Microwave-Assisted Post-processing of Detonation Gun-Sprayed Coatings for Better Slurry and Cavitation Erosion Resistance

Babu, Abhishek; Arora, Harpreet Singh; Grewal, Harpreet Singh

doi:10.1007/s11666-019-00914-9

Cited by 27 publications

(8 citation statements)

References 50 publications

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“…Co-based stellite-6 showed better SE resistance compared to Co-free colmonoy-5 clad at 30° impact angle. Babu et al 10 obtained the D-gun sprayed cermet (WC-10Co-4Cr) and Ni coatings on SS316L and executed their post-processing with microwave technique due to its capacity of heating up to atomic level. Microwave heating and post-processing improved the homogenized microstructure of coatings by removing the cracks/splat boundaries and decreasing the porosities, which altered the mechanical properties such as hardness and fracture toughness.…”

Section: Part-i (Effect Of Coating and Reinforcement On Se Performance)mentioning

confidence: 99%

“…27,74 Many authors associated the erosion performance with fracture toughness. 4,10,22,46,[75][76][77][78][79][80][81][82] Fracture toughness (K IC ) is generally defined as the critical stress intensity factor for a preexisting crack when it advances all of a sudden in a rapid way. It is the property of any material with existing crack in the terms of its ability to resist further fracture.…”

Section: Introductionmentioning

confidence: 99%

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Insights to improve the tribo-performance of materials used under slurry erosion applications: A review

Yadav

Singh²

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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Slurry erosion usually results in the form of damage to the materials of different components having underwater working domain. Numerous industries have suffered due to this kind of wear resulting in frequent breakdowns demanding repeated financial assistance and poor productivity. Properties and tribo-performance of materials related to distinct slurry applications play a significant role in arresting the slurry erosion wear. Slurry erosion depends on different parameters such as impact velocity, impingement angle, shape and size of erodent, slurry concentration and so on. These parameters differ from one application to another and accordingly, specific materials are selected knowing the extent and severity of slurry erosion wear. In the last decade, many authors studied parametrically the tribo-slurry erosion performance of materials, few of them correlated their investigations to the actual in situ conditions of applications. Various authors have analyzed the effect of operating parameters on the mechanism of erosion and conducted the comparative studies of different materials. Many of the investigators attempted to improve the properties and tribo-slurry erosion performance of materials through surface modification techniques; coating, reinforcement, heat treatment, thermo-mechanical process etc. This review is an effort to covers all such kind of explorations.

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Section: Part-i (Effect Of Coating and Reinforcement On Se Performance)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Insights to improve the tribo-performance of materials used under slurry erosion applications: A review

Yadav

Singh²

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…In earlier investigations, erosion-resistant coatings were created using coatings made of a range of materials [23]. Babu et al [24] describe various methods for depositing materials using a variety of surface modification techniques, highlighted the importance of thermal spray technologies in the development of coatings. These benefits, especially the ability to cover large scale structures, thermal spraying is now widely employed in the hydro turbine industry.…”

Section: Literature Reviewmentioning

confidence: 99%

Solid particle erosion behavior of nichrome coated duplex stainless steel

2022

IJATEE

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One of the most serious concerns for the industry is material degradation, which leads to premature failure. Solid particle erosion (SPE) is a significant material degradation phenomenon. To be more specific, the erosion problem is made worse by the fluid inclusion of gravel and other contaminants. Despite being well studied and predicted, the process of solid particle erosion is still not properly known. Therefore, additional experimental research is still required to properly understand the erosion process and offer novel erosion resistance strategies. Employing coatings is the most effective technique to reduce/prevent solid particle erosion. The most commonly used methods to improve erosion resistance are proper material selection and the application of coatings. The erosion behaviour of atmospheric plasma-coated Nichrome (NiCr) on coated and uncoated duplex stainless steel (DSS2205) substrates were investigated. The erosion test is performed using an air-jet erosion tester with alumina as the erodent at velocities of 150, 175 and 200 m/s, impact angles of 30°,45° and 90°, and discharge rates of 2.5, 3.75 and 5 gm/min. This study discovered that the most influential factors of erosion are impact angle. When the impact angle is 90°, the velocity is 150 m/s, and the discharge rate is 5 gm/min, the erosion was minimal. Analysis of the surface microstructure reveals many erosion mechanisms linked to various incidence angles. The erosion mechanism changes from micro-ploughing to plastic deformation for low to high impactangles. Furthermore, metallographic examinations are used in conjunction with the experimental results. As per the experimental findings, coating bare substrates with NiCr can substantially increase erosion resistance. Moreover, NiCr coatings on bare substrates showed a 47% reduction in erosion wear, primarily as a result of their better toughness, higher density, improved micro-hardness, and lower porosity.

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“…Furthermore, the slurry erosion rates of CCA composite claddings were compared with TS coatings (as-sprayed and postprocessed), and friction stir-processed SS316L [46][47][48] to evaluate the efficacy of the microwave-derived claddings is shown in Figure 8. The friction stir processing (FSP) is nowadays widely studied for modifying the surface properties of the alloys/ coatings through high strain deformation.…”

Section: Slurry Erosion Behavior and Correlation Parametersmentioning

confidence: 99%

“…Comparative study of slurry erosion rate of microwave-derived CCA composite claddings with thermal spray coatings, friction stir-processed treated TS coatings, and friction stir-processed stainless steel 316L. [46][47][48] TS, thermal spray; FSP, friction stir processing. See Table 2 for the abbreviations used in the current study.…”

Section: Slurry Erosion-corrosion Behaviormentioning

confidence: 99%

Slurry Erosion–Corrosion of Bimodal Complex Concentrated Alloy Composite Cladding

2020

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Herein, bimodal-reinforced AlCoCrFeNi complex concentrated alloy composite cladding on stainless steel 316L substrate using microwave hybrid processing is synthesized. Detailed microstructural analysis of the claddings shows the presence of cellular structure A2 (disordered BCC) with intermetallics (B2 (ordered BCC) and σ phases) at the intercellular regions. The presence of Cr 23 C 6 is also observed for the reinforced claddings due to the dissociation of the SiC particles. The bimodal-reinforced cladding shows the highest hardness (in excess of 800 HV) and fracture toughness (%12 MPa p m), followed by microand nanocomposite claddings. Under slurry erosion condition, the bimodal composite cladding exhibits 10 times better erosion resistance than stainless steel 316L and nonreinforced cladding (1.5-2 times), respectively, at oblique angle followed by nano-and microreinforced unimodal counterparts. The outstanding performance of the bimodal composite cladding under both test conditions is related to higher hardness, fracture toughness, and resistance to plastic deformation. The detailed analysis of the eroded samples shows microcutting and ploughing as a dominant mechanism at an oblique angle while platelets, cracks, and microindents being the contributing factors for erosion at the normal impact angle.

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Microwave-Assisted Post-processing of Detonation Gun-Sprayed Coatings for Better Slurry and Cavitation Erosion Resistance

Cited by 27 publications

References 50 publications

Insights to improve the tribo-performance of materials used under slurry erosion applications: A review

Insights to improve the tribo-performance of materials used under slurry erosion applications: A review

Solid particle erosion behavior of nichrome coated duplex stainless steel

Slurry Erosion–Corrosion of Bimodal Complex Concentrated Alloy Composite Cladding

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