Hot corrosion behavior of solution precursor and atmospheric plasma sprayed thermal barrier coatings

Ajay, Amrendra K.; Raja, V.S.; Sivakumar, G.; Joshi, Shrikant V.

doi:10.1016/j.corsci.2015.05.034

Cited by 77 publications

(26 citation statements)

References 34 publications

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“…In other words, the coating was mainly detached by effect of molten salts, thermal stress and differential expansion between the ceramic coating and the bond coat. This depletation is similar to that found in the other work with similar conditions [7]. Figure 3(b) shows the SEM micrograph of a fractured section of YSZ coating after the hot corrosion test.…”

Section: Resultssupporting

confidence: 74%

“…Thus, salt can also react with the stabilizer of YSZ layer and cause the destruction and delamination of zirconia coating via thermal stress arising from the formation of rod-crystals and transformation of tetragonal to monoclinic zirconia. This behaviour is similar to that found by other researchers, especially in APS coatings [1,3,7]. In order to understand hot corrosion degradation mechanism of YSZ coatings under molten salts, it's essential to analyse the possible reactions that occur at high temperature.…”

Section: Resultsmentioning

confidence: 53%

“…In addition, previous works on TBCs elaborated by SPS have focused mainly on coating formation, thermal properties, thermal cycling, and isothermal oxidation [7]. 3, that SPS coating offers higher cycling durability that coatings elaborated by APS [7]. However, the hot corrosion behaviour of YSZ coatings elaborated by SPS has not yet been sufficiently studied.…”

Section: Introductionmentioning

confidence: 99%

“…However, plasma spraying technology has enjoyed widespread acceptance thanks to the high cost-effective deposition conditions and deposition efficiency [1,2]. The other hand, the typical gas turbine operating conditions use of low quality fuels containing impurities such as Na, V and S, which it can lead to premature degradation of TBCs by hot corrosion [7].…”

Section: Introductionmentioning

confidence: 99%

“…To achieve a desirable coating microstructure, injector properties and spray parameters must be accurately optimized in this SPS process [8]. In addition, previous works on TBCs elaborated by SPS have focused mainly on coating formation, thermal properties, thermal cycling, and isothermal oxidation [7]. 3, that SPS coating offers higher cycling durability that coatings elaborated by APS [7].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of hot corrosion of 8YSZ coatings elaborated by suspension plasma spraying

González-Hernández

Ageorges

López-Gómez

2017

J. Phys.: Conf. Ser.

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Section: Resultssupporting

confidence: 74%

Section: Resultsmentioning

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evaluation of hot corrosion of 8YSZ coatings elaborated by suspension plasma spraying

González-Hernández

Ageorges

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2017

J. Phys.: Conf. Ser.

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Effect of Rough‐Surfaced Diamond Content on the Microstructure, Tribological Behavior, and Corrosion Resistance of Ni/Diamond Composite Coatings

2023

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This study fabricates certain Ni/diamond composite coatings using a coelectrodeposition method and then evaluates the effect of diamond content on the morphology, phase structure, microhardness, wear, and corrosion resistance of such coatings, while exploring their tribological and anticorrosion mechanisms. It is demonstrated that the addition of diamond can change the preferred orientation of Ni from (200) to (111), and its texture coefficient value can be boosted from 23.3% to 64.4% with the increase of diamond content. In the experiment, at a diamond content of 3 g L−1, the deposited diamond particles are more and evenly dispersed across the composite, with the microhardness of nickel‐based coatings reaching an optimum value of 613 HV. In addition, the coefficient of friction is reduced to a minimum value of 0.627, while the wear rate is kept at only 1.79 × 10−5 mm3 Nm−1, indicating a high wear resistance. Electrochemical test results demonstrate that the Ni/diamond composite coatings produced at 3 g L−1 create the maximum charge transfer resistance (5429.3 Ω cm2) and the minimum corrosion current density (2.19 μA cm−2), features that can deliver the best corrosion resistance.

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New-Generation Ceramic Coatings for High-Temperature Applications by Liquid Feedstock Plasma Spraying

Joshi

Markocsan

Nylén

et al. 2020

Handbook of Advanced Ceramics and Composites

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Hot corrosion behavior of solution precursor and atmospheric plasma sprayed thermal barrier coatings

Cited by 77 publications

References 34 publications

Evaluation of hot corrosion of 8YSZ coatings elaborated by suspension plasma spraying

Evaluation of hot corrosion of 8YSZ coatings elaborated by suspension plasma spraying

Effect of Rough‐Surfaced Diamond Content on the Microstructure, Tribological Behavior, and Corrosion Resistance of Ni/Diamond Composite Coatings

New-Generation Ceramic Coatings for High-Temperature Applications by Liquid Feedstock Plasma Spraying

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