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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

park plasma sintering and electric conductivity of anatase TiO2 nanoceramic

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Author(s):
Roca, Roman Alvarez [1] ; Londono Badillo, Fernando Andres [2] ; Eiras, Jose Antonio [3]
Total Authors: 3
Affiliation:
[1] Univ Fed Sao Carlos, CDMF LIEC Chem Dept, Sao Carlos, SP - Brazil
[2] Univ Antioquia, Inst Fis, Grp Sci Instrumentat & Microelect, Medellin - Colombia
[3] Univ Fed Sao Carlos, Phys Dept, Grp Ferro Mat, Sao Carlos, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS; v. 33, n. 7, p. 4375-4387, MAR 2022.
Web of Science Citations: 0
Abstract

We investigated the densification and electric conductivity in uncommon ultra-fine-grained anatase TiO2 nanoceramics. These materials were prepared by Spark Plasma Sintering (SPS) at 850 degrees C and exhibited a relative density of 95% and mean grain size of 57 nm. The structural TiO2 anatase phase and microstructural characteristics were determined by XRD and SEM analyses, respectively. A main densification mechanism was proposed based on the grain size-relative density relationship, where an effective pinning effect of nanopores on agglomerates was suggested. Measurements of electric impedance and modulus revealed the influence of SPS conditions on electrical properties. The conductivity relaxation and activation energy in such dense anatase TiO2 nanoceramics were also examined. (AU)

FAPESP's process: 17/19548-7 - CDMF - Center for the Development of Functional Materials
Grantee:Román Alvarez Roca
Support Opportunities: Scholarships in Brazil - Post-Doctoral