Results 61 to 70 of about 780 (184)

Melting point of group IV and V transition metal diborides

Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.
The environmental conical nozzle levitator system enables cooling trace experiments above 4000 K. These cooling trace experiments were used to determine the melting points through observation of thermal arrest of group IV and V transition metal diborides (TiB2, Tm = 3313 ± 33 K; ZrB2, Tm = 3404 ± 38 K; HfB2, Tm = 3529 ± 33 K; and TaB2, Tm = 3284 ± 10 K;
Fox Thorpe, Elizabeth Sobalvarro Converse, Jesus Rivera, William Rosenberg, Scott J. McCormack   +4 more
wiley   +1 more source

In situ synthesis and formation mechanism of ZrC and ZrB2 by combustion synthesis from the Co-Zr-B4C system

Journal of Asian Ceramic Societies, 2015
ZrC-ZrB2-based composites were prepared by combustion synthesis (CS) reaction from 10 wt.% to 50 wt.% Co-Zr-B4C powder mixtures. With increasing Co contents, the particle sizes of near-spherical ZrC and platelet-like ZrB2 decreased from 1 μm to 0.5 μm ...
Mengxian Zhang, Yanqiu Huo, Min Huang, Yihang Fang, Binglin Zou   +4 more
doaj   +1 more source

Fabrication of continuous fiber reinforced ceramic matrix mini‐composites via direct ink writing

Journal of the American Ceramic Society, Volume 108, Issue 12, December 2025.
This article explores innovative fabrication methods for continuous fiber‐reinforced ceramic matrix composites (CMCs) using direct ink writing (DIW). It compares two approaches—an all‐in‐one setup and a coaxial design—evaluating their advantages and challenges.
Anna De Marzi, Filippo Da Rin Betta, Giorgia Franchin, Ryan M. Seabright, Charles J. Footer, Paolo Colombo   +5 more
wiley   +1 more source

Enhancement mechanism of contact mechanical properties of laser powder bed fused FeNiCrCoAl0.5-X% ZrB2 coatings: experiments and molecular dynamics simulations

Journal of Materials Research and Technology
In this paper, experiments and molecular dynamics (MD) simulations are used to investigate the mechanisms that improve the contact mechanical properties of FeNiCrCoAl0.5-X% ZrB2 coatings (X = 0, 10, 20, 30) prepared by laser powder bed fusion ...
Yang Chen, Pengliang Hou, Xi Wang, Hanpeng Gao, Yunyun Song, Liang Li, Wanfeng Sun   +6 more
doaj   +1 more source

Effect of WC addition on the mechanical properties and oxidation resistance of ZrB2/SiC‐based UHTCMCs

International Journal of Applied Ceramic Technology, Volume 22, Issue 6, November/December 2025.
Abstract The sintering behavior, mechanical properties, and oxidation resistance of carbon fiber reinforced ZrB2/SiC/WC composites were investigated. Sintering was carried out between 1800 and 2000°C via hot pressing at 40 MPa. WC was completely consumed in the process, and the resulting microstructure was characterized by the formation of Zr1−xWxC ...
Antonio Vinci, Matteo Mor, Luca Zoli, Diletta Sciti   +3 more
wiley   +1 more source

Microstructure and strengthening mechanism of grain boundary strengthened W-ZrB2 alloy

Journal of Materials Research and Technology, 2020
Using the unique properties of ultra-high temperature ceramic material, a new kind W-ZrB2 alloy was prepared. Compared with pure tungsten (PW), the mechanical properties of W-ZrB2 alloy were obviously improved.
Yijia Wang, Qingzhi Yan
doaj   +1 more source

Combustion synthesis of ultra‐high temperature ceramics: Review

International Journal of Applied Ceramic Technology, Volume 22, Issue 6, November/December 2025.
Abstract Novel and future‐oriented aerospace, energy, transportation, and other industrial technologies require materials capable of operating at temperatures above 2000°C. Ultra‐high temperature ceramic materials (UHTCs), based on carbides, borides, carbonitrides, and nitrides of transition metals—many with melting points exceeding 3000°C—possess the ...
Alexander S. Mukasyan, Alexander S. Rogachev   +1 more
wiley   +1 more source

Fabrication, Microstructural Characterization, and Ablation Behavior of a Novel 3D Orthogonal Woven C/C-SiC-ZrB2 Composite Through I-CVI, SI, and LSI Combined Processes [PDF]

Iranian Journal of Materials Science and Engineering
This paper presents the novel fabrication method of a three-dimensional orthogonally woven (3DW) C/C-SiC-ZrB2 composite and the effects of ZrB2 and SiC particles on microstructure and the ablation behavior of the C/C–SiC–ZrB2 composite are studied.
Amin Rezaei Chekani, malek naderi, reza aliasgarian, yousef Safaei-Naeini   +3 more
doaj  

ZrB2-SiC as a protective coating for C/SiC composites: Effect of high temperature oxidation on thermal shock property and protection mechanism

Journal of Asian Ceramic Societies, 2016
ZrB2-SiC coating was prepared on C/SiC composites surface by slurry method, and then the thermal fatigue behavior of ZrB2-SiC coated C/SiC composites was studied. The composition of the coating layers was characterized by XRD, SEM and EDS.
Xiang Yang, Cao Feng, Wang Qing
doaj   +1 more source

The effect of B4C particle size on the reaction process and product in the Cu–Zr–B4C system

Journal of Asian Ceramic Societies, 2015
ZrC and ZrB2 were prepared by self-propagating high-temperature synthesis in a Cu–Zr–B4C system. We explored the influence of B4C particle size on the reaction process, phase composition and microstructure of the products.
Mengxian Zhang, Yanqiu Huo, Min Huang, Yihang Fang, Guping Wang   +4 more
doaj   +1 more source