Post-processing of Ni-Cr-Al2O3 Thermal Spray Coatings Through Friction Stir Processing for Enhanced Erosion–Corrosion Performance

Rani, Manjeet; Perumal, G.; Roy, Manish; Grewal, Harpreet Singh; Singh, Harpreet; Arora, Harpreet Singh

doi:10.1007/s11666-019-00891-z

Cited by 18 publications

(9 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, from Figure 4 a significant improvement in the bonding between the coating's binder phase and the secondary alumina particles is observed, attributed to the elevated processing temperature caused by mechanical mixing and high strain rate plastic deformations during FSP. More importantly, the micro-reinforcement mechanisms could occur due to improved dispersion of the secondary particles and the dissolution of different phases present in FSP coatings similar to the findings in [69]. with the increase in the number of passes during the friction stir processing [41].…”

Section: Microstructural and Mechanical Characterizationmentioning

confidence: 64%

Modification of Cold-Sprayed Cu-Al-Ni-Al2O3 Composite Coatings by Friction Stir Technique to Enhance Wear Resistance Performance

et al. 2022

View full text Add to dashboard Cite

An innovative hybrid process combining two effective surface modification techniques, cold spray (CS) and friction stir processing (FSP), was proposed to refine the microstructure of Cu-Al-Ni-Al2O3 composite coating material. FSP was performed under constant rpm using extensive cooling conditions to remove heat generated during the operation. Microstructural characterizations such as optical micrography (OM), scanning electron microscopy (SEM), Electron Backscatter Diffraction (EBSD), Energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD) were performed to evaluate the microstructural evolution of the coatings before and after FSP treatment. Mechanical characterizations such as microhardness and elastic modulus were measured using micro-depth sensing techniques. Furthermore, sliding wear tests were performed to study the wear resistance of the as-sprayed and processed coatings. The findings suggest that after FSP, there is an improvement in microstructure of the coating layers with the elimination of particle boundaries, micro-pores and micro-cracks, and processed coatings showed an improvement in mechanical properties. Furthermore, there was a slight reduction in the wear rate of the deposited CuAlNi-Al2O3 composite coatings. Among all the test coatings, friction stir processed S1 coating showed the lowest wear rate, which was an almost two times lower wear rate than its unprocessed counterparts.

show abstract

Section: Microstructural and Mechanical Characterizationmentioning

confidence: 64%

Modification of Cold-Sprayed Cu-Al-Ni-Al2O3 Composite Coatings by Friction Stir Technique to Enhance Wear Resistance Performance

et al. 2022

View full text Add to dashboard Cite

show abstract

“…In addition, Friction stir processing can be used to improve the surface integrity of numerous metals. Rani et al [183] enhanced erosion-corrosion performance by post-processing of high-velocity flame sprayed Ni-Cr-Al 2 O 3 coating on SS316L stainless steel through friction stir processing (FSP). The results showed that a significant improvement in microstructure refinement along with enhanced fracture toughness and hardness of the coating after FSP.…”

Section: Conquering Methods To Meet These Challengesmentioning

confidence: 99%

Influence of processing conditions on the properties of thermal sprayed coating: a review

Kumar

2021

Surface Engineering

View full text Add to dashboard Cite

Thermal spray coatings are a group of coating processes that enhance the performance of parts by adding functionality to surfaces. In the past few decades, thermal spray coatings technology was used to resist wear, erosion, corrosion, cavitation, repair and dimensional restoration of parts. However, the consideration of process parameters setting develops a reliable coating having high mechanical and morphological properties for demanding coating applications. Hence the aim of this review paper is to provide an overview of distinct thermal spray coatings, historical development, hot corrosion mechanism and effect of chemical composition and alloying elements on the hot corrosion resistance of super alloys in USC power plants. Then the effects of processing conditions on the mechanical properties of distinct thermal sprayed coatings obtained at distinct process parameters are summarised. Finally, the distinct thermal post treatments such as fusing of self-flux alloys, remelting and solid heat treatments, merits, demerits and future challenges are discussed.

show abstract

“…The erosion rates of the friction stir processed steel were reduced by more than 50%. To compensate the shortcomings of coating, Rani et al performed FSP of a flame sprayed (coated) SS316L steel and investigated the erosion performance [85]. They used Ni-Cr-40Al 2 O 3 powders to deposit the coatings by flame spray.…”

Section: Friction Stir Processingmentioning

confidence: 99%

Surface and bulk modification techniques to mitigate silt erosion in hydro turbines: a review of techniques and parameters

Singh

Nath

2022

Surface Engineering

View full text Add to dashboard Cite

Silt erosion causes big efficiency and economic losses to hydro turbines and other industries involving the relative motion of the slurry/silt. This article reviews various techniques employed in the literature to mitigate the silt erosion. The main prominence is given to the latest technologies rather than the number of articles on the same technology. The available techniques are classified into two broad categories namely, surface modification techniques, and bulk material modification techniques; then reviewed systematically. The parameters (properties) which largely influence the material loss, for corresponding techniques, are also familiarized. In addition to this, how these parameters were improved and why these parameters enhanced the slurry erosion performance are discussed. Surface coating increases the surface hardness, is found to be the most addressed and most successful technique for the said purpose. The hardness of the substrate was found to be the most addressed property which can largely control the silt erosion.

show abstract

Post-processing of Ni-Cr-Al2O3 Thermal Spray Coatings Through Friction Stir Processing for Enhanced Erosion–Corrosion Performance

Cited by 18 publications

References 46 publications

Modification of Cold-Sprayed Cu-Al-Ni-Al2O3 Composite Coatings by Friction Stir Technique to Enhance Wear Resistance Performance

Modification of Cold-Sprayed Cu-Al-Ni-Al2O3 Composite Coatings by Friction Stir Technique to Enhance Wear Resistance Performance

Influence of processing conditions on the properties of thermal sprayed coating: a review

Surface and bulk modification techniques to mitigate silt erosion in hydro turbines: a review of techniques and parameters

Contact Info

Product

Resources

About