation [6].…”

Section: Introductionmentioning

confidence: 99%

Spray Parameters and Coating Microstructure Relationship in Suspension Plasma Spray TiO2 Coatings

Mittal,

Malik,

Bhuvanendran Nair Jayakumari

et al. 2023

Coatings

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In recent years, there has been growing interest in thermal spray techniques using suspension or solution-based coatings. These techniques offer precise control over particle size and microstructure, improving feedstock flowability and allowing for high-quality coating customization. Spray parameters, such as stand-off distance (SOD) and feedstock flow rate, can alter the performance and characteristics of these coatings. Geothermal power plant heat exchangers often face issues like corrosion, scaling, and fouling. The literature suggests that these issues could be mitigated, at least in part, by the use of spray coatings. In this study, TiO2 coatings were applied on a carbon steel substrate using suspension plasma spray (SPS) to enhance the performance of geothermal heat exchanger materials. The impact of SOD (50, 75, and 100 mm) and feedstock flow rate (10, 20, and 30 mL/min) on these coatings was examined through various techniques, including scanning electron microscope (SEM), profilometry, X-ray diffraction (XRD), and adhesion testing. The results demonstrated that coatings deposited using a 10 mL/min feedstock flow rate were well adhered to the substrate due to the efficient melting of the coating material, but as the SOD and feedstock flow rate increased due to poor thermal and kinetic energy exchange between the torch and feedstock particles, adhesion between the coating and substrate decreased.

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Influence of Al2O3-13TiO2 powder on a C45 steel using atmospheric plasma spray process

Cited by 7 publications

References 5 publications

RETRACTED: Comparative study of hot corrosion behavior of thermal sprayed alumina and titanium oxide reinforced alumina coatings on boiler steel

RETRACTED: Comparative study of hot corrosion behavior of thermal sprayed alumina and titanium oxide reinforced alumina coatings on boiler steel

Study of Morphology and Corrosion Behavior of Aluminum Coatings on Steel Substrates under Simulated Acid Rain Conditions

Spray Parameters and Coating Microstructure Relationship in Suspension Plasma Spray TiO2 Coatings

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