Influence of microstructure on the wear and corrosion behavior of detonation sprayed Cr2O3-Al2O3 and plasma sprayed Cr2O3 coatings

Babu, P. Suresh; Şen, Deniz; Jyothirmayi, A.; Krishna, L. Rama; Rao, D. Srinivasa

doi:10.1016/j.ceramint.2017.10.203

Cited by 66 publications

(21 citation statements)

References 12 publications

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“…Aluminum oxide (Al 2 O 3 ), titanium oxide (TiO 2 ) and chromium oxide (Cr 2 O 3 ) are widely used materials for tribological applications requiring both wear and corrosion resistance [164][165][166]. The oxide ceramics materials in general have shown high strength, hardness and good wear and corrosion resistance [167][168][169][170][171].…”

Section: Oxidesmentioning

confidence: 99%

“…The oxide ceramics materials in general have shown high strength, hardness and good wear and corrosion resistance [167][168][169][170][171]. APS has been the most commonly used thermal spray technology to deposit these materials due to their high melting temperature [164,165,167]. Numerous studies have been carried out to investigate the mechanical and wear resistant property of plasma sprayed ceramic oxides [164,[172][173][174][175][176][177][178][179][180][181][182][183][184].…”

Section: Oxidesmentioning

confidence: 99%

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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: Oxidesmentioning

confidence: 99%

Section: Oxidesmentioning

confidence: 99%

Coatings for Automotive Gray Cast Iron Brake Discs: A Review

Aranke

Algenaid

Awe³

et al. 2019

Coatings

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“…Bulk Cr 2 O 3 is one of the hardest oxides, with a hardness of 29.5 GPa [1][2][3][4], and can be deposited as a protective coating for many purposes, due to its high wear resistance, low coefficient of friction, and excellent corrosion resistance [5][6][7]. Many methods, including plasma-spray [8][9][10], sputtering [11,12], chemical vapor deposition (CVD) [13], and pulsed laser deposition [14], have been used to produce Cr 2 O 3 coatings. However, among them, only sputtering techniques have so far been successful in producing Cr 2 O 3 coatings with a hardness value close to that of bulk Cr 2 O 3 [3,12,15,16].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Deposition Parameters on the Structure and Mechanical Properties of Chromium Oxide Coatings Deposited by Reactive Magnetron Sputtering

Mohammadtaheri

Yang

et al. 2018

Coatings

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Appropriate conditions for depositing hard Cr 2 O 3 coatings by reactive sputtering techniques have yet to be defined. To fill this gap, the effect of principal deposition parameters, including deposition pressure, temperature, Cr-target voltage, and Ar/O 2 ratio, on both the structure and mechanical properties of chromium oxide coatings was investigated. A relationship between processing, structure, and the mechanical properties of chromium oxide coatings was established. Scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectroscopy, and X-ray Photoelectron Spectroscopy (XPS) were used to characterize the morphology, structure, and chemical compositions of the coatings that were prepared. An optical profilometer was employed to measure both the roughness and thickness of the coatings. The hardness and Young's modulus of the coatings both as-deposited and after annealing conditions were measured by nanoindentation. The results showed that depositing hard Cr 2 O 3 coatings is a highly critical task, requiring special deposition conditions. Cr 2 O 3 coatings with a high hardness of approximately 25 GPa could be achieved at room temperature, at a low pressure of 1.6 × 10 −1 Pa, where Cr-target voltage and oxygen content were 260 V and between 15-25 vol % of total gas, respectively. A dense stoichiometric Cr 2 O 3 structure was found to be responsible for the high chromium oxide coating hardness observed.

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“…This characteristic is caused by periodic friction force during the wear process. 24) From Fig. 4(c), few fracture, peeling and wear pits morphologies are found on the friction surface of C2.…”

Section: Methodsmentioning

confidence: 93%

Effects of Oxygen Fuel Rate on Microstructure and Wear Properties of Detonation Sprayed Iron-Based Amorphous Coatings

et al. 2018

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The Fe-based (iron-based) amorphous coatings were prepared by detonation spray at various oxygen fuel rates. The microstructure and wear properties were examined. The amorphous phase contents of coatings were calculated to be 89.73%, 86.23% and 81.46%, respectively, which were higher than those fabricated by other thermal spray techniques. The porosity was tested to be 2.1%, 1.4% and 0.8%, respectively. The wear resistance of Fe-based amorphous coatings was four times better than the stainless steel substrate. The oxygen fuel rate of 1.2 m 3 /h³1.0 m 3 /h was proved to be the optimal parameter of fabricating Fe-based amorphous coating. The effects of oxygen fuel rate were discussed.

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Influence of microstructure on the wear and corrosion behavior of detonation sprayed Cr2O3-Al2O3 and plasma sprayed Cr2O3 coatings

Cited by 66 publications

References 12 publications

Coatings for Automotive Gray Cast Iron Brake Discs: A Review

Coatings for Automotive Gray Cast Iron Brake Discs: A Review

The Effect of Deposition Parameters on the Structure and Mechanical Properties of Chromium Oxide Coatings Deposited by Reactive Magnetron Sputtering

Effects of Oxygen Fuel Rate on Microstructure and Wear Properties of Detonation Sprayed Iron-Based Amorphous Coatings

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