Structure stabilization by zirconia pinning effect of Y 2 Si 2 O 7 environmental barrier coatings synthesized by solution precursor plasma spraying process

Darthout, Émilien; Gitzhofer, F.

doi:10.1016/j.surfcoat.2016.10.015

Cited by 13 publications

(4 citation statements)

References 36 publications

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“…One of the most significant advantages of ICTP is its ability to generate a clean, high-temperature environment free from contamination by electrode materials. Capitalizing on these benefits, ICTPs have found diverse applications, including waste disposal [28], thermal barrier coating production [29][30][31], plasma spray-physical vapor deposition technique [32], diamond film deposition [33,34], fullerene synthesis [35,36], fine powder spheroidization [37][38][39], nanopowder synthesis [40][41][42][43], nanotube production [44,45], catalyst synthesis [46], and astrophysical research [47]. Despite the successful utilization of ICTP torches in numerous material processes, certain limitations have also emerged.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Essential Features and Optimal Operational Parameters of an RF-ICP Torch for Waste Treatment Applications

Aldeeb,

Abu Darda,

Damideh

et al. 2024

Recycling

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Recently, plasma-based pyrolysis has gained increasing prominence as a technology in response to the growing challenges in waste disposal and the recognition of opportunities to generate valuable by-products. The efficiency of the pyrolysis process is intricately tied to the characteristics of the plasma involved, particularly the effective electron temperature (Teff) and plasma density (ne). This study aimed to conduct a comprehensive examination of the essential features and optimal operational parameters of a developed RF-ICP torch specifically designed for small-scale municipal solid waste (MSW) pyrolysis (mixture of paper and polypropylene) with the goal of controlling both the torch and the overall process. Using optical emission spectroscopy (OES), we measured plasma parameters, specifically (Teff) and (ne), while varying argon gas flow rates and RF powers. The (Teff) and (ne)were determined using the Boltzmann plot and Stark broadening, respectively. The RF torch was found to generate (ne) up to approximately 2.8×1020 cm−3 and (Teff) up to around 8200 K, with both parameters being controlled by the discharge power and gas flow rate. Additionally, a power-losing mechanism, namely the anomalous skin effect, was detected during the study, which is uncommon in atmospheric plasma discharge.

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Section: Introductionmentioning

confidence: 99%

Analysis of Essential Features and Optimal Operational Parameters of an RF-ICP Torch for Waste Treatment Applications

Aldeeb,

Abu Darda,

Damideh

et al. 2024

Recycling

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“…Rare-earth silicates, especially yttrium silicate (YS), are popular candidates for thermal protection coatings. 18,19 Based on the binary diagrams between silica and yttria, there are three types of YS, namely yttrium monosilicate Y 2 SiO 5 (YMS), yttrium disilicate Y 2 Si 2 O 7 (YDS) and yttrium apatite Y 4 Si 3 O 12.…”

Section: Introductionmentioning

confidence: 99%

Preparation and ablation resistance of carbon fiber with yttrium silicate coating

Wang,

Huang,

Yao

et al. 2023

Int J Applied Ceramic Tech

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In order to solve the shortcoming of fiber oxidation in a high‐temperature environment and improve the antiablative performance, yttrium silicate is coated on the carbon fibers’ surface by the sol‐gel process. In the present work, investigations of the ablation resistance of carbon fiber composites with yttrium silicate coatings (YS‐CFs) prepared by different sol contents and sintering temperatures are reported. The results show that YS‐CFs exhibit excellent ablation resistance in the oxyacetylene test with a heat flow of 1.5 MW/m2. The surface coating of carbon fiber is composed of a mixture of cristobalite, yttrium monosilicate, and yttrium disilicate. The best ceramic coating could be obtained by dipping 20% silica sol and 14% yttrium sol in turn and sintering at 1300°C. In this case, the linear and mass ablation rates reach the minimum values of .667 μm/s and 2.975 mg/s, respectively. YS‐CFs could be used as reinforcements for thermal protection materials in high‐temperature environments.

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“…One of the most significant advantages of ICTP is its ability to generate a clean, high-temperature environment free from contamination by electrode materials. Capitalizing on these benefits, ICTPs have found diverse applications, including waste disposal [24], thermal barrier coating production [25][26][27], diamond film deposition [28], fullerene synthesis [29,30], fine powder spheroidization [31][32][33], nanopowder synthesis [34][35][36][37], nanotube production [38,39], catalyst synthesis [40], and astrophysical research 3 [41]. Despite the successful utilization of ICTP torches in numerous material processes, certain limitations have also emerged.…”

Section: Introductionmentioning

confidence: 99%

Efficient Waste Management via Tuning Plasma Properties in Radio Frequency Inductively Coupled Plasma

A. Aldeeb,

Abu Darda,

Damideh

et al. 2023

Preprint

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In the last ten years, plasma waste treatment has gained increasing prominence as a technology in response to growing challenges in waste disposal and the recognition of opportunities for generating valuable by-products. The efficiency and outcomes of this process are intricately linked to the characteristics of the plasma involved, such as plasma enthalpy and heat flux. We employed an experimental radio frequency inductively coupled plasma (RF-ICP) torch operating at atmospheric pressure to generate plasma. Utilizing optical emission spectroscopy (OES), we measured plasma parameters, specifically the effective electron temperature (Teff) and plasma density (ne), while varying argon gas flow rates and RF powers. Our investigations revealed that both flow rate and RF power exert significant control over plasma parameters, and we observed an unusual phenomenon within this range of discharge pressures. Consequently, both the plasma's enthalpy and the heat flux it generates are influenced by variations in both flow rate and RF power.

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Structure stabilization by zirconia pinning effect of Y 2 Si 2 O 7 environmental barrier coatings synthesized by solution precursor plasma spraying process

Cited by 13 publications

References 36 publications

Analysis of Essential Features and Optimal Operational Parameters of an RF-ICP Torch for Waste Treatment Applications

Analysis of Essential Features and Optimal Operational Parameters of an RF-ICP Torch for Waste Treatment Applications

Preparation and ablation resistance of carbon fiber with yttrium silicate coating

Efficient Waste Management via Tuning Plasma Properties in Radio Frequency Inductively Coupled Plasma

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