Effect of Y2O3 addition on tribological properties of plasma sprayed Al2O3-13% TiO2 coating

Mehar, Sanket; Sapate, S. G.; Vashishtha, Nitesh; Bagde, Pranay

doi:10.1016/j.ceramint.2020.01.214

Cited by 29 publications

(14 citation statements)

References 39 publications

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“…The worn surface was uneven, which indicated that parts of the coating were pulled out during the test. The predominant mechanism of wear was adhesive wear, which is consistent with the observations of other authors [27,28]. Wear resistance of coatings was related both to their basic mechanical properties such as microhardness and fracture toughness, as well as with the microstructure, adhesion and porosity of the coatings [29,30].…”

Section: Resultssupporting

confidence: 90%

Mechanical properties investigations of the plasma sprayed coatings based on alumina powder

Spyra¹,

Michalak²,

Niemiec³

et al. 2020

Weld. Tech. Rev.

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In this paper Al2O3 + 13 wt% TiO2 ceramic coatings manufactured by Atmospheric Plasma Spraying (APS) have been investigated. The commercial feedstock materials, Metco 6221 (top coat) and Amdry 4535 (bond coat) have been deposited on stainless steel coupons. The main goal of researches was to determine the influence of critical plasma spray parameters (CPSP) on structure and properties of the coatings. In present studies, the electrical power was a variable parameter. Coatings have been characterized by in the terms of microstructure, topography, bond strength adhesion, fracture toughness and wear resistance. As a result, it was observed, that coatings sprayed with higher value of the electrical power exhibit higher mechanical properties due to better cohesion as well as higher melting degree.

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Section: Resultssupporting

confidence: 90%

Mechanical properties investigations of the plasma sprayed coatings based on alumina powder

Spyra¹,

Michalak²,

Niemiec³

et al. 2020

Weld. Tech. Rev.

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“…The sliding wear rate of pure alumina coating was 2.6 times higher than Al 2 O 3 -40TiO 2 coating under similar test conditions [13]. The addition of Y 2 O 3 was found to be effective in decreasing friction and wear rate of Al 2 O 3 -TiO 2 coating because of the stabilization of alpha (α) phase and tribofilm formation of lower oxides of titanium [14].…”

Section: Introductionmentioning

confidence: 84%

Friction energy map for sliding wear of Al₂O₃-TiO₂ and Cr₂O₃-TiO₂ coatings

Mehar¹,

Sapate²,

Vashishtha³

et al. 2021

Surf. Topogr.: Metrol. Prop.

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The present study deals with the development of friction energy map for plasma sprayed Al2O3-TiO2 and Cr2O3-TiO2 coatings. Al2O3-TiO2 and Cr2O3-TiO2 coatings were deposited by atmospheric plasma spray technique. The structural and mechanical properties of coatings were studied using Scanning Electron Microscopy (SEM), x-ray Diffraction (XRD) and Vickers macro and micro hardness test. Sliding wear tests were performed on coated specimens over a range of sliding speed and load using pin on disc test apparatus. The analysis of worn surface and wear debris was carried by SEM, XRD and Raman Spectroscopy. Cr2O3-TiO2 coating showed higher hardness and elastic modulus and relatively lower fracture toughness than Al2O3-TiO2 coating. Al2O3-TiO2 coatings exhibited 1.8 times better wear resistance and 11%–30% lower friction coefficient, as compared to Cr2O3-TiO2 coating, depending upon the wear test conditions. The reduction in friction coefficient and wear rate at higher sliding speed was due to the formation of tribofilms on worn surface. A good correlation was observed between friction energy and contact severity; which incorporates mechanical properties of coatings. Friction energy map was used to rationalize wear rates of Al2O3-TiO2 and Cr2O3-TiO2 coatings, for the identification of various wear regimes and failure modes of the coating.

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“…23 Y 2 O 3 nanoparticles are spherical solid particles utilized especially for engineering applications in aerospace structures in fuel cells, particularly. 24 Mehar et al 25 analyzed the effect of Y 2 O 3 on tribological properties of Al 2 O 3 and 13% TiO 2 coatings and reported that up to 20 wt.% of Y 2 O 3 addition had greatly improved densification as well as alpha-alumina stabilization that lead toward better tribological properties of hybrid structures. Although TiC and Al 2 O 3 as individual nano level reinforcements were effective in the wear resistance, incorporating the hybrid nano-sized reinforcements (TiC + Al 2 O 3 ) in the AA6061 matrix improved it even further.…”

Section: Introductionmentioning

confidence: 99%

“…Y 2 O 3 nanoparticles are spherical solid particles utilized especially for engineering applications in aerospace structures in fuel cells, particularly 24 . Mehar et al 25 . analyzed the effect of Y 2 O 3 on tribological properties of Al 2 O 3 and 13% TiO 2 coatings and reported that up to 20 wt.% of Y 2 O 3 addition had greatly improved densification as well as alpha‐alumina stabilization that lead toward better tribological properties of hybrid structures.…”

Section: Introductionmentioning

confidence: 99%

Dry sliding wear analysis of vacuum die‐casted hybrid aluminum nanocomposites using the DOE Taguchi method

Singh

Goyal

Bhandari³

2022

Int J Applied Ceramic Tech

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This study focuses on the impact of wear process parameters on the sliding wear behavior of titanium oxide (TiO 2 ) and yttrium oxide (Y 2 O 3 ) reinforced pure aluminum (Al) hybrid nanocomposites. The optimization of wear test parameters for hybrid aluminum matrix nanocomposites (HAMNCs) was examined with the design of experiments Taguchi method. The HAMNCs were manufactured by a vacuum die casting technique using a unique double-layer feeding method. Initially, mechanical characterization as tensile and hardness of HAMNC samples was performed to identify the optimum reinforcement. The nanocomposites at 5-wt.% TiO 2 + 5-wt.% Y 2 O 3 (HAMNC1) showed excellent tensile strength and microhardness of 127.6 MPa and 75.43 BHN, respectively, than the other configurations of HAMNCs. The three levels of machine process parameters as load at 5, 10, 15 N, sliding velocity at .5, 1, 1.5 m/s and sliding distance at 200, 400, and 600 m are selected to identify optimum process parameters of HAMNC1 that possess ultimate wear properties. The results derived from optimization were further predicted using ANOVA and regression equations for individual influences. The improved grain size observed in the wear surface morphology of HAMNC1 was performed using field emission scanning electron microscopy.

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Effect of Y2O3 addition on tribological properties of plasma sprayed Al2O3-13% TiO2 coating

Cited by 29 publications

References 39 publications

Mechanical properties investigations of the plasma sprayed coatings based on alumina powder

Mechanical properties investigations of the plasma sprayed coatings based on alumina powder

Friction energy map for sliding wear of Al₂O₃-TiO₂ and Cr₂O₃-TiO₂ coatings

Dry sliding wear analysis of vacuum die‐casted hybrid aluminum nanocomposites using the DOE Taguchi method

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Effect of Y2O3 addition on tribological properties of plasma sprayed Al2O3-13% TiO2 coating

Cited by 29 publications

References 39 publications

Mechanical properties investigations of the plasma sprayed coatings based on alumina powder

Mechanical properties investigations of the plasma sprayed coatings based on alumina powder

Friction energy map for sliding wear of Al2O3-TiO2 and Cr2O3-TiO2 coatings

Dry sliding wear analysis of vacuum die‐casted hybrid aluminum nanocomposites using the DOE Taguchi method

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Friction energy map for sliding wear of Al₂O₃-TiO₂ and Cr₂O₃-TiO₂ coatings