Microstructure and properties of YSZ-Al2O3 functional ceramic thermal barrier coatings for military applications

Ramesh, M.; Krishnaveni, M.; Karuppuswamy, P.; Rajeshkumar, L.

doi:10.1016/j.bsecv.2021.06.004

Cited by 30 publications

(5 citation statements)

References 25 publications

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“…Ceramic, Glass and Glass-Ceramic Applications as Protective Coatings 2.2.1. Ceramics Ramesh et al described a functionally graded ceramic coating, comprising yttriastabilised zirconia (YSZ) and Al 2 O 3 , which acted as a thermal barrier coating deposited on steel by an APS process [55]. Two distinct coating compositions were found depending on the carrier gas concentration, giving an improvement in insulation performance, wear and scratch resistance for the lower carrier gas flow.…”

Section: Methods Key Features Referencesmentioning

confidence: 99%

A Selective Review of Ceramic, Glass and Glass–Ceramic Protective Coatings: General Properties and Specific Characteristics for Solar Cell Applications

Rebekah,Catherine¹,

Gîrtan

2023

Materials

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A review on ceramics, glasses and glass–ceramics as thin film protective coatings for solar cells is given. The different preparation techniques and the physical and chemical properties are presented in a comparative way. This study is useful for technologies involving solar cells and solar panel cell development at the industrial scale, because protective coatings and encapsulation play a major role in increasing the lifetime of solar panels and environmental protection. The aim of this review article is to give a summary of existing ceramic, glass, and glass–ceramic protective coatings and how they apply to solar cell technology: silicon, organic or perovskite cells. Moreover, some of these ceramic, glass or glass–ceramic layers were found to have dual functionality, such as providing anti-reflectivity or scratch resistance to give a two-fold improvement to the lifetime and efficiency of the solar cell.

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Section: Methods Key Features Referencesmentioning

confidence: 99%

A Selective Review of Ceramic, Glass and Glass–Ceramic Protective Coatings: General Properties and Specific Characteristics for Solar Cell Applications

Rebekah,Catherine¹,

Gîrtan

2023

Materials

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“…The alumina coating was shown to reduce the COF value and wear mass loss of the GCI substrate by at least ten percent and fifty percent, respectively [4]. Wear and scratch tests revealed that EN 36C steel coated with 75: 25 YSZ-Al2O3 exhibits superior wear and scratch resistance when compared to the other materials [5]. A. Saravanakumar et al, [6] investigated the wear characteristics of aluminium alloy AA2219graphite (Gr) composites in dry sliding conditions.…”

Section: Introductionmentioning

confidence: 99%

Tribological Characteristics of GCI‐EN31 Steel Surface Contact with Dry Sliding Condition

Ananth¹,

Sivaprakasam

Prakash

et al. 2022

Journal of Nanomaterials

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Grey cast iron (GCI) and steel contact surface application is an inevitable component and provides good wear resistance in several applications, not only in automobiles. Grey cast iron consists of a predominantly pearlitic/ferrite matrix or both with graphite flakes. The majority of previous research works were based on three different types of wear regimes. The wear regimes enumerate the wear track morphology, wear rate, and COF of the respective application. In this research work, dry sliding wear properties of GCI and EN31 pins were examined with different sliding parameters using pin on disc wear test. The weight loss, coefficient of frictions, and surface morphology were considered for experimental analysis. Due to the transfer of wear debris from the GCI disc, the counter steel pin surface experienced a progressive reduction in wear with increasing speed and load. With 30 N and 45 N contact loads and sliding speeds up to 1 m/sec, the GCI shows marginally positive wear. The surface textures were analyzed with the help of SEM and a surface roughness tester.

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“…Electrochemical oxidation of materials has been extensively studied and applied for decades, with many established technologies like anodization and plasma electrolytic oxidation (PEO). PEO has been under extensive research for over 40 years [1][2][3] and is of particular interest for applications that require a thick [4], hard [5], thermally [6] and chemically resilient [7] coating. PEO uses large voltages and high current densities to produce plasma discharges through the oxide layer, thus enabling synthesis of the hardest and most stable phases, e.g., an alpha phase of alumina [8].…”

Section: Introductionmentioning

confidence: 99%

Chromium Luminescence in Plasma Electrolytic Oxidation Coatings on Aluminum Surface

et al. 2022

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With plasma electrolytic oxidation (PEO), one can easily obtain thick (tens of microns), mechanically resilient and chemically stable oxide coating on aluminum and other valve metal alloys. The study of luminescent PEO coatings is a relatively new subfield of the already well-established coating preparation methods. In recent years, many new luminescence-based approaches have been developed, one of which is the detection of ionizing radiation of carbon-doped PEO alumina coating. This study presents an improved approach by doping the alumina coating with chromium using citric acid as an additive in the electrolyte. Trivalent chromium ions replacing aluminum in the crystalline lattice of the coating exhibit characteristic sharp lines in the luminescence spectrum. The effectiveness of different DC voltages, process times and citric acid concentrations in electrolyte were examined. The use of citric acid in the electrolyte also provides the conditions required for the formation of an energy trap in the bandgap of the material, thus opening up the possibility for the coating to be used as an ionizing radiation detector by measuring its thermoluminescence. Chromium atoms are incorporated in the coating from the Al6082 aluminum alloy itself and are not added in the electrolyte, therefore making the process much more reliable, repeatable, and environmentally friendly.

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Microstructure and properties of YSZ-Al2O3 functional ceramic thermal barrier coatings for military applications

Cited by 30 publications

References 25 publications

A Selective Review of Ceramic, Glass and Glass–Ceramic Protective Coatings: General Properties and Specific Characteristics for Solar Cell Applications

A Selective Review of Ceramic, Glass and Glass–Ceramic Protective Coatings: General Properties and Specific Characteristics for Solar Cell Applications

Tribological Characteristics of GCI‐EN31 Steel Surface Contact with Dry Sliding Condition

Chromium Luminescence in Plasma Electrolytic Oxidation Coatings on Aluminum Surface

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