Results 51 to 60 of about 951 (206)

High‐Entropy Ti, Zr, Hf, Ta Multiphase Diboride with Deformation Resistance up to 2000 °C

Advanced Engineering Materials, Volume 27, Issue 10, May 2025.
Ceramics are brittle and strength decreases with temperature. The multiphase high‐entropy (Ti0.25Ta0.25Hf0.25Zr0.25)B2 with heterogeneity at the nano‐ and microscale demonstrates deformation resistance up to 2000 °C, with maximum bending strength at 1800 °C.
Petre Badica, Mihai Alexandru Grigoroscuta, Andrei Cristian Kuncser, Oleg Vasylkiv   +3 more
wiley   +1 more source

SEGMENTATION AND ANALYSIS METHOD FOR TWO-PHASE CERAMIC (HfB2-B4C) BASED ON THE DETECTION OF VIRTUAL BOUNDARIES

Image Analysis and Stereology, 2019
Microstructure of a material stores the genesis of the material and shows various properties of the material. To efficiently analyse the microstructure of a material, the segmentation of different phases or constituents is an important step.
Yuexing Han, Chuanbin Lai, Bing Wang, Tianyi Hu, Dongli Hu, Hui Gu   +5 more
doaj   +1 more source

Unveiling the Potential of Metal Diborides for Electrocatalytic Water Splitting: A Comprehensive Review

ENERGY &ENVIRONMENTAL MATERIALS, Volume 8, Issue 3, May 2025.
This review explores metal diborides (MDbs) as promising electrocatalysts for water splitting. It discusses their unique layered crystal structures, high conductivity, and large surface area, which enhance electrochemical performance. Key factors such as catalytic performance, synthetic strategies, and intermediate adsorption are examined, along with ...
Ebrahim Sadeghi, Sanaz Chamani, Naeimeh Sadat Peighambardoust, Umut Aydemir   +3 more
wiley   +1 more source

Synthesis, consolidation and characterization of monolithic and SiC whiskers reinforced HfB2 ceramics

, 2013
Spark Plasma Sintering is used for the fabrication of highly dense HfB2 monolithic and HfB2-26vol.% SiCw composite. Reactive SPS from elemental reactants is preferred for the preparation of bulk HfB2 instead of classical sintering.
Sciti D, ORRU', ROBERTO, MUSA, CLARA, Silvestroni L, CAO, GIACOMO   +4 more
core   +1 more source

Effects of diffusion bonding temperature and holding time on the microstructure and strength of diffusion bonded B4C-HfB2-SiC composite ceramic joint

Journal of Materials Research and Technology
Diffusion bonding of B4C-HfB2-SiC composite ceramic with Ti and NiCoCr medium-entropy alloy as the composite interlayer material was studied in this work. The effects of diffusion bonding temperature and holding time on the interfacial microstructure and
Langxiang Zhong, Biao Liang, Chengmin Chen, Kuijing Song, Zhihong Zhong   +4 more
doaj   +1 more source

Ablation properties of ZrC-SiC-HfB2 ceramic with different amount of carbon fiber under an oxyacetylene flame

Materials Research Express, 2020
In the present work, a carbon fiber reinforced ZrC-20 vol% SiC-15 vol% HfB _2 composite was produced by pressureless sintering method. Carbon fiber with various weight percentages (0, 10, 20, 30) was added to the milled ZrC-SiC-HfB _2 . The mixed powders
Maryam Shojaie-Bahaabad, Alireza Hasani-Arefi   +1 more
doaj   +1 more source

The importance of the vibrational entropy in the mixing stabilization for complex ceramics

Journal of the American Ceramic Society, Volume 108, Issue 3, March 2025.
The vibrational entropy can play an important role in stabilizing complex ceramics which is demonstrated here by comparing the enthalpy, configurational entropy and vibrational entropy of the transition metal carbides and transition metal diborides for pseudo‐binary mixtures.
Xiaochuan Tang, Gregory B. Thompson, Christopher R. Weinberger   +2 more
wiley   +1 more source

Investigation of Molybdenum Disilicide, Boron Carbide and Silicon Carbide Particles on Flexural Strength and Pressureless Sintering Behavior of ZrB2-HfB2 Ultra High Temperature Composite

Journal of Advanced Materials in Engineering, 2015
In this study, ZrB2-HfB2 composite was produced by pressureless sintering method. MoSi2 B4C and SiC particles were used as reinforcement. ZrB2 powder was milled in planetary ball mill apparatus and then reinforcement particles were added to the milled ...
M. Mashhadi, A. Abdollahi, Z. Nasiri
doaj  

3D printing of ceramics: Advantages, challenges, applications, and perspectives

Journal of the American Ceramic Society, Volume 107, Issue 12, Page 7879-7920, December 2024.
Abstract 3D printing (3DP) technologies have transformed the processing of advanced ceramics for small‐scale and custom designs during the past three decades. Simple and complex parts are designed and manufactured using 3DP technologies for structural, piezoelectric, and biomedical applications.
Susmita Bose, Enver Koray Akdogan, Vamsi K. Balla, Sushant Ciliveri, Paolo Colombo, Giorgia Franchin, Nicholas Ku, Priya Kushram, Fangyong Niu, Joshua Pelz, Andrew Rosenberger, Ahmad Safari, Zachary Seeley, Rodney W. Trice, Lionel Vargas‐Gonzalez, Jeffrey P. Youngblood, Amit Bandyopadhyay   +16 more
wiley   +1 more source

Nano-crystalline ultra high temperature HfB2 and HfC powders and coatings using a sol-gel approach

, 2011
Nano-crystalline HfB2 and HfC powders have been synthesized through a simple sol-gel route by using inorganic precursors like hafnium (IV) chloride (HfCl4), boric acid (H3BO3) and phenolic resin as a source of hafnium, boron and carbon respectively.
J. Binner, J.G.P. Binner (7121612), A. Heaton (7126067), A. Heaton, B. Vaidhyanathan, Saranya Venugopal (7124624), A. Paul, Bala Vaidhyanathan (7121615), Peter M. Brown (7125803), Anish Paul (7124552), P. Brown, S. Venugopal   +11 more
core   +1 more source