Journal of Advanced Ceramics

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Synthesis of nearly spherical AlN particles by an in-situ nitriding combustion route
Journal of Advanced Ceramics - - 2021
Zhilei Wei, Li Kang, Bangzhi Ge, Chaowei Guo, Hongyan Xia, Yajie Guo, Zhongqi Shi
AbstractSpherical AlN powders with micrometer size have attracted great attention owing to their good fluidity and dispersity. However, the industrial preparation methods usually require high temperature and long soaking time, which lead to the high cost and limit the wide application of the products. Herein, nearly spherical AlN particles with the average size of ...... hiện toàn bộ
Single-source-precursor synthesis and phase evolution of SiC-TaC-C ceramic nanocomposites containing core-shell structured TaC@C nanoparticles
Journal of Advanced Ceramics - - 2020
Zhaoju Yu, Yujing Yang, Kangwei Mao, Yao Feng, Qingbo Wen, Ralf Riedel
AbstractA novel single-source-precursor for SiC-TaC-C nanocomposites was successfully synthesized by the chemical reaction between a polycarbosilane (allylhydridopolycarbosilane, AHPCS) and tantalum(V) chloride (TaCl5), which was confirmed by Fourier transform infrared spectra (FTIR) measurement. After pyrolysis of the resultant single-source-p...... hiện toàn bộ
Pomegranate-type Si/C anode with SiC taped, well-dispersed tiny Si particles for lithium-ion batteries
Journal of Advanced Ceramics - Tập 10 Số 5 - Trang 1129-1139 - 2021
Pengfei Wu, Benyang Shi, Huibin Tu, Chaozhong Guo, Anhua Liu, Yan Guan, Zhaoju Yu
AbstractSevere volume expansion and inherently poor lithium ion transmission are two major problems of silicon anodes. To address these issues, we proposed a pomegranate-type Si/C composite anode with highly dispersed tiny silicon particles as the core assisted by small amount of SiC. Skillfully exploiting the high heat from magnesiothermic reduction, SiC can assis...... hiện toàn bộ
Edge chipping resistance of ceramics: Problems of test method
Journal of Advanced Ceramics - Tập 2 - Trang 370-377 - 2013
George A. Gogotsi
An unconventional method for determining the fracture resistance of brittle materials is discussed. This method employs a conical indenter to chip the rectangular edge of the specimen. Particular features of the method are the use of small specimens and the evaluation of the resistance of materials to the nucleation, initiation and propagation of a crack. It is shown that this method is somewhat s...... hiện toàn bộ
A new insight into structural complexity in ferroelectric ceramics
Journal of Advanced Ceramics - Tập 6 - Trang 262-268 - 2017
Weidong Zeng, Qingning Li, Changrong Zhou, Jiwen Xu, Changlai Yuan, Guohua Chen
The structure of the ferroelectrics has been widely studied in order to pursuing the origin of high electromechanical responses. However, some experiments on structure of ferroelectrics have yielded different results. Here, we report that the controversial phase structure is due to the adaptive diffraction of nanodomains which hides the natural crystal structure, and the electric-field-induced pha...... hiện toàn bộ
Controlling calcium and phosphate ion release of 3D printed bioactive ceramic scaffolds: An in vitro study
Journal of Advanced Ceramics - Tập 6 - Trang 157-164 - 2017
Lukasz Witek, Yang Shi, James Smay
This paper characterizes in an in vitro setting the release of calcium (Ca) and phosphate (PO4) of 3D printed bioactive ceramic scaffold prepared from extrudable paste containing hydroxyapatite and β-tricalcium phosphate (β-TCP). Hydroxyapatite and β-TCP were calcined at 800 °C for 11 h, fabricated into four experimental groups (100% HA, 100% β-TCP, 15%/85% HA/β-TCP, and 15%/85% HA/β-TCP (design))...... hiện toàn bộ
Fabrication and microstructure evolution of Csf/ZrB2-SiC composites via direct ink writing and reactive melt infiltration
Journal of Advanced Ceramics - Tập 10 - Trang 1371-1380 - 2021
Feiyan Cai, Jun Lu, Chunjing Liao, Yusheng Ding, Haijun Zhou, Shaoming Dong, Bowen Chen, Dewei Ni, Youlin Jiang, Xuegang Zou
Fiber damage and uniform interphase preparation are the main challenges in conventional short fiber reinforced ceramic matrix composites. In this work, we develop a novel processing route in fabrication of short carbon fiber reinforced ZrB2-SiC composites (Csf/ZrB2-SiC) overcoming the above two issues. At first, Csf preforms with oriented designation and uniform PyC/SiC interphase are fabricated v...... hiện toàn bộ
Experimental and FEM based investigation of the influence of the deposition temperature on the mechanical properties of SiC coatings
Journal of Advanced Ceramics - Tập 10 - Trang 139-151 - 2021
Thomas Schlech, Siegfried Horn, Charles Wijayawardhana, Arash Rashidi
Scanning electron microscopy shows that the microstructure, in particular the overall grain size, of chemical vapor deposited silicon carbide coatings depends on the deposition temperature. So far, the influence of the microstructure on the mechanical properties of such coatings is not well described in literature. To investigate the influence of the deposition temperature on the mechanical proper...... hiện toàn bộ
Enhanced thermal shock and oxidation resistance of Si2BC3N ceramics through MWCNTs incorporation
Journal of Advanced Ceramics - Tập 7 Số 3 - Trang 276-288 - 2018
Ning Liao, Dechang Jia, Zhihua Yang, Yu Zhou, Yawei Li
Abstract Multi-walled carbon nanotubes (MWCNTs) reinforced Si2BC3N ceramics were prepared through mechanical alloying (MA) and following spark plasma sintering (SPS). The thermal shock resistance of Si2BC3N ceramics was evaluated comparatively through ice water quenching t...... hiện toàn bộ
Microstructures and microwave dielectric properties of (Ba1−xSrx)4(Sm0.4Nd0.6)28/3Ti18O54 solid solutions
Journal of Advanced Ceramics - Tập 6 - Trang 50-58 - 2017
Xianpei Huang, Xinyu Liu, Fei Liu, Changlai Yuan, Jingjing Qu, Jiwen Xu, Changrong Zhou, Guohua Chen
(Ba1−xSrx)4(Sm0.4Nd0.6)28/3Ti18O54 (x = 0.02, 0.04, 0.06, 0.08, 0.1) solid solutions were prepared by the conventional solid-state reaction process. It was found that (Ba1−xSrx)4(Sm0.4Nd0.6)28/3Ti18O54 ceramics are fully composed of BaSm2Ti4O12 and BaNd2Ti5O14 phases for all the compositions. The increasing x value (0.02 ≤ x ≤ 0.1) in ((Ba1−xSrx)4(Sm0.4Nd0.6)28/3Ti18O54 ceramics can not only obtai...... hiện toàn bộ
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