Solid particle erosion of thermal sprayed coatings

Kulu, Priit; Hussainova, Irina; Veinthal, Renno

doi:10.1016/j.wear.2004.03.021

Cited by 91 publications

(59 citation statements)

References 5 publications

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“…However, (Fig. 6), probably caused by erodent particles impinging at low or high (close to 90°) angles, respectively, consistently with erosion mechanisms described in Ref 11,12. Conversely, APS-Cr 2 O 3 coatings do exhibit very large amount of material removal at any time the jet pressure is set at 7 bar. APS-Cr 2 O 3 is the hardest among the present coatings, but it is also rather brittle (i.e., poor toughness) (Ref 5): this compromises its resistance to the more energetic impacts of the fluidized abrasives, thus determining severe mass loss via brittle fracture phenomena, a well-known erosive wear mechanism for APS ceramics ( Ref 15).…”

Section: Resultssupporting

confidence: 83%

“…WC-Co-based coatings, which present high hardness coupled with satisfactory toughness (Ref 5, 6), tend to be very difficult to machine, thus leading to minimum material removal during FR-FBM. Indeed, this favorable combination of material properties makes these coatings highly resistant to particle erosion ( Ref 11,12), a process similar to that occurring in FR-FBM. However, (Fig.…”

Section: Resultsmentioning

confidence: 99%

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Fast Regime Fluidized Bed Machining (FR-FBM) of Thermally Sprayed Coatings

et al. 2008

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Finishing of thermally sprayed metallic, ceramic, and cermet coatings is required to meet tolerances and requirements on surface roughness in most industrial applications. Conventional machining is a costly and time-consuming process, and is difficult to automate. Therefore, this study investigates and develops a new technique highly amenable for automation: fast regime-fluidized bed machining (FR-FBM). Atmospheric plasma sprayed TiO 2 , Cr 2 O 3 , and HVOF-sprayed WC-17%Co and Tribaloy-800 coatings, deposited on AISI 1040 steel substrates, were subjected to FR-FBM treatment. The effects of the leading operational parameters, namely, abrasive size, jet pressure, and processing time, were evaluated on all coatings by using a two/three-levels full factorial design of experiments. The FR-FBM treated surfaces were observed by FE-SEM and their surface finishing was evaluated by contact profilometry. Significant improvements in surface finishing of all the machined thermally sprayed coatings can always be detected, with FR-FBM being able to guarantee the precision and to ensure the closest geometrical tolerances.

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Section: Resultssupporting

confidence: 83%

Section: Resultsmentioning

confidence: 99%

Fast Regime Fluidized Bed Machining (FR-FBM) of Thermally Sprayed Coatings

et al. 2008

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“…However, there are evidences of impact craters and plough marks besides spalling and crack features, particularly in the partially melted regions, which resemble the eroded plastic deformation of thermal sprayed metallic coatings as proven in many literatures. 21,[33][34][35][36][37][38][39] The nanostructured coating has better toughness and presents some ductility because of the remaining nanoparticles. 8,33 Therefore, the erosion failure mechanisms are significantly different for traditional and nanostructured ceramic coatings.…”

Section: Erosion Resistancementioning

confidence: 99%

Solid Particle Erosion Behaviour of Plasma-Sprayed Conventional and Nanostructured Al₂O₃-13 wt% TiO₂Ceramic Coatings

Wang

Tian

Wang

et al. 2015

Transactions of the Indian Ceramic Society

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In this study, conventional and nanostructured Al 2 O 3 -13 wt% TiO 2 coatings were fabricated by plasma spraying. The microstructural characteristics, bonding strength and solid particle erosion behaviours of the two types of coatings were compared. Results indicated that the traditional coating has a typical laminated structure. The nanostructured coating exhibited a bimodal microstructure consisting of fully melted regions and partially melted regions. The bonding strength and erosion wear resistance of the nanostructured coating were considerably better than those of the conventional one due to compact microstructure and nanoparticles of partially melted regions. Erosion failure analysis showed that the conventional coating was dominated by brittle erosion, whereas the nanostructured coating was dominated by brittle erosion as well as some ductile erosion.[Keywords: Plasma spraying, Nanostructured coatings, Al 2 O 3 -13 wt% TiO 2 , Solid particle erosion] Trans. Ind. Ceram. Soc., vol. 74, no. 2, pp. 90-96 (2015).

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“…Ceramic based hard coatings with thermal spray methods can be used effectively in the production of wear resistant coatings. Thermal power plants, aircraft and land type gas turbine engine parts, pumps, mixers, conveyors, coal gasification facilities and ore or coal slurry pipelines are the most frequently encountered industrial applications of erosive wear [1][2][3][4][5]. In this study, wear rate and mechanisms are investigated of different type oxide (A:Al2O3, Z:MgO-Zr2O3, S:Al2O3-MgO) based ceramic coatings sprayed onto 321 grade stainless steel surface.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Solid Particle Erosive Wear Rate At Room Temperature of Flexicord Flame Sprayed Different Oxide Coatings

Güzel¹,

Altuncu²,

Fi̇dan³

2018

Sakarya University Journal of Science

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Flame spray technology is basic member of the thermal spray coating family. Higher cost-effective coatings can be produced at higher speeds with new flame spray equipments which developed in recent years. The Flexicord flame spray method developed in this direction offers many advantages. A wide variety of ceramic coatings can be deposited on metallic surfaces with this spray methods in the face of wear-induced problems. In this study, solid particle erosion rates and wear behaviors of different oxide (Al2O3, MgOZr2O3, Al2O3-MgO based coatings have been studied comparatively with respect to ASTM G76 standard. Spinel based coatings between the oxide based coatings exhibited superior wear resistance and significantly lower mass loss than the others. Due to the fragile nature of the ceramic coatings, the erosive wear rate is increased by crack growth formation related with the porosity of coating. Due to the accelerated solid particle impacting at high impact angles, wear rate is highest.

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Solid particle erosion of thermal sprayed coatings

Cited by 91 publications

References 5 publications

Fast Regime Fluidized Bed Machining (FR-FBM) of Thermally Sprayed Coatings

Fast Regime Fluidized Bed Machining (FR-FBM) of Thermally Sprayed Coatings

Solid Particle Erosion Behaviour of Plasma-Sprayed Conventional and Nanostructured Al₂O₃-13 wt% TiO₂Ceramic Coatings

Comparison of Solid Particle Erosive Wear Rate At Room Temperature of Flexicord Flame Sprayed Different Oxide Coatings

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Solid particle erosion of thermal sprayed coatings

Cited by 91 publications

References 5 publications

Fast Regime Fluidized Bed Machining (FR-FBM) of Thermally Sprayed Coatings

Fast Regime Fluidized Bed Machining (FR-FBM) of Thermally Sprayed Coatings

Solid Particle Erosion Behaviour of Plasma-Sprayed Conventional and Nanostructured Al2O3-13 wt% TiO2Ceramic Coatings

Comparison of Solid Particle Erosive Wear Rate At Room Temperature of Flexicord Flame Sprayed Different Oxide Coatings

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Product

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Solid Particle Erosion Behaviour of Plasma-Sprayed Conventional and Nanostructured Al₂O₃-13 wt% TiO₂Ceramic Coatings