Influence of unmelted nanoparticles on properties of YSZ nano-coatings

Bai, Yu; Wang, Y. H.; Wang, Zhi; Fu, Qiang; Han, Zelin

doi:10.1179/1743294414y.0000000285

Cited by 7 publications

(3 citation statements)

References 16 publications

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“…A single ceramic material can be challenging to fulfil all of the coated ceramic materials' conditions, using a mixture of two or more ceramic materials to overcome these situations. In addition to yttria-stabilized zirconia in the range of 6-8 wt.%, this gives the topcoat powder grains better performance because of its comparatively lower density, lower thermal conductivity and higher concentration for point defects [15]. Many researchers want to develop the YSZ coating structure's excellent quality, which improves the components' durability and reliability at a higher working temperature [16].…”

Section: Topcoatmentioning

confidence: 99%

Processing and Advancements in the Development of Thermal Barrier Coatings: A Review

et al. 2022

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Thermal barrier coating is critical for thermal insulation technology, making the underlying base metal capable of operating at a melting temperature of 1150 °C. By increasing the temperature of incoming gases, engineers can improve the thermal and mechanical performance of gas turbine blades and the piston cylinder arrangement. Recent developments in the field of thermal barrier coatings (TBCs) have made this material suitable for use in a variety of fields, including the aerospace and diesel engine industries. Changes in the turbine blade microstructure brought on by its operating environment determine how long and reliable it will be. In addition, the effectiveness of multi-layer, composite and functionally graded coatings depends heavily on the deposition procedures used to create them. This research aims to clarify the connection between workplace conditions, coating morphology and application methods. This article presents a high-level overview of the many coating processes and design procedures employed for TBCs to enhance the coating’s surface quality. To that end, this review is primarily concerned with the cultivation, processing and characteristics of engineered TBCs that have aided in the creation of specialized coatings for use in industrial settings.

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Section: Topcoatmentioning

confidence: 99%

Processing and Advancements in the Development of Thermal Barrier Coatings: A Review

et al. 2022

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“…Both micro-and nano-level technologies were present in the YSZ employed in the thermal spray method [2][3][4]. Initially, physical vapour deposition (PVD), chemical vapour deposition (CVD), and electron beamassisted PVD (EB-PVD) sputtering techniques were used to deposit thermal barrier coatings [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanotubes Enhance the Mechanical and Corrosion Properties of Thermally Sprayed Ceramic Coatings

Kalangi,

Veeram

2023

Preprint

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In order to evaluate the coating's characteristics, thermally sprayed ceramic coatings with varied weight percentages of carbon nanotube (CNT) reinforcement were examined. AISI 1020 steel was coated with yttria-stabilized zirconia (ZrO2 + 8% Y2O3) using the air plasma spraying (APS) method. The study examined the CNT dispersion in the coating microstructure and evaluated the porosity, bond strength, and corrosion resistance of the coating. In addition, the coatings' thickness was measured. The coatings were characterised using a variety of techniques, including optical microscopy, scanning electron microscopy, image analysis, bond strength testing, and corrosion analysis. According to the findings, adding CNTs to the coatings improved their mechanical characteristics, particularly their hardness and wear resistance. Notably, the best levels of hardness and wear resistance were seen in coatings with a 5 percent CNT reinforcement. Additionally, the coatings' corrosion resistance was enhanced by the inclusion of CNTs. The results of this work show that the mechanical and corrosion properties of thermally sprayed ceramic coatings can be successfully improved by the inclusion of CNTs. This means that these CNT-reinforced coatings have a lot of potential for a variety of applications, such as wear-resistant, corrosion-resistant, and thermal barrier coatings.

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“…YSZ thermal barrier coatings (TBCs) deposited using atmospheric plasma spraying on nicked-based superalloy DZ125 substrate were examined by Wang et al and found that the type of bonding, metallurgical structure, and YSZ coatings' porosity had improved [1]. e source of YSZ for the thermal spray process is in the form of micro-level and nano-level technology [2][3][4]. Initially, thermal barrier coatings are deposited using sputtering methods like physical vapour deposition (PVD), chemical vapour deposition (CVD), and electron beam assisted PVD process (EB-PVD) [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Influence of Carbon Nanotubes on Enhancement of Sliding Wear Resistance of Plasma-Sprayed Yttria-Stabilised Zirconia Coatings

Kalangi

Bolleddu

2022

Advances in Materials Science and Engineering

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An experimental investigation was performed to study the performance of thermally sprayed yttria stabilised zirconia (YSZ) coatings obtained with the reinforcement of carbon nanotubes (CNTs) in different weight percentage proportions. The atmospheric plasma spray (APS) method was used to deposit YSZ + CNTs at three different weight proportions on low carbon steel (AISI 1020) following the industrial standard procedure. The quality of thermally sprayed coatings was evaluated to report on percentage porosity (ASTM B276), sliding wear resistance (ASTM G133-05), and metallurgical bonding of the coating with the substrate material. From this investigation results, it has been confirmed that the thickness of the coatings is almost uniform, and the percentage porosity is decreased with an increase in CNTs weight percentage proportion. ImageJ software has confirmed the presence of CNTs in the ceramic deposit, and also uniform distribution throughout the coating. Subsequently, the metallurgical bonding of the deposit is also ensured and confirmed that the deposit adheres on the substrate. The hardness of the coating found increased with the increase in CNTs proportion as 554 Hv with 1 wt.% CNTs, 805 Hv with 3 wt.% CNTs, and 933 Hv with 5 wt.% CNTs in thermally sprayed YSZ. The results obtained are highly appreciable when compared to the hardness (454 Hv) of thermally sprayed pure YSZ coating. From results of wear tests, it was found that at slow speed (i.e., 319 rpm), the minimum mass loss was identified for all the three different combinations of CNTs reinforced coatings. However, 5 wt.% of CNTs in YSZ has very minimum wear at 5 kgf load and subsequently mass loss increased with the decrease in CNTs weight percentage proportion. Based on wear resistance, it was found that the 5 wt.% CNTs in YSZ has a maximum wear resistance. Severe wear scars and coating delamination in 1% CNTs reinforced coatings were identified from the microstructural analysis. Therefore, addition of CNTs in YSZ coatings has a significant impact over the wear resistance and mechanical properties improvement of the coatings.

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Influence of unmelted nanoparticles on properties of YSZ nano-coatings

Cited by 7 publications

References 16 publications

Processing and Advancements in the Development of Thermal Barrier Coatings: A Review

Processing and Advancements in the Development of Thermal Barrier Coatings: A Review

Carbon Nanotubes Enhance the Mechanical and Corrosion Properties of Thermally Sprayed Ceramic Coatings

Influence of Carbon Nanotubes on Enhancement of Sliding Wear Resistance of Plasma-Sprayed Yttria-Stabilised Zirconia Coatings

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