Article
Materials Science, Ceramics
Shiming Xie, Chen Song, Zexin Yu, Shaowu Liu, Frederic Lapostolle, Didier Klein, Chunming Deng, Min Liu, Hanlin Liao
Summary: In this study, YSZ thermal barrier coatings were prepared using suspension plasma spraying under different environmental pressures, and the resulting coatings showed significant changes in structure, surface roughness, nanoparticle agglomeration, and real porosity under lower environmental pressures.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Aminul Islam, Akanksha Sharma, Pushpender Singh, Niranjan Pandit, Anup Kumar Keshri
Summary: Atmospheric plasma sprayed CeO2 overlay on YSZ coating (CYSZ) improves its resistance against CMAS penetration and enhances thermal insulation performance.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Chemical
Haitao Lu, Jiajing Pan, Yu Gu, Junyi Xiao, Xiaofeng Hu, Long Tan, Mingli Lv
Summary: The powder deposition behavior and substrate surface evolution of the YSZ-NiCoCrAlY thermal barrier coating system were explored using a metal-ceramic bilayer powder deposition model. The results showed that the softening degree of NiCoCrAlY particles and YSZ particles differed, and their respective properties influenced the overall temperature and equivalent stress of the coating. The metal bond-layer served to protect the substrate and reduce the impact of the ceramic top-layer.
Article
Materials Science, Coatings & Films
Jibo Huang, Xin Chu, Tin Yang, Huanjie Fang, Dongdong Ye, Weize Wang, Xiaofeng Zhang, Wen Sun, Renzhong Huang, Chang-Jiu Li
Summary: In this study, porous coatings with different flattened particles and pore structures were designed through an improved powder feeding process. The anti-sintering performance of the coatings can be improved by adjusting the pore structure.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Engineering, Civil
Olena Poliarus, Jerzy Morgiel, Wojciech Zorawski, Anna Goral, Malgorzata Pomorska, Krzysztof T. T. Wojciechowski, Oleksandr Cherniushok
Summary: Yttrium-stabilized zirconia (YSZ) thermal barrier coatings (TBCs) are essential in turbine propulsion systems. The application of YSZ coatings deposited with atmospheric plasma spraying (APS) is limited due to their inability to withstand frequent thermomechanical loading. However, modifying the plasma spraying process by using nano-structured suspension instead of micrometric powders offers the highest improvement in properties and requires minimal changes in industry procedures.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
Article
Materials Science, Ceramics
Ashish Ganvir, Mohit Gupta, Nitish Kumar, Nicolaie Markocsan
Summary: This study investigated the influence of suspension characteristics on the performance of suspension plasma sprayed thermal barrier coatings (TBCs), revealing that TBCs produced using different suspensions showed varied performance. TBCs produced using ethanol suspension exhibited the best TS lifetime, while TBCs produced using water suspension with solid load content showed the lowest lifetime. Additionally, TBCs produced using ethanol suspension showed slightly better thermal cyclic fatigue lifetime compared to TBCs produced using water and ethanol-water mixed suspensions.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Coatings & Films
Shiming Xie, Chen Song, Shaowu Liu, Pengjiang He, Frederic Lapostolle, Didier Klein, Chunming Deng, Min Liu, Hanlin Liao
Summary: The study utilized low-pressure suspension plasma spraying (LPSPS) to prepare high-density nanostructured coatings, with findings suggesting that the environmental atmosphere plays a critical role in the microstructure of the coatings. A high-density nanostructured YSZ coating was successfully prepared by atmosphere control based on proposed deposition mechanisms in different atmospheres.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
Yasuhiro Yamazaki, Masahiro Morikawa, Tatsuya Hamaguchi, Yoichiro Habu, Yuhei Ohide, Kaito Takagi
Summary: This study investigates the mechanical properties of a suspension plasma-sprayed thermal barrier coating with a cauliflower-like columnar structure, revealing its superior durability and low Young's modulus. The mechanical properties are influenced by the level of thermal aging.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Ji Bo Huang, Wei Ze Wang, Yuan Jun Li, Huan Jie Fang, Dong Dong Ye, Xian Cheng Zhang, Shan Tung Tu
Summary: This study has shown that the novel-structured thermal barrier coatings (TBCs) exhibit superior performance compared to conventional and nanostructured TBCs in terms of thermal insulation ability, sintering resistance, durability, and thermal shock lifetime. The thermal conductivity of the novel-structured TBCs is significantly lower than that of the other two types, even after thermal treatment. The macroscopic elastic modulus of the novel-structured TBCs is comparable to the conventional and nanostructured TBCs after sintering, and their thermal shock lifetime is much longer.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
E. Canas, E. Rosado, C. Alcazar, M. J. Orts, R. Moreno, E. Sanchez
Summary: By using thermal spraying from concentrated aqueous suspensions, the possibility of obtaining coatings with significant amounts of preserved zircon has been evaluated successfully. The microstructural features of the coatings and the quantification of zircon content have been characterized.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Zydrunas Kavaliauskas, Romualdas Kezelis, Mindaugas Milieska, Liutauras Marcinauskas, Vitas Valincius, Mindaugas Aikas, Rolandas Uscila, Arunas Baltusnikas, Audrius Zunda
Summary: Yttria-stabilized zirconia (YSZ) coatings were deposited at different arc currents using atmospheric plasma spraying, and their properties were studied through various tests. The results showed that increasing arc current enhanced surface oxidation of YSZ coatings, while YSZ coatings deposited on rotating substrates exhibited better performance compared to those on immobile substrates.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Coatings & Films
Shiven Ponnapureddy, Alok Bhadauria, Shipra Bajpai, Ashutosh Tiwari, Krishna Kant Pandey, Anup K. Keshri, Kantesh Balani
Summary: This study investigates the use of a bimodal microstructure consisting of nanometer-sized Al2O3, micrometer-sized Al2O3, 3YSZ, and CNT as a thermal barrier coating. The coating, deposited onto an Inconel 718 substrate, shows improved density and crack resistance compared to conventional Al2O3 coatings.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Coatings & Films
Jiasen Han, Yong Zou, Dongting Wu, Ji Chen, Yongang Zhang
Summary: In this study, the resistance to CMAS corrosion of Al2O3/YSZ TBCs with different Al2O3 additions was compared to 7YSZ TBCs. It was found that increasing the Al2O3 addition restricted the depth of the thermo-chemical reaction zone and promoted anorthite crystallization, improving the CMAS corrosion resistance.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Yongchao Fang, Xiufang Cui, Chao Yan, Zhuo Chen, Yongzhi Jing, Xin Wen, Guo Jin, Haoliang Tian
Summary: By studying the thermal cycling behaviors of LBT-YSZ and YSZ coatings at 1000 degrees Celsius, it was found that the thermal cycling lifetime of the LBT-YSZ coating was 27% higher than that of the YSZ coating. The LBT-YSZ coating exhibited different thermal cycling behaviors, with deflection and formation of slope cracks during quenching. Additionally, the lower fracture toughness of the LBT layer protected the central coating.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Reza Pourshahsavari, Amirhossein Yaghtin, Navid Hosseinabadi
Summary: This research evaluated the preparation and thermal behaviors of nanoparticulate yttria stabilized zirconia (YSZ) coatings. Aqueous suspensions containing YSZ nanoparticles were used to deposit thermal barrier coatings through the suspension plasma spraying (SPS) method. The coating obtained from the optimal suspension showed a promising columnar-shaped structure and had longer lifetimes during hot corrosion and thermal shock experiments compared to the coating obtained from nonoptimized YSZ. It is concluded that by optimizing the water-based suspension of YSZ nanoparticles, thermal barrier coatings with improved properties and increased lifetime can be achieved.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Ceramics
Dan Zhao, Yi Feng, Zhipeng Pi, Fan Zhang
Summary: Phase equilibria in the ZrO2-GdO1.5-TaO2.5 (ZGTO) system were experimentally investigated, and the differences between ZGTO and the existing ZrO2-YO1.5-TaO2.5 (ZYTO) were discussed. The study is useful for thermodynamic assessment of ZGTO and can guide the design of novel thermal barrier coatings materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yutaka Ohya, Wingki Mey Hendra, Chika Takai-Yamashita, Takayuki Ban
Summary: Diffusion couples of rutile and corundum single crystals were prepared and examined to study the solid solution and precipitation of corundum in rutile during cooling. Different precipitation forms of corundum were observed under different cooling conditions.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jiaming Zhan, Yunfa Guo, Hao Wang
Summary: This study systematically investigates the mechanical behaviors of calcium fluoride in humid environments. The effects of water on the deformation and plastic enhancement of CaF2 under indentation are explored through microindentation experiments, atomic simulations, and Raman spectroscopy measurement.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Hangfeng Zhang, Henry Giddens, Theo Graves Saunders, Matteo Palma, Isaac Abrahams, Haixue Yan, Yang Hao
Summary: The relationship between low and high frequency tunabilities in tin substituted barium titanate ceramics was investigated. It was found that there are differences in tunabilities at different frequencies due to the different activities of larger ferroelectric domains and polar nanoclusters.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Kaibiao Xi, Jiacheng Liu, Beibei Song, Huarong Cheng, Yihao Li, Xiaole Yu, Mupeng Zheng, Mankang Zhu, Yudong Hou
Summary: Composite modulation in the superparaelectric state of the BTBZ-CT system is proposed as an effective strategy to achieve both NTCC and excellent energy storage performance in dielectric ceramics. The addition of BZ and CT to BT ferroelectrics can move the SPE state to the normal use temperature zone, resulting in enhanced NTCC characteristics and energy storage performance. Furthermore, intentional precipitation of CT at grain boundaries can refine the grain size, increase the bandgap, and strengthen the local electric field distribution, thereby enhancing the breakdown electric field.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Hamed Salimkhani, Lovro Fulanovic, Till Froemling
Summary: The demand for robust multilayer ceramic capacitors with high-temperature and high-power capabilities is increasing rapidly. However, cost-effective production is a challenge. This study investigates the use of Na0.5Bi0.5TiO3-based materials as promising lead-free options. By adding sintering aids, the sintering temperature of Na0.5Bi0.5TiO3-BaTiO3-CaZrO3-BiAlO3 solid solutions was successfully reduced to 975 degrees C, suitable for co-sintering with Cu electrodes without adverse effects on capacitor properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Mingxing Li, Ran Mo, Zeshui Xu, Jie Zhou, Conglin Zhang, Xuefeng Cui, Fang Ye, Laifei Cheng, Ralf Riedel
Summary: Polymer infiltration and pyrolysis is an effective method for preparing ceramic matrix composites. The transformation of polymer to ceramic during the process affects the residual stress and interface behavior in the composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yan Kang, Lin Chen, Chang-Jiu Li, Guan-Jun Yang
Summary: A novel abradable seal coating with low hardness and high bonding strength was successfully designed and prepared. This coating has significantly higher abradability and erosion resistance compared to metal-based coatings, and can retain excellent abradability and have a long lifetime during service.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Qingzhong Song, Xiangdong Zha, Ming Gao, Yingche Ma
Summary: This study analyzes the influence of calcia refractory purity on the properties of calcia crucibles. Higher purity calcia results in well-developed grains and improved hydration resistance, leading to better high-temperature strength and thermal shock resistance. In contrast, lower purity calcia crucibles exhibit inferior properties. Therefore, high-purity calcia is considered a potential refractory for manufacturing oxide crucibles.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Sehreish Abrar, Faisal Nazeer, Zhuang Ma, Ling Liu, Abdul Malik, Mustafa Kamal, Abdullah G. Al-Sehemi
Summary: To raise the operating temperature of Si-based ceramic matrix composites (CMCs), researchers have applied thermal/environmental barrier coating (T/EBCs) materials, typically rare earth silicates. However, the high thermal conductivity and the mismatch of thermal expansion have been major challenges in developing new materials that can offer thermal insulation and environmental protection to CMCs. In this study, entropy engineering was used to create a multicomponent equi-atomic single-phase pyro silicate with extremely low thermal conductivity and enhanced water vapor corrosion resistance. The research findings show the potential of high entropy disilicates in achieving ultra-low thermal conductivity and low weight loss in corrosive environments.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Zi-bo Niu, Daxin Li, Dechang Jia, Zhihua Yang, Kunpeng Lin, Paolo Colombo, Ralf Riedel, Yu Zhou
Summary: In this study, SiBCN ceramics with a special structure were prepared to improve the oxidation resistance. The effect of the structure on oxidation behavior and kinetics was investigated, revealing that the special structure can effectively inhibit heterogeneous oxidation and enhance the oxide layer composition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Melike Donmez, Metehan Erdogan, Cihangir Duran
Summary: The limited densification of CeO2 ceramics was improved by using an anorthite-based glass, resulting in high dielectric constant and quality factor with minimum dielectric loss. The CeO2-(anorthite-based) glass ceramic showed promising results in terms of low temperature densification and microwave properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
S. Rahmati, R. G. A. Veiga, J. Mostaghimi, T. Coyle, A. Dolatabadi
Summary: This study provides an atomic-scale description of the high-velocity impact of alpha-Al2O3 particles onto an alpha-Al2O3 substrate during Aerosol Deposition (AD). The results suggest that the crystal orientation plays a crucial role in both plasticity and damage of the nanoparticles. Impact velocity has a direct correlation with plasticity and fragmentation, but adhesion efficiency has only a marginal increase. The crucial element lies in the substrate's surface alterations caused by the fragments left on the substrate after impact.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Bo-Wen Chen, Yan-Mei Kan, De-Wei Ni, Chun-Jing Liao, Hong-Da Wang, Yu-Sheng Ding, Shao-Ming Dong
Summary: This study characterized the long-term and repeated ablation properties of modified Cf/HfC-SiC composites with YB4-Al2O3-Si3N4 under an air plasma torch. The structural stability and viscosity of the oxide layer were found to affect the ablation resistance of the composites. By forming nano c-HfO2 grains and high-viscosity Al-Si-Y-O glassy phase, the structural stability of the oxide layer was improved, resulting in enhanced ablation resistance. However, the oxidation of Si3N4 led to the formation of NO, NO2, and excessive SiO2 glassy phase, which resulted in a porous structure and reduced the viscosity of the oxide layer. Therefore, the addition of Si3N4 decreased the ablation resistance of the composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yongxing Wei, Huawei Zhang, Siyuan Dong, Changqing Jin, Chenxing Bai, Junle Dai, Zengzhe Xi, Zhonghua Dai, Zengyun Jian, Li Jin
Summary: In this study, solid solutions of xBi(Ni1/2Hf1/2)O-3-(1 - x)PbTiO3 (xBNH-PT) were synthesized to investigate their phase boundary behaviors and physical properties. The presence of a tetragonal-pseudocubic phase boundary and a spontaneous ferroelectric-relaxor transition at specific compositions were confirmed. The introduction of a tetragonal-pseudocubic phase boundary improved the piezoelectric properties and suppressed the spontaneous ferroelectric-relaxor transition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)