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Research on Ceramic Composite in Asia

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Inorganic Chemistry".

Deadline for manuscript submissions: closed (31 August 2021) | Viewed by 2387

Special Issue Editor


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Guest Editor
Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, China
Interests: thermoelectric material; carbon nanoparticles; biofuels; green chemistry; organic chemistry

Special Issue Information

Dear Colleagues,

Ceramic matrix composites (CMCs), also called muhiphase composite ceramics or diphase ceramics, are a new type of material that introduces a second-phase material into the ceramic matrix to enhance and improve its performance in terms of, e.g., strength, toughness, and creep. New ceramic materials usually include fiber (or whisker) toughened ceramic matrix composites, heterogeneous particle dispersion and strengthening composite ceramics, in situ growth composite ceramics, functionally graded composite ceramics, and nanoceramic composites, which have high temperature resistance, wear resistance, high temperature creep resistance, thermal conductivity, a low coefficient of thermal expansion, chemical corrosion resistance, high strength, and high hardness and medium.

Recently, significant progresses in ceramic matrix composite research have been made within Asia. In this Special Issue on “Research on Ceramic Composites in Asia”, the focus is on fundamental and novel recent advancements relating to ceramic composites in Asia. Papers on recent and innovative research are welcome.

Prof. Dr. Hong Wang
Guest Editor

Manuscript Submission Information

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Keywords

  • ceramic matrix composite
  • ceramic nanocomposite
  • toughening technology
  • mechanical research
  • manufacturing process
  • interface
  • development trend
  • fabrication

Published Papers (1 paper)

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Research

13 pages, 4291 KiB  
Article
Influences of Sr2+ Doping on Microstructure, Giant Dielectric Behavior, and Non-Ohmic Properties of CaCu3Ti4O12/CaTiO3 Ceramic Composites
by Jutapol Jumpatam, Bundit Putasaeng, Narong Chanlek and Prasit Thongbai
Molecules 2021, 26(7), 1994; https://0-doi-org.brum.beds.ac.uk/10.3390/molecules26071994 - 01 Apr 2021
Cited by 13 | Viewed by 1984
Abstract
The microstructure, dielectric response, and nonlinear current-voltage properties of Sr2+-doped CaCu3Ti4O12/CaTiO3 (CCTO/CTO) ceramic composites, which were prepared by a solid-state reaction method using a single step from the starting nominal composition of CCTO/CTO/xSrO, were [...] Read more.
The microstructure, dielectric response, and nonlinear current-voltage properties of Sr2+-doped CaCu3Ti4O12/CaTiO3 (CCTO/CTO) ceramic composites, which were prepared by a solid-state reaction method using a single step from the starting nominal composition of CCTO/CTO/xSrO, were investigated. The CCTO and CTO phases were detected in the X-ray diffraction patterns. The lattice parameter increased with increasing Sr2+ doping concentration. The phase compositions of CCTO and CTO were confirmed by energy-dispersive X-ray spectroscopy with elemental mapping in the sintered ceramics. It can be confirmed that most of the Sr2+ ions substituted into the CTO phase, while some minor portion substituted into the CCTO phase. Furthermore, small segregation of Cu-rich was observed along the grain boundaries. The dielectric permittivity of the CCTO/CTO composite slightly decreased by doping with Sr2+, while the loss tangent was greatly reduced. Furthermore, the dielectric properties in a high-temperature range of the Sr2+-doped CCTO/CTO ceramic composites can be improved. Interestingly, the nonlinear electrical properties of the Sr2+-doped CCTO/CTO ceramic composites were significantly enhanced. The improved dielectric and nonlinear electrical properties of the Sr2+-doped CCTO/CTO ceramic composites were explained by the enhancement of the electrical properties of the internal interfaces. Full article
(This article belongs to the Special Issue Research on Ceramic Composite in Asia)
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