Effect of the core-shell structure powders on the microstructure and thermal conduction property of YSZ/Cu composite coatings

Li, Qingkui; Zhang, Nan; Gao, Yinjun; Qing, Yubin; Zhu, Yameng; Yang, Kun; Zhu, Jinpeng; Wang, Hailong; Ma, Zhuang; Gao, Lihong; Liu, Yanbo; He, Jilin

doi:10.1016/j.surfcoat.2021.127658

Cited by 10 publications

(4 citation statements)

References 42 publications

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“…Actually, through the Hall flow meter analysis, it is found that the original HE-RE 3 Al 5 O 12 powders have no flowability, while that of the HE-RE 3 Al 5 O 12 powders after granulation could be up to 70 s/50 g. This is because when the morphology of HE-RE 3 Al 5 O 12 powders changes from an irregular shape to a spherical shape, the flowability of the HE-RE 3 Al 5 O 12 is significantly improved. In addition, after spray-drying, the apparent density of the HE-RE 3 Al 5 O 12 powders increases from 0.85 to 1.18 g/cm 3 , and the BET surface area decreases from 2.32 to 2.17 m 2 /g. Based on the above analysis, the HE-RE 3 Al 5 O 12 powders after granulation exhibit good thermal spraying adaptability.…”

Section: Morphology and Flowability Of Micron-agglomerate Spray Powdersmentioning

confidence: 99%

“…In summary, we successfully prepared a novel highentropy rare-earth aluminate HE-RE3 Al 5 O 12 coating with good thermal protection performance at high temperatures. Single-phase HE-RE 3 Al 5 O 12 powders were prepared by spray granulation to obtain nearly spherical granulation powders, which significantly improved the flowability of the powders in order to meet the requirements of APS.…”

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confidence: 99%

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Air plasma-sprayed high-entropy (Y0.2Yb0.2Lu0.2Eu0.2Er0.2)3Al5O12 coating with high thermal protection performance

et al. 2022

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High-entropy rare-earth aluminate (Y0.2Yb0.2Lu0.2Eu0.2Er0.2)3Al5O12 (HE-RE3Al5O12) has been considered as a promising thermal protection coating (TPC) material based on its low thermal conductivity and close thermal expansion coefficient to that of Al2O3. However, such a coating has not been experimentally prepared, and its thermal protection performance has not been evaluated. To prove the feasibility of utilizing HE-RE3Al5O12 as a TPC, HE-RE3Al5O12 coating was deposited on a nickelbased superalloy for the first time using the atmospheric plasma spraying technique. The stability, surface, and cross-sectional morphologies, as well as the fracture surface of the HE-RE3Al5O12 coating were investigated, and the thermal shock resistance was evaluated using the oxyacetylene flame test. The results show that the HE-RE3Al5O12 coating can remain intact after 50 cycles at 1200 °C for 200 s, while the edge peeling phenomenon occurs after 10 cycles at 1400 °C for 200 s. This study clearly demonstrates that HE-RE3Al5O12 coating is effective for protecting the nickel-based superalloy, and the atmospheric plasma spraying is a suitable method for preparing this kind of coatings.

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Section: Morphology and Flowability Of Micron-agglomerate Spray Powdersmentioning

confidence: 99%

mentioning

confidence: 99%

Air plasma-sprayed high-entropy (Y0.2Yb0.2Lu0.2Eu0.2Er0.2)3Al5O12 coating with high thermal protection performance

et al. 2022

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“…Компьютерное моделирование широко востребовано для изучения функциональных покрытий из высокоэнтропийных сплавов, например GdTbDyHoSc и GdTbDyHoY [11]. Для моделирования процессов нанесения покрытий в работах [12][13][14] использованы программные пакеты ANSYS, SolidWorks и JmarPro. Для моделирования процессов получения порошков плазменным методом применяют ANSYS [15], FLOW-3D [16] и COMSOL [17].…”

Section: введение введениеunclassified

Trajectories of titanium powder particles of diffferent size in a plasma flow

Okulov,

Akhmetshin,

Gelchinsky

et al. 2023

Izv. VUZ. Poroshk. Met.

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The study focused on analyzing the trajectories of powder particles within a plasma flow, a process utilized for applying functional coatings and producing powders. An overview of contemporary scientific research dedicated to modeling these processes is presented. The primary objective of this study was to ascertain how the particle size of the powder, used as a raw material, influences the path of particles within a vertically directed plasma flow. We examined three sizes of titanium powder: 1 μm, 50 μm and 100 μm. These sizes were chosen based on production practices for the considered processes and the particle size distribution of the powder material used in full-scale experiments, employing specialized CAMSIZER-XT equipment. Our study reveals the significant impact of powder particle size on various parameters, including the opening angle, length, and width of the illuminated section of the plasma torch, as well as the distance traveled by particles entrained by the plasma flow from the plasma head. To investigate these effects, we conducted computer simulations, followed by validation through full-scale experiments for each case. Specifically, we employed the MAK-10 laboratory plasma facility at the Institute of Metallurgy, Ural Branch, Russian Academy of Sciences, which is designed for powder production and functional coatings. In order to ensure the reliability of our measurements, we performed statistical data processing of the full-scale experiment results using scatter plots and determination of their average values. The comparative analysis of results from both natural and computer experiments demonstrated a satisfactory level of convergence. This comparative analysis of three particle sizes of powder enabled us to formulate practical recommendations for enhancing equipment and process technology in the context of the considered procedures. Furthermore, our article introduces a computer model capable of predicting the dimensions of the reactor (the chamber for receiving powder materials), the optimal shape of components within the plasma facility, and the positioning of the substrate on which functional coatings are applied. This model can be applied to address similar problems within the scope of this study, facilitating the control of coating application processes and powder production.

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“…Therefore, during recent twenty years, a wide variety of solid lubricating films were produced and design by combining the intrinsic properties of some binary and ternary films which are very hard and resistant to oxidation, with specific elements which diffused up to the surface and formed a low friction tribolayer. Addition of soft metals such as Ag [16][17][18][19][20] and Cu [21][22][23][24][25], was observed to be one of the more efficient solutions to obtain self-lubrication properties at a wide temperature range. Nevertheless, the strong out-diffusion of the lubricious element and its quick depletion from the entire volume of the film only allows low friction behavior for short periods of time, leading after few minutes to the failure of the film [26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Multilayer Mo2n-Ag/Sinx Films for Demanding Applications: Morphology, Structure and Temperature-Cycling Tribological Properties

Zhou

Yang³

et al. 2022

SSRN Journal

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Effect of the core-shell structure powders on the microstructure and thermal conduction property of YSZ/Cu composite coatings

Cited by 10 publications

References 42 publications

Air plasma-sprayed high-entropy (Y0.2Yb0.2Lu0.2Eu0.2Er0.2)3Al5O12 coating with high thermal protection performance

Air plasma-sprayed high-entropy (Y0.2Yb0.2Lu0.2Eu0.2Er0.2)3Al5O12 coating with high thermal protection performance

Trajectories of titanium powder particles of diffferent size in a plasma flow

Multilayer Mo2n-Ag/Sinx Films for Demanding Applications: Morphology, Structure and Temperature-Cycling Tribological Properties

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