Corrosion kinetics of Al2O3+ZrO2·5CaO coatings applied on gray cast iron substrate

Abhinav, .; Krishnamurthy, N.; Jain, Ranjana

doi:10.1016/j.ceramint.2017.08.131

Cited by 12 publications

(7 citation statements)

References 8 publications

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“…hardness, resistance to corrosion, and resistance to abrasive wear. In our previous published work [15], present composite combination shows good resistance towards corrosion as the coating thickness increases. In the present paper, attempts were made to investigate the wear characteristics of the above-mentioned composition for the tribological applications.…”

Section: Introductionsupporting

confidence: 50%

Wear Studies of Al2O3-ZrO2∙5CaO Composite Coatings for Tribological Applications

Abhinav¹,

Krishnamurthy²,

Jain³

2018

IJET

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A composite mixture of Metco 105 SFP, 99.9% Al2O3 and Metco 201 NS, ZrO2.5CaO were blended in the pursuit of high hardness and improved wear resistance characteristics for tribological applications. In this context a composite mixture of alumina and calcia stabilized zirconia in 50:50 by wt. % proportion was developed, and applied over Al-6061 substrates. Atmospheric plasma spray coating technique was used to develop the coating systems. The ASTM G132 standard, a pin-on-disk tribometer was used to determine the specific wear rate at different normal loads of 5 N, 10 N and 15 N. Experimental results revealed that the top coat primarily subjected to sliding and localized abrasion and also confirmed with SEM micrograph. Sliding has mainly occurs in the plane of <111>, <200>, <220>, <311>, <222> found in the XRD analysis. Irrespective of the applied normal loads the coefficient of friction doesn’t influences much in the abrasive wear studies. However, wear mechanism was found to primarily dependent on the phases and on the crystallographic structure of the material used.

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Section: Introductionsupporting

confidence: 50%

Wear Studies of Al2O3-ZrO2∙5CaO Composite Coatings for Tribological Applications

Abhinav¹,

Krishnamurthy²,

Jain³

2018

IJET

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“…A promising strategy to refurbish the replaced GCI rotor, in contrast to the remelting approach, is to deposit a cermet coating (carbide, boride, or oxide hard metal in a metal binder) on the worn surfaces of the rotor. Different coating technologies have been attempted for this purpose, such as laser cladding (LC) [2,3], atmospheric plasma spray [4], and high-velocity oxygen fuel (HVOF) spray [5][6][7][8][9]. These techniques may avoid the remelting process as well as high energy consumption and carbon footprint, at the same time increase the wear resistance of the refurbished brake rotors.…”

Section: Introductionmentioning

confidence: 99%

Characterization of ultrafine particles from hardfacing coated brake rotors

et al. 2022

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Automotive brake rotors are commonly made from gray cast iron (GCI). During usage, brake rotors are gradually worn off and periodically replaced. Currently, replaced brake rotors are mostly remelted to produce brand-new cast iron products, resulting in a relatively high energy consumption and carbon footprint into the environment. In addition, automotive brakes emit airborne particles. Some of the emitted particles are categorized as ultrafine, which are sized below 100 nm, leading to a series of health and environmental impacts. In this study, two surface treatment techniques are applied, i.e., high-velocity oxygen fuel (HVOF) and laser cladding (LC), to overlay wear-resistant coatings on conventional GCI brake rotors in order to refurbish the replaced GCI brake rotor and to avoid the remelting procedure. The two coating materials are evaluated in terms of their coefficient of friction (CoF), wear, and ultrafine particle emissions, by comparing them with a typical GCI brake rotor. The results show that the CoF of the HVOF disc is higher than those of the GCI and LC discs. Meanwhile, HVOF disc has the lowest wear rate but results in the highest wear rate on the mating brake pad material. The LC disc yields a similar wear rate as the GCI disc. The ultrafine particles from the GCI and LC discs appeared primarily in round, chunky, and flake shapes. The HVOF disc emits unique needle-shaped particles. In the ultrafine particle range, the GCI and HVOF discs generate particles that are primarily below 100 nm in the running-in period and 200 nm in the steady state. Meanwhile, the LC disc emitted particles that are primarily ∼200 nm in the entire test run.

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“…Over the previous three decades, many scientific and technical barriers to historically used ceramics have been removed. Various substances such as Y2O3, ZrO2, and Al2O3 are combined with distinctive stabilizers such as BeO, SiC, AlN, Si3N4, WC, etc., or MnO, CaO used in engineering networks [1,2,3,4,5]. Despite the nature of the ceramic material, it has been efficaciously used in the oil and fuel enterprise as nicely as for airspace components, variety of reducing tools, solid fuel cells, combustion engines, etc.…”

Section: Introductionmentioning

confidence: 99%

“…Due to its uncommon negativity against oxidation, excessive put-on resistance and excessive thermal stability Compared to monolithic minerals. The pure porcelain cloth does not exhibit any promising effects due to its fragile homes and limited duration [1,2,3,4,5]. However, preceding studies have proven very few outcomes while mixing easy ceramics with metallic powder can be viewed as positive.…”

Section: Introductionmentioning

confidence: 99%

“…However, preceding studies have proven very few outcomes while mixing easy ceramics with metallic powder can be viewed as positive. This formula is referred to as cermet [5]. To achieve a high-quality benefit and due to the fact of the mechanical thermal advantages, researchers must locate a high-quality formulation that can be utilized at high temperatures (>a thousand °C).…”

Section: Introductionmentioning

confidence: 99%

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TRIBOLOGICAL PROPERTIES OF AL2O3-ZrO2 COMPOSITE COATING BY LUBRICATION

Al-Samarai

Haftirman

2021

Sinergi

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Tribological investigations had been carried out on the plasma coating (Al2O3+ ZrO2) below dry and moist abrasion stipulations according to ASTM G134. Commercial motor oil 20W40 was used as a lubricant. At a rotational speed of 200 rpm, all experiments were carried out with ordinary loads of 10, 15 and 20 Nm. Electron microscopy for scanning and AFM was used to study of the layer sprayed with paint. The outcomes of the SEM and AFM evaluation confirmed that abrasive wear is normally decided by abrasive wear in dry abrasive conditions. The lubrication and moisture check confirmed a major reduce in wear from 10 to 15 N below regular loading, and a corrosion fee larger than 15 N was once discovered below regular loading. No impact of lubrication on wear used to discovered at high loading. No impact of lubrication on wear used to be discovered at high loads. It was also cited that the plasma coating manner to improve wear resistance. The experimental statistics acquired in this study are tremendous engineering functions such as reducing equipment and internal combustion engines.

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Corrosion kinetics of Al2O3+ZrO2·5CaO coatings applied on gray cast iron substrate

Cited by 12 publications

References 8 publications

Wear Studies of Al2O3-ZrO2∙5CaO Composite Coatings for Tribological Applications

Wear Studies of Al2O3-ZrO2∙5CaO Composite Coatings for Tribological Applications

Characterization of ultrafine particles from hardfacing coated brake rotors

TRIBOLOGICAL PROPERTIES OF AL2O3-ZrO2 COMPOSITE COATING BY LUBRICATION

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