Effect of TiO 2 addition on the microstructure and nanomechanical properties of Al 2 O 3 Suspension Plasma Sprayed coatings

Bannier, É.; Vicent, M.; Rayón, E.; Benavente, Rut; Salvador, M. D.; Sánchez, E.

doi:10.1016/j.apsusc.2014.07.168

Cited by 35 publications

(15 citation statements)

References 49 publications

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“…From the review of literature carried out, thermal spray variants bear promises to be applied on GCI brake discs and, in the near future, also keep pace with the regulatory demands that are certain However, the research on SPS wear resistance coating is still incipient and very few works have been conducted [154][155][156][157][158]. Early results by Tingaud et al [154] showed an improvement in the wear resistance of SPS Al 2 O 3 as well as low CoF (~0.39) by adding ZrO 2 in the matrix.…”

Section: Suspension Plasma Spray (Sps)mentioning

confidence: 99%

Coatings for Automotive Gray Cast Iron Brake Discs: A Review

Aranke

Algenaid

Awe³

et al. 2019

Coatings

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Gray cast iron (GCI) is a popular automotive brake disc material by virtue of its high melting point as well as excellent heat storage and damping capability. GCI is also attractive because of its good castability and machinability, combined with its cost-effectiveness. Although several lightweight alloys have been explored as alternatives in an attempt to achieve weight reduction, their widespread use has been limited by low melting point and high inherent costs. Therefore, GCI is still the preferred material for brake discs due to its robust performance. However, poor corrosion resistance and excessive wear of brake disc material during service continue to be areas of concern, with the latter leading to brake emissions in the form of dust and particulate matter that have adverse effects on human health. With the exhaust emission norms becoming increasingly stringent, it is important to address the problem of brake disc wear without compromising the braking performance of the material. Surface treatment of GCI brake discs in the form of a suitable coating represents a promising solution to this problem. This paper reviews the different coating technologies and materials that have been traditionally used and examines the prospects of some emergent thermal spray technologies, along with the industrial implications of adopting them for brake disc applications.

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Section: Suspension Plasma Spray (Sps)mentioning

confidence: 99%

Coatings for Automotive Gray Cast Iron Brake Discs: A Review

Aranke

Algenaid

Awe³

et al. 2019

Coatings

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“…Besides, a filter with a mesh of 75 µm was placed before the injector to avoid clogging by agglomerates. This system has been set out in previous research [25,32]. AISI 304 stainless steel disks, with a diameter of 25 mm and 10 mm of thickness, were employed as substrates.…”

Section: Coating Preparation and Characterizationmentioning

confidence: 99%

“…Therefore, the great challenge of this first part of the research addresses the preparation and stabilisation of multicomponent aqueous suspensions of submicronic particles of Y-TZP/Al2O3/SiC (referred as SAZ). The literature on the preparation and stabilisation of each of these oxides or their combinations is abundant [22,[24][25][26][27]. There is also previous research on the preparation of highly concentrated, aqueous suspensions of SiC submicronic particles [28,29].…”

Section: Introductionmentioning

confidence: 99%

Aqueous suspension processing of multicomponent submicronic Y-TZP/Al 2 O 3 /SiC particles for suspension plasma spraying

Carnicer

Alcázar

Sánchez

et al. 2018

Journal of the European Ceramic Society

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In order to obtain thermal barrier coatings by Suspension Plasma Spraying (SPS) process with potential new self-healing ability multicomponent submicronic Y-TZP/Al2O3/SiC suspensions were prepared. For this purpose, concentrated aqueous suspensions of individual components as well as the multicomponent mixture were studied and characterised in terms of colloidal stability and rheological behaviour to determine the best conditions for processing and preparation of the coatings. In the study, different dispersant contents and sonication times were tested. Subsequently, low concentrated suspensions were prepared to obtain preliminary thermal barrier coatings with the optimised feedstock. Thus, ceramic coatings were deposited by SPS and then characterised in order to assess the microstructure and phase distribution, in particular, the degree of preservation of the sealing agent, SiC, in the final coating as a previous indicator of its self-healing ability.

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“…Additionally, these coatings can be of significant interest for oil, gas, transmission and marine industries-which face corrosion problems. Due to the combination of wear-, oxidationand aggressive environments-resistance, the application of such coatings could protect parts working under severe conditions [11,[20][21][22][23][24]. Although papers report promising results regarding application of APS titaniaalumina based coatings for improvement of cavitation erosion resistance (CER) [18,25], it seems that influence of spray parameters has not been completely investigated.…”

Section: Introductionmentioning

confidence: 99%

Impact of Atmospheric Plasma Spray Parameters on Cavitation Erosion Resistance of Al₂O₃-13% TiO₂ Coatings

et al. 2019

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In this paper the results of cavitation erosion test of ceramic coatings are presented. The Al2O3-13% TiO2 coatings were manufactured by powder atmospheric plasma spraying. The plasma spray experimental parameters included two variables: (i) spray distance varying from 80 to 100 mm and (ii) torch linear speed varying from 300 to 500 mm/s.The as sprayed surface roughness was measured. The coatings structure was investigated using SEM. Porosity was investigated according to the ASTM E2109-01 Standard procedure. Additional microhardness measurements were conducted. The cavitation tests were carried out on vibratory test rig according to the ASTM G-32 standard regarding to the stainless steel (grade 304) reference sample. The cavitational worn areas were examined using SEM microscopy and roughness measurements. The influence of coatings microstructure and microhardness on the cavitation erosion resistance was investigated. The coatings microstructure was strongly dependent on spray distance as well as torch linear velocity. Decrease of the hardness was a result of less compact structure and lower degree of well molten particle. On the contrary, the best cavitation erosion resistance was characteristic for coatings which have quite good and compact structure but on the other hand the heat flux was lower. Higher heat flux caused thermal stresses, which were visible as cracks in the structure. Moreover, the type of the structure was important because from the point of view of the cavitation erosion resistance, lamellar architecture is more preferred than the columnar one. Finally, the structure type was linked to the process parameters.

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Effect of TiO 2 addition on the microstructure and nanomechanical properties of Al 2 O 3 Suspension Plasma Sprayed coatings

Cited by 35 publications

References 49 publications

Coatings for Automotive Gray Cast Iron Brake Discs: A Review

Coatings for Automotive Gray Cast Iron Brake Discs: A Review

Aqueous suspension processing of multicomponent submicronic Y-TZP/Al 2 O 3 /SiC particles for suspension plasma spraying

Impact of Atmospheric Plasma Spray Parameters on Cavitation Erosion Resistance of Al₂O₃-13% TiO₂ Coatings

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Effect of TiO 2 addition on the microstructure and nanomechanical properties of Al 2 O 3 Suspension Plasma Sprayed coatings

Cited by 35 publications

References 49 publications

Coatings for Automotive Gray Cast Iron Brake Discs: A Review

Coatings for Automotive Gray Cast Iron Brake Discs: A Review

Aqueous suspension processing of multicomponent submicronic Y-TZP/Al 2 O 3 /SiC particles for suspension plasma spraying

Impact of Atmospheric Plasma Spray Parameters on Cavitation Erosion Resistance of Al2O3-13% TiO2 Coatings

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Impact of Atmospheric Plasma Spray Parameters on Cavitation Erosion Resistance of Al₂O₃-13% TiO₂ Coatings