Characteristic study of cold sprayed N06601 superalloy surface

Singh, Harminder; Khosla, Henna; Walia, Gurpreet Singh; Sidhu, T. S.; Kalsi, Sachin; Karthikeyan, J.

doi:10.1080/02670844.2017.1312220

Cited by 8 publications

(4 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As the particles exit from the nozzle at high velocities and impinge on a substrate, they undergo significant plastic deformations and bond to the substrate [34][35][36]. Since the temperature remains below the melting point of the particles material, CS can minimise effects of oxidation, melting, evaporation and other common problems suffered by thermal spraying processes [37].…”

Section: Introductionmentioning

confidence: 99%

A perspective review on the bonding mechanisms in cold gas dynamic spray

Viscusi

Astarita

Gatta

et al. 2019

Surface Engineering

View full text Add to dashboard Cite

The Cold Gas Dynamic Spray technology, generally referred as Cold Spray, is a relatively new additive manufacturing technique able to produce fully dense coatings through the deposition of particles on a substrate. Fine powders are accelerated to high velocity and projected onto a substrate, upon impact with the target surface, conversion of kinetic energy to plastic deformation occurs and the solid particles deform and bond together. During the cold spray deposition process, the particles remain in a solid state during the deposition, resulting in high-quality coatings with low residual stresses and oxide inclusions. The relative lower process temperatures allow the cold spray to manufacture coatings on high temperature-sensitive materials. It could also be a valid method for deposition of a wide variety of materials, from metallic alloys up to ceramics and composites. Depending on the materials employed as substrate and coating, different bonding mechanisms can occur during the deposition. The present review aims to summarise the main bonding theories proposed up to now for the cold spray, focusing on both the particle deformation behaviour during the contact with the surface and the interfacial bonding mechanisms. The available theories for different substrate/coating configurations will be discussed and compared. The effects of deposition parameters, the substrate's surface and microstructure of feedstock powders on the bonding mechanism will also be discussed.

show abstract

Section: Introductionmentioning

confidence: 99%

A perspective review on the bonding mechanisms in cold gas dynamic spray

Viscusi

Astarita

Gatta

et al. 2019

Surface Engineering

View full text Add to dashboard Cite

show abstract

“…Tribology tests on pin‐on‐disc machine gave an average mean friction coefficient of 0.071 ± 0.006. The detailed coating microstructure analysis is presented in a previous study …”

Section: Methodsmentioning

confidence: 99%

“…The cold spray‐coating process has now been established in the market mainly due to its working at temperatures lower than that of the feedstock powder melting point. This solid‐state coating process has many advantages such as the formation of a highly dense coating with low porosity and without oxidation of coating particles during the coating process . It has been estimated from the results of this study that the cold spray modified alloy may increase the working efficiency of plant components in chlorine‐based or other highly corrosive environmental conditions.…”

Section: Introductionmentioning

confidence: 95%

Analysis of cold spray‐coated boiler‐tube material in a chlorine‐based corrosive environment at 900°C

Singh

Kalsi

Sidhu

2019

Materials & Corrosion

Self Cite

View full text Add to dashboard Cite

Energy generation, especially through waste incinerators is the need of the hour, as it serves the dual purpose of waste management and enhances the energy bank. However, mainly because of the presence of chlorine elements in the waste, there is an extensive corrosive failure of incinerator components utilized for energy generation. Therefore, there is need to work on enhancing the material life in these or similar plants, which will further increase plant efficiency. In this study, a corrosion‐resistant coating of 75%Cr3C2–25%NiCr is tested in a Na2SO4–10%NaCl environment at 900°C under cyclic conditions. The 289‐μm‐thick cold spray‐coating was dense (porosity, 0.925%), hard (average, 866 HV) and smooth with a surface roughness of 6.07 μm. Tribology tests on the pin‐on‐disc machine gave an average mean friction coefficient of 0.071 ± 0.006. The coating microstructure developed shows corrosion protective ability under chlorine‐containing high‐temperature conditions, with an overall weight gain of 10.235 mg/cm2, which is 60.9% less in comparison to the 26.177 mg/cm2 shown by the bare alloy. The coating acts as a shield to the substrate against corrosion attack.

show abstract

“…Places with high energy as discussed in chapter 3, are good places for pit initiation. Balani et al [61] reported that by increasing the gas temperature and consequently increasing the plastic deformation, due to high density of dislocation, samples become more sensitive to the pitting corrosion. They showed that during the plastic deformation lots of dislocation are generated in the form of dislocation walls.…”

Section: Pit Initiation Sources In Colds Spray Samplesmentioning

confidence: 99%

Effect of residual stress at particle/particle interfaces on etching behavior of aluminum samples made by cold spray process

Alavian

View full text Add to dashboard Cite

Cold spray (CS) is a process in which solid powders are accelerated to high velocities toward a substrate, where they impact and undergo extreme plastic deformation, leading to solid-state bonding. Successive particle impact leads to the buildup of a dense coating. Different materials such as metals, ceramics, composites, and polymers can be deposited by this process, enabling a wide range of applications. Cold spray as a surface modifying technique has long been applied to control fatigue, wear, and corrosion of materials. Low porosity, low oxygen contents and inclusions, low residual stress and retention of original microstructure make cold sprayed coating a good candidate for material protective layer in corrosive environments. For these reasons, understanding of corrosion behavior, related to structural details such as grain size, defects, and porosity, as well as residual stress, would be an important contribution.In this work, cold sprayed Aluminum samples were produced using different process variations. Defect structure was systematically explored, and through etching studies, thermodynamic modeling and FEM, the effect of these variations was analyzed for corrosion behavior. Results were compared to work in the literature, and new arguments for behavior of CS materials in corrosive environments were developed.

show abstract

Characteristic study of cold sprayed N06601 superalloy surface

Cited by 8 publications

References 46 publications

A perspective review on the bonding mechanisms in cold gas dynamic spray

A perspective review on the bonding mechanisms in cold gas dynamic spray

Analysis of cold spray‐coated boiler‐tube material in a chlorine‐based corrosive environment at 900°C

Effect of residual stress at particle/particle interfaces on etching behavior of aluminum samples made by cold spray process

Contact Info

Product

Resources

About