Wear resistance and mechanisms of composite hardfacings at abrasive impact erosion wear

Surzhenkov, Andrei; Viljus, Mart; Simson, Taavi; Tarbe, Riho; Saarna, Mart; Casesnoves, Francisco

doi:10.1088/1742-6596/843/1/012060

Cited by 10 publications

(14 citation statements)

References 10 publications

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“…Based on the results of their research, it can be stated that the grain refinement in mills is typically ensured via several fundamental mechanisms, among which are compression, shear (attrition), compression pulse, impact (stroke or collision), impact and shear, tension/bending, splitting, and cutting. Milling can be performed by collisions of particles with the working tools, via mutual collisions between particles, or between particles and their environment [17].…”

Section: Introductionmentioning

confidence: 99%

“…Baláž wrote in his study [26] that the main advantages of a high-speed disintegrator are continuity of the grinding process, and variety of working tools that can be employed. On the other hand, Surzhenkov et al stated the main disadvantage to be that the grinding elements are prone to abrasion/wear [17].…”

Section: Introductionmentioning

confidence: 99%

“…The presupposed effect of particles' shapes on the degree of abrasion is based on a theory assuming that blunt shapes exert less pressure on the grinding tools and consequently act more like particles providing surface hardening via imposing shear strain and produce less wear than sharp-edged particles. For milled material featuring wider size fractions, the largest grains exert strong point loads on the surfaces of the grinding elements; i.e., such material is more abrasive [17,30].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Imposed Shear Strain on Steel Ring Surfaces during Milling in High-Speed Disintegrator

et al. 2020

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This contribution characterizes the performance of a DESI 11 high-speed disintegrator working on the principle of a pin mill with two opposite counter-rotating rotors. As the ground material, batches of Portland cement featuring 6–7 Mohs scale hardness and containing relatively hard and abrasive compounds with the specific surface areas ranging from 200 to 500 m2/kg, with the step of 50 m2/kg, were used. The character of the ground particles was assessed via scanning electron microscopy and measurement of the absolute/relative increase in their specific surface areas. Detailed characterization of the rotors was performed via recording the thermal imprints, evaluating their wear by 3D optical microscopy, and measuring rotor weight loss after the grinding of constant amounts of cement. The results showed that coarse particles are ground by impacting the front faces of the pins, while finer particles are primarily milled via mutual collisions. Therefore, the coarse particles cause higher abrasion and wear on the rotor pins; after the milling of 20 kg of the 200 m2/kg cement sample, the wear of the rotor reached up to 5% of its original mass and the pins were severely damaged.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Imposed Shear Strain on Steel Ring Surfaces during Milling in High-Speed Disintegrator

et al. 2020

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“…In previous publications, a series of mathematical models for tribology, erosion, corrosion, and tribocorrosion models are presented and optimized by Casesnoves et al [1], [4], Casesnoves and Surzhenkov [2] and Suzenkov et al [3]. In general, and to date, general simulation methods of modelling have been improved and tested.…”

Section: Introductionmentioning

confidence: 99%

“…The second generation of functional models in tribology comprises a series of new mathematical modelling methods based on derivable and integrable functions [2], [3]. In other words, the surfactal variety of particular reinforced metals makes it convenient to adapt the modelling on the proper stochastic distribution of compounds along the surface that is exposed to abrasive wear, plastic deformation, cutting wear, erosion of other types, corrosion or tribocorrosion.…”

Section: Introductionmentioning

confidence: 99%

A Mathematical Model for Abrasive Erosion Wear in Composite Fe-Based Matrix With Wc-Co Reinforcement

Casesnoves¹,

Surzhenkov²

2017

Materials and Contact Characterisation VIII

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This paper presents a new functional-computational model for metal-matrix composites (MMC), specifically for coatings with coarse spherical WC-Co reinforcement. We have developed, simulated and optimized the model based on previous classical approximations. The experimental data to validate this model are the laboratory tribotest-abrasion measurements and complementary appropriate numerical reports published internationally. Programming software was designed both with nonlinear optimization and curve-fitting subroutines. Results comprise the model construction from theory to computational validation on the laboratory statistical and numerical database. Additional simulations/optimization related to other models are also shown together with conceptual details of the next generation of functional models.

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Advances in Thermally Sprayed WC-Based Wear-Resistant Coatings: Co-free Binders, Processing Routes and Tribological Behavior

2022

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A growing understanding of wear behavior of various thermally sprayed ceramic–metallic matrix coatings has occurred over recent years. This has resulted from the continuous evolution in spraying methods as well as material feedstock, and the corresponding new aspects of the field that have been thoroughly explored. This paper aims to review recent developments in thermally sprayed tungsten carbide-based coatings, with specific emphasis on evaluating alternative binders, processing routes and tribological behavior of the coatings. A comprehensive evaluation of various compositions as binders for WC-based coatings, considering environmental concerns and market requirements has been carried out. The properties and performance of various potential alternatives for cobalt as a conventional binder for these coatings have been assessed. Moreover, different thermal spray methods have been reviewed, particularly highlighting the role of processing parameters, phase change and feedstock characteristics in the high-velocity oxy-fuel (HVOF) and high-velocity air fuel (HVAF) techniques. A comparison is made between HVAF and HVOF coatings in terms of their performance under different wear environments. Finally, various scenarios of material removal in HVAF and HVOF coatings, under various wear conditions, have also been reviewed.

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Wear resistance and mechanisms of composite hardfacings at abrasive impact erosion wear

Cited by 10 publications

References 10 publications

Effect of Imposed Shear Strain on Steel Ring Surfaces during Milling in High-Speed Disintegrator

Effect of Imposed Shear Strain on Steel Ring Surfaces during Milling in High-Speed Disintegrator

A Mathematical Model for Abrasive Erosion Wear in Composite Fe-Based Matrix With Wc-Co Reinforcement

Advances in Thermally Sprayed WC-Based Wear-Resistant Coatings: Co-free Binders, Processing Routes and Tribological Behavior

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