Results 41 to 50 of about 4,174,047 (104)

Exceptional Hardness and Thermal Properties of SiC/(Hf,Ta)C(N)/(B)C Ceramic Composites Derived from Single‐Source Precursor

Advanced Engineering Materials, Volume 26, Issue 17, September 2024.
Si(B)C/(Hf0.75Ta0.25)C(N)/C ceramic composites are prepared via spark plasma sintering of amorphous SiHfTaBCN‐based powders. The inclusion of boron led to enhanced densification and great homogeneity of the microstructure, besides decreasing the thermal conductivity and increasing the Vickers hardness (31 GPa) as well as the Young's modulus (405 GPa ...
Jan Bernauer, Nils‐Christian Petry, Nathalie Thor, Samuel Aeneas Kredel, Dharma Teja Teppala, Mathias Galetz, Maren Lepple, Astrid Pundt, Emanuel Ionescu, Ralf Riedel   +9 more
wiley   +1 more source

Thermal Conductivity Analysis of Polymer‐Derived Nanocomposite via Image‐Based Structure Reconstruction, Computational Homogenization, and Machine Learning

Advanced Engineering Materials, Volume 26, Issue 17, September 2024.
Establishing a structure–property relation (SPR) is crucial for tailored material design. Herein, an SPR is developed using machine learning (ML) on microstructural and thermal data, validated by experiments. A diffuse‐interface model handles the complexity of the microstructure to calculate the effective thermal conductivity by finite element methods.
Mozhdeh Fathidoost, Yangyiwei Yang, Nathalie Thor, Jan Bernauer, Astrid Pundt, Ralf Riedel, Bai‐Xiang Xu   +6 more
wiley   +1 more source

Material selection and manufacturing for high‐temperature heat exchangers: Review of state‐of‐the‐art development, opportunities, and challenges

International Journal of Ceramic Engineering &Science, Volume 6, Issue 5, September 2024.
High temperature heat exchangers may be designed from ceramics to achieve higher performance, and various materials and manufacturing techniques can help achieve highly efficient high temperature systems. Abstract Many energy systems demand heat transfer at high temperatures to keep up with high demand for power, so high‐temperature material that can ...
Corson L. Cramer, Edgar Lara‐Curzio, Amy M. Elliott, Trevor G. Aguirre, Bola Yoon, Brian A. Fricke, Vivek Rao, Prashant Jain, Kashif Nawaz   +8 more
wiley   +1 more source

Knudsen effusion mass spectrometry: Current and future approaches

Rapid Communications in Mass Spectrometry, Volume 38, Issue 14, 30 July 2024.
Rationale Knudsen effusion mass spectrometry (KEMS) has been a powerful tool in physical chemistry since 1954. There are many excellent reviews of the basic principles of KEMS in the literature. In this review, we focus on the current status and potential growth areas for this instrumental technique.
Nathan S. Jacobson, Jean‐Yves Colle, Valentina Stolyarova, Torsten Markus, Ioana Nuta   +4 more
wiley   +1 more source

Investigation of the properties of ZrC nanopowder synthesized by the carbothermal reduction method using phenolic resin

International Journal of Ceramic Engineering &Science, Volume 6, Issue 2, March 2024.
Abstract Owing to economic reasons and the morphology of the surface of particles, carbothermal reduction is a suitable method for the synthesis of the desired materials. In this research, ZrC nanopowder was synthesized using phenolic resin as the carbon source and ZrO2 powder as the source of zinc by the carbothermal method. ZrO2 powder was milled for
Farhad Farhang Rad, Mehri Mashhadi, Kianoosh Akbari Arateh   +2 more
wiley   +1 more source

Modeling of Oxidation Effects on Heat Transfer Behavior of ZrB₂ and ZrB₂-SiC Ceramics at High Temperature

, 2012
Hypersonic vehicles need thermal protection materials such as ultrahigh temperature ceramics (UHTCs). ZrB2 and ZrB2-SiC have been proposed as candidates for such applications.
Wei, Jun, Chandrashekhara, K., K. Chandrashekhara, Fahrenholtz, William, Lokeswarappa Dharani, Dharani, Lokeswarappa R., Jun Wei, Hilmas, Greg, William Fahrenholtz, Gregory Hilmas   +9 more
core   +1 more source

Bilateral project: Transient-Liquid-Phase Bonding of UHTCs Using Refractory-Metal-Based Interlayers for High-Efficiency Energy-Generation Applications

, 2011
This project seeks to fill an emerging technological need by developing effective methods of joining high-performance ultrahigh temperature ceramics (UHTCs) using metal-based materials through a fundamental understanding and exploitation of phenomena ...
Noritaka Saito, Laura Esposito
core  

Advances in oxidation and ablation resistance of high and ultra-high temperature ceramics modified or coated carbon/carbon composites

, 2017
Carbon/carbon (C/C) composites are considered as one of the most promising materials in structural applications owing to their excellent mechanical properties at high temperature.
Fan, X., Lu, Chunsheng, Jin, X., Wang, T.   +3 more
core   +2 more sources

Crystal-size dependence of the spark-plasma-sintering kinetics of ZrB2 ultra-high-temperature ceramics

, 2012
The crystal-size dependence of the spark-plasma-sintering (SPS) kinetics of ZrB2 ultra-high-temperature ceramics (UHTCs) was investigated. It was found that refining the starting powder enhances the SPS kinetics, reducing the onset temperatures of ...
A.L. Ortiz, Nygren, Mats,, Zamora, V., Ortiz, A. L., M. Nygren, V. Zamora, F. Guiberteau, Guiberteau, F.   +7 more
core   +1 more source

Enhancing Ablation Resistance of TaB2-Based Ultra-High Temperature Ceramics by Mixing Fine TaC Particles and Dispersed Multi-Walled Carbon Nanotubes

Ultra-high temperature ceramics (UHTCs) have been widely applied in many fields. In order to enhance the comprehensive properties of TaB2-based UHTCs, the first collaborative use of fine TaC particles and dispersed multi-walled carbon nanotubes (MWCNTs ...
Xiaoling Xu, Jinyong Yan, Huanhuan Li, Luona Ye, Xingjian Su, Xiaoke Tian, Zhaorui Gu, Guangxu Bo, Yunjun Yan   +8 more
core   +1 more source