JOURNAL OF THE AMERICAN CERAMIC SOCIETY

Yuna Choi, Jae Young Jung, Dong‐Gun Kim, Nam Dong Kim et al.

Abstract Enhancing both the activity and durability of oxygen reduction reaction (ORR) is essential for the advancement of proton exchange membrane fuel cells (PEMFCs) in practical applications. In this study, we present a novel strategy to synthesize highly dispersed PtCu alloy nanoparticles (NPs) within etched carbon supports using copper oxides seed‐mediated carbon oxidation…

Stuti Devendra Upadhyay, Param Punj Singh, Vinay Thakur, Raghavan Ranganathan

Abstract Biomimetic materials, inspired by nature's evolutionary designs, offer exceptional mechanical properties that have revolutionized the fields of structural resilience, impact resistance, and fracture mitigation. This review provides a comprehensive overview of recent advances in the modeling and simulations of structure–property relationships in key biomimetic systems, …

Shiqiang Hao, Richard P. Oleksak, Michael C. Gao

Abstract Current and future high‐temperature materials rely on oxide layers formed during service or applied as coatings to protect components from oxidation‐ and corrosion‐induced damage. Understanding of defect diffusion within these oxides is often lacking, despite the central role of these processes in dictating material performance. This study investigates the intrinsic de…

Yufan Hu, Yapeng Zheng, Wei Zhai, Jianyuan Wang

ABSTRACT The machine learning models for rationally designing high‐entropy nitride coatings with high strength/toughness were developed. The Vickers hardness and Poisson's ratio datasets including ternary, quaternary, and quinary TiN‐ and ZrN‐based nitride coatings were built through high‐throughput first‐principles calculations. Random forest, support vector regression and dee…

Jeong‐Min Cheon, Kerui Lai, In‐Ho Jung

ABSTRACT The RE ₂ O ₃ –MgO binary systems provide fundamental phase‐equilibria information for high‐temperature oxide ceramics, including MgO‐based refractories modified with rare‐earth oxides and RE ₂ O ₃ ‐based advanced ceramic materials used in semiconductor‐processing and aerospace applications. In this study, thermodynamic modeling of the RE ₂ O ₃ –MgO bi…

Qingqing Yang, Yue Mi, Cong Ao, Yongkang Chen et al.

ABSTRACT As a high‐performance functional layer integrated onto the glass back sheet, the high‐reflectivity photovoltaic (PV) coating demonstrates significant potential to enhance module power output. This enhancement arises from the retroreflection of unabsorbed solar irradiance toward the active cell region, thereby enabling secondary optical absorption. Consequently, optimiz…

Delia Gutiérrez‐Campos, Emmanuel De Bilbao, Analía G. Tomba Martinez

ABSTRACT In the field of refractories, service conditions—often involving high temperatures and extended duration—make the systems more likely to evolve according to the thermodynamics laws. In steelmaking ladles, the chemical degradation of the refractory lining is a critical factor determining its performance and durability. This work revisits the application of thermodynamic…

Zeyu Chen, Yiling Huang, Fan Peng, Yue Sun et al.

ABSTRACT Rare‐earth silicates (RE ₂ Si ₂ O ₇ and RE ₂ SiO ₅ ) are leading candidates for third‐generation environmental barrier coatings (EBCs) because they combine corrosion resistance to molten calcium–magnesium–aluminosilicate (CMAS) and high‐temperature water vapor with thermal expansion coefficients (CTEs) compatible with ceramic matrix composites (CMCs), hi…

Haoyan Zhang, Canrong Luo, Huairen Cui, Zaijin Fang et al.

ABSTRACT Developments for high light yield and high density of Ce ³⁺ ‐doped glass scintillators are of fundamental importance for practical applications in fields of nuclear medical imaging and high‐energy physics. Here, a series of Ce ³⁺ ‐doped glass scintillators was designed. The glasses exhibit broadband emissions around 380 nm, and the photoluminescence quantum yield…

Christopher D. Eadie, Jules W. Lindau, Benjamin E. Cowen, Chloe A. Fellabaum et al.

ABSTRACT This study aims to enhance additive manufacturing of ceramics with crystallographically aligned microstructures, known as textured ceramics. Additive manufacturing is pursued because it addresses limitations of the current standard process, tape casting. However, circular nozzles typical of the direct ink writing (DIW) process fail to align particles effectively, resul…

Anuraag Gaddam, George E. Stan, Shweta R. Keshri, Hugo R. Fernandes et al.

ABSTRACT Owing to the possibility of attaining variable oxidation states and coordination numbers, the specific structural roles of V ₂ O ₅ or Nb ₂ O ₅ in determining the local configurations of framework species in alkaline earth aluminoborosilicate glasses still need to be disclosed. This manuscript describes the structural changes induced by adding 5 mol% of V _{…

Chang‐Hao Wang, Zi‐Yang Liu, Kai‐Heng Zhang, Xin Wang et al.

ABSTRACT In this study, BaCo ₂ Si ₂ O ₇ ceramics with a novel melilite‐type structure (space group C2/c) were synthesized via a solid‐state reaction method. Ba ₃ V ₂ O ₈ with positive TCF value was introduced into (1‐ x )BaCo ₂ Si ₂ O ₇ ‐ x Ba ₃ V ₂ O ₈ composites ( x = 0.1–0.7) to tune the large negative TCF of BaCo ₂ Si ₂ O ₇ ceram…

Le Lu, Zhiyuan Ma, Zhaofeng Chen, Lixia Yang et al.

ABSTRACT SiC _f /SiC has shown great potential for high‐temperature structural applications such as aero‐engine components, but repeated precursor infiltration and pyrolysis (PIP) often leave large interconnected macropores due to precursor loss and fiber architecture constraints. These defects promote stress concentration and oxidation, degrading structural reliability. To a…

Longhai Yang, Zeyu He, Kai Li, Tao Zhang

ABSTRACT K ⁺ ‐doped Bi _2/3 Cu ₃ Ti ₄ O ₁₂ multilayer ceramics with homogeneous, symmetric, and gradient architectures were fabricated via a conventional solid‐state reaction method combined with layer‐by‐layer dry pressing. All samples showed no obvious delamination and mainly formed dense cubic‐like perovskite primary phases. Dielectric measurements revealed tha…

Shenjian Huang, Luiz Pereira, Xuelian Liu, Ruidong Jia et al.

ABSTRACT Spinel and platinum‐group‐element (PGE) crystals are commonly present in nuclear waste glass melts at high temperatures and their accumulation at the bottom of the melts can affect high‐temperature processing. However, the high‐temperature electrical behavior of spinel‐bearing nuclear waste melts, and particularly systems containing both spinel and PGE crystals, remain…

Kaden Anderson, Nathan Gillespie, Luis Stand, Marlena Alexander et al.

ABSTRACT High‐energy X‐ray radiography plays a critical role in national security as it is used to scan cargo for illicit materials, including special nuclear materials. However, currently used scintillators face cost or performance drawbacks, driving the search for superior alternatives. We propose compositionally complex aluminum garnets, particularly (Gd _0.25 Y _0.25 Tb…

Ziqi Wang, Xinquan Hou, Yongzhen Wang

ABSTRACT High entropy oxides (HEOs) have emerged as promising catalysts for the oxygen evolution reaction (OER) in water splitting. Herein, five elements were selected: Fe, Co, and Ni for their exceptional OER catalytic activity, alongside Cr and Mg to exploit their zero‐spin electronic configurations and cost‐effectiveness. Through a combination of systematic experiments and d…

Liang Guo, Shaoyu Wang, Yuzheng Zhang, Jianping Sun et al.

ABSTRACT The high‐power density of electronic devices imposes urgent demands on packaging materials with high thermal conductivity and low thermal expansion. Epoxy resin (EP), a widely used packaging material, suffers from intrinsically low thermal conductivity and high coefficient of thermal expansion (CTE). In this work, Al ₂ O ₃ nanoparticles were incorporated into EP …

Ying‐Chieh Lee, Huei‐Jyun Shih, Hui‐Chun Huang, Cheng‐Da Tsai

ABSTRACT This study presents a cost‐effective plasma spraying strategy for regenerating worn alumina electrostatic chuck (ESC) surfaces. Different coating compositions and heat treatment temperatures were investigated to optimize the repair conditions. x‐Ray diffraction (XRD) analysis reveals that α ‐Al ₂ O ₃ partially transforms into γ ‐Al ₂ O ₃ during rapid quench…

Shengnan Sha, Kunlin Luo, Yuhui Lyu, Hailong Ye

ABSTRACT Workability control of alkali‐activated binders (AABs) remains an obstacle to producing low‐carbon clinkerless ultra‐high‐performance concrete, as their formulation usually necessitates low water‐to‐binder (W/B) ratios, high binder content, and concentrated activator solutions. To address this challenge, a greener and more manageable composite K ₂ CO ₃ –KOH activ…