Results 1 to 10 of about 184 (114)

Research Progress and Prospects of Ultra-High-Temperature Ceramics: Experimentation, Multiscale Simulation and Data-Driven Design [PDF]

Nanomaterials
Ultra-high-temperature ceramics (UHTCs), including transition-metal carbides, nitrides, and diborides, have emerged as a class of promising structural materials for applications in extreme aerospace and energy environments. Their strong covalent–metallic
Nan Qu, Wentao Zhou, Wei Zhang, Yong Liu, Lu Zheng, Dingbo Cao, Mingyi Tan, Jingchuan Zhu, Xinghong Zhang   +8 more
doaj   +2 more sources

Mathematical modeling and simulation of porosity on thermomechanical properties of UHTCs under hypersonic conditions

International Journal of Ceramic Engineering & Science, 2023
Ultrahigh temperature ceramics (UHTCs) were analyzed for their suitability in hypersonic flight conditions using balanced heat equations, transport equation, and finite element modeling technique. Mathematical model was derived on the assumption that the
Karthikeyan Ramachandran, Stefano Russo, Doni Daniel Jayaseelan   +2 more
exaly   +2 more sources

Advances in ultra-high temperature ceramics, composites, and coatings

Journal of Advanced Ceramics, 2021
Ultra-high temperature ceramics (UHTCs) are generally referred to the carbides, nitrides, and borides of the transition metals, with the Group IVB compounds (Zr & Hf) and TaC as the main focus.
Dewei Ni, Yuan Cheng, Ji-Xuan Liu
exaly   +2 more sources

Hierarchical Strain‐Modified Medium‐Entropy Carbide Ceramics Exhibit Exceptional Ablation Resistance up to 2400°C [PDF]

Advanced Science
Carbide ultrahigh‐temperature ceramics (UHTCs) exhibit high melting points and are regarded as promising candidate materials for applications in ultrahigh‐temperature conditions, such as high‐speed flight vehicles.
Junyi Xiao, Pengfei He, Lin Xue, Shujun Hu, Liliang Shao, Chuan Sun, Yunyun Ge, Jiangbo Cheng, Xiubing Liang   +8 more
doaj   +2 more sources

Functionally Graded Oxide Scale on (Hf,Zr,Ti)B2 Coating with Exceptional Ablation Resistance Induced by Unique Ti Dissolving [PDF]

Advanced Science
Multicomponent Ti‐containing ultra‐high temperature ceramics (UHTCs) have emerged as more promising ablation‐resistant materials than typical UHTCs for applications above 2000 °C. However, the underlying mechanism of Ti improving the ablation performance
Junshuai Lv, Wei Li, Yanqin Fu, Menglin Zhang, Lingxiang Guo, Fanyu Lu, Jiachen Li, Tao Li, Yulei Zhang, Hejun Li   +9 more
doaj   +2 more sources

Ti3C2Tx MXene‐Zirconium Diboride Based Ultra‐High Temperature Ceramics [PDF]

Advanced Science
MXenes are a family of two‐dimensional (2D) transition metal carbides, nitrides, and carbonitrides with potential applications in ceramics and composites due to their nanometer‐thick morphology, hydrophilic surfaces, and negative zeta potentials. In this
Srinivasa Kartik Nemani, Nicola Gilli, Steven Goldy, Ankit Kumar, Yooran Im, Austin J. Vorhees, Brian C. Wyatt, Nithin Chandran BS, Nikhilesh Chawla, Garritt J. Tucker, Laura Silvestroni, Babak Anasori   +11 more
doaj   +2 more sources

Ultra-high temperature ceramics modified carbon/carbon composites

Cailiao gongcheng, 2021
Carbon/Carbon(C/C) composites are widely used in aerospace industry due to their diverse advantages such as low density, reliable thermal shock resistance and excellent mechanical properties at elevated temperatures.
XIE Qi-ying, ZHANG Yi, ZHU Yang, CUI Hong   +3 more
doaj   +1 more source

Effect of solid oxidation products on the ablation mechanisms of ZrC and HfC based coatings above 2000°C

Journal of Materials Research and Technology, 2023
Solid and liquid oxidation products have been considered to be the key issues to influence the ablation resistance of UHTCs coatings. However, the effect of solid oxidation products on the ablation performance is not clear.
Yixiang Xu, Xiaohui Pan, Shansong Huang, XueTing Xu, Yaran Niu, Xin Zhong, Xuebin Zheng   +6 more
doaj   +1 more source

Ultra-High Temperature Ceramics for solar receivers: spectral and high-temperature emittance characterization [PDF]

Journal of the European Optical Society-Rapid Publications, 2012
We report on the preparation, room temperature spectral reflectance and high-temperature thermal emittance characterization of different boride and carbide Ultra-High Temperature Ceramics (UHTCs).
Sani E., Mercatelli L., Jafrancesco D., Sans J. L., Sciti D.   +4 more
doaj   +1 more source

Sol-gel derived porous ultra-high temperature ceramics

Journal of Advanced Ceramics, 2020
Ultra-high temperature ceramics (UHTCs) are considered as a family of nonmetallic and inorganic materials that have melting point over 3000 °C. Chemically, nearly all UHTCs are borides, carbides, and nitrides of early transition metals (e.g., Zr, Hf, Nb,
Fei Li, Xiao Huang, Ji-Xuan Liu, Guo-Jun Zhang   +3 more
doaj   +1 more source