Oxidation behavior of near nanostructured coating developed by the HVOF process

Rengarajan, Shankar; Balasubramanian, K.R.; Paramashivan, Sivapirakasam Suthangathan; Senthilkumar, V.

doi:10.1002/maco.202213440

Cited by 3 publications

(3 citation statements)

References 32 publications

(31 reference statements)

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“…In recent years, efforts have been focused on improving these techniques further. For example, advancements in thermal spray coatings have led to the development of nanostructured coatings with enhanced mechanical and tribological properties [47,48]. The refinement of PVD and CVD processes has enabled the deposition of thin films with precise control over composition, thickness, and microstructure [49][50][51].…”

Section: Chemical Techniquesmentioning

confidence: 99%

Surface Engineering of Metals: Techniques, Characterizations and Applications

Ramezani

Ripin

Pasang

et al. 2023

Metals

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This paper presents a comprehensive review of recent advancements in surface engineering of metals, encompassing techniques, characterization methods and applications. The study emphasizes the significance of surface engineering in enhancing the performance and functionality of metallic materials in various industries. The paper discusses the different techniques employed in surface engineering, including physical techniques such as thermal spray coatings and chemical techniques such as electroplating. It also explores characterization methods used to assess the microstructural, topographical, and mechanical properties of engineered surfaces. Furthermore, the paper highlights recent advancements in the field, focusing on nanostructured coatings, surface modification for corrosion protection, biomedical applications, and energy-related surface functionalization. It discusses the improved mechanical and tribological properties of nanostructured coatings, as well as the development of corrosion-resistant coatings and bioactive surface treatments for medical implants. The applications of surface engineering in industries such as aerospace, automotive, electronics, and healthcare are presented, showcasing the use of surface engineering techniques to enhance components, provide wear resistance, and improve corrosion protection. The paper concludes by discussing the challenges and future directions in surface engineering, highlighting the need for further research and development to address limitations and exploit emerging trends. The findings of this review contribute to advancing the understanding of surface engineering and its applications in various sectors, paving the way for future innovations and advancements.

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Section: Chemical Techniquesmentioning

confidence: 99%

Surface Engineering of Metals: Techniques, Characterizations and Applications

Ramezani

Ripin

Pasang

et al. 2023

Metals

View full text Add to dashboard Cite

show abstract

“…The nanostructured coating revealed an excellent resistance to corrosion compared to the micro coating and the substrate material, as there was no spalling formation. [ 19,20 ] Hot corrosion studies were performed using the flue gas and ash in simulated environments; the coatings with enriched chromium content prevent the nucleation of the sulfides and oxides and thus, the corrosion resistance is higher on the coating. [ 21 ] Powders of 316L SS, IN625, and CrC–NiCr were deposited on an AISI 316 substrate by cold spraying, and their resistance to cavitation erosion was examined.…”

Section: Introductionmentioning

confidence: 99%

High temperature corrosion performance of Inconel 625 hard overlays deposited on stainless steel substrate

Nachimuthu,

Gosipathala,

Arasappan

et al. 2024

Materials & Corrosion

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In elevated conditions, austenitic stainless steels suffer intense damage by corrosion because of the severe oxide scale development. Giving stainless steel a corrosion‐resistant surface coating can prevent excessive damage. In this case, welding‐based overlaying is a potential method to restore the damaged parts as it has a higher productivity rate. This investigation articulates the corrosion resistance behavior of the multiple overlapped Inconel 625 (IN625) weld overlays on the AISI 316L substrate plate. The corrosion resistance at elevated temperatures was investigated with kinetic curves, further revealing the corrosion products from the sample surface. Characterization techniques like scanning electron microscopy with energy‐dispersive spectroscopy, X‐ray diffraction, and Raman spectroscopy were employed to analyze the corrosion products. Hot corrosion kinetics in the molten salt environment (Na2SO4 + V2O5) revealed that the IN625 overlay samples gained a weight of 40.15 mg/cm2, and the substrate had a weight gain of 65.42 mg/cm2. From the hot oxidation kinetics, it is evident that the mass gained by the substrate is more than twice that of the Inconel overlay sample. Furthermore, the formation of oxides and spinel phases rich in nickel (NiO, NiCr2O4) highly influenced the corrosion kinetics of the multiple overlapped IN625 overlay sample. The AISI 316L substrate sample revealed the existence of critical oxide phases such as Fe2O3 and Cr2O3, which were lesser and did not influence the corrosion resistance at 900°C. In the present investigation, the multiple overlapped IN625 weld overlay offered excellent corrosion resistance at high temperature compared to the AISI 316L.

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“…Inconel 718 (IN718) with micro and nanostructured NiCr coatings on molten salt of Na 2 SO 4 and 60% V 2 O 5 at 900 °C was performed for oxidation and corrosion study. From the microstructure study, coating of Cr 3 C 2 NiCrBSi on base was highly effective over corrosion which was due to protective oxides [5,6]. Simulated coal ash and coalcombusted flue gas environment at 650 °C for 250 and 500 h were used to evaluate the high-temperature corrosion behaviour of five nickel alloy coatings used in coalfired boilers in the Zhundong region.…”

Section: Introductionmentioning

confidence: 99%

Comparative investigation of surface modification and corrosion behaviour on SS304 and SS316 Coated with Inconel 625 in Air and Molten Salt Environment

Sundaram¹,

Singaravelu²,

Vikneswaran³

2022

Surf. Topogr.: Metrol. Prop.

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The high operating temperature-based industry extensively requires coating of material surfaces that are subjected to a high-temperature environment to improve their surface and resistance to corrosion. The current study investigated the surface modification and corrosion behaviour of Inconel 625-coated SS304 and SS316 materials in an air and molten salt environment at 800 °C. The plasma spray method was used to coat the Inconel 625 powder over the substrates. Techniques like quantitative weight gain/loss method, surface roughness, hardness measurement, and characterization through microstructure analysis were used to characterize and analyze the corrosion behaviour and microstructure of Inconel coated SS. It was observed that the coat had a noticeably layered structure with layers parallel to the surface of the substrate. The experimental results revealed that the uncoated SS suffered corrosion in the form of residue and peeling up of its oxide scale. Whereas the surface of the IN625-coated SS showed excellent resistance to corrosion formation. It was found that the coating lowered the mass gain of the SS316 by 65% when compared to uncoated SS.

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Oxidation behavior of near nanostructured coating developed by the HVOF process

Cited by 3 publications

References 32 publications

Surface Engineering of Metals: Techniques, Characterizations and Applications

Surface Engineering of Metals: Techniques, Characterizations and Applications

High temperature corrosion performance of Inconel 625 hard overlays deposited on stainless steel substrate

Comparative investigation of surface modification and corrosion behaviour on SS304 and SS316 Coated with Inconel 625 in Air and Molten Salt Environment

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