Table of Contents

Ceramics, Volume 1, Issue 1 (June 2018)

  • Issues are regarded as officially published after their release is announced to the table of contents alert mailing list.
  • You may sign up for e-mail alerts to receive table of contents of newly released issues.
  • PDF is the official format for papers published in both, html and pdf forms. To view the papers in pdf format, click on the "PDF Full-text" link, and use the free Adobe Readerexternal link to open them.
View options order results:
result details:
Displaying articles 1-2
Export citation of selected articles as:

Editorial

Jump to: Research

Open AccessEditorial Welcome to Ceramics: A New Open Access Scientific Journal on Ceramics Science and Engineering
Ceramics 2018, 1(1), 1; doi:10.3390/ceramics1010001
Received: 16 October 2017 / Accepted: 16 October 2017 / Published: 20 October 2017
PDF Full-text (140 KB) | HTML Full-text | XML Full-text
Abstract
The word ceramics comes from the Greek word keramikos, which means pottery and corresponds to a very old human activity. Indeed, one of the oldest materials fabricated in the world is ceramic pottery [...]
Full article

Research

Jump to: Editorial

Open AccessArticle Electrical Behavior and Microstructural Features of Electric Field-Assisted and Conventionally Sintered 3 mol% Yttria-Stabilized Zirconia
Ceramics 2018, 1(1), 2; doi:10.3390/ceramics1010002
Received: 28 December 2017 / Revised: 10 February 2018 / Accepted: 18 February 2018 / Published: 21 February 2018
PDF Full-text (3113 KB) | HTML Full-text | XML Full-text
Abstract
ZrO2: 3 mol% Y2O3 (3YSZ) polycrystalline pellets were sintered at 1400 °C and by applying an alternating current (AC) electric field at 1000 °C. An alumina sample holder with platinum wires for connecting the sample to a power
[...] Read more.
ZrO2: 3 mol% Y2O3 (3YSZ) polycrystalline pellets were sintered at 1400 °C and by applying an alternating current (AC) electric field at 1000 °C. An alumina sample holder with platinum wires for connecting the sample to a power supply was designed for the electric field-assisted sintering experiments. The apparent density was evaluated with the Archimedes technique, the grain size distribution by analysis of scanning electron microscopy images, and the electrical behavior by the impedance spectroscopy technique. Sintering with the application of AC electric fields to 3YSZ enhances its ionic conductivity. An explanation is proposed, based on the dissolution back to the bulk of chemical species, which are depleted at the grain boundaries, leading to an increase in the oxygen vacancy concentration. For the enhancement of the grain boundary conductivity, an explanation is given based on the diminution of the concentration of depleted chemical species, which migrate to the bulk. This migration leads to a decrease of the potential barrier of the space charge region, known to be responsible for blocking the oxide ions through the intergranular region. Moreover, the heterogeneity of the distribution of the grain sizes is ascribed to the skin effect, the tendency of the AC current density to be largest near the surface, decreasing towards the bulk. Full article
(This article belongs to the Special Issue Novel Processing Routes of Ceramics for Functional Applications)
Figures

Figure 1

Back to Top