Influence of texture on DC conductivity and dimensional changes of kaolin and illitic clay

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10406655" target="_blank" >RIV/00216208:11320/19:10406655 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=VLYNECAsis" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=VLYNECAsis</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ceramint.2018.10.162" target="_blank" >10.1016/j.ceramint.2018.10.162</a>

Result language

angličtina

Original language name

Influence of texture on DC conductivity and dimensional changes of kaolin and illitic clay

Original language description

The influence of the technological texture on the DC conductivity of an illitic clay and kaolin was studied. Textured samples were prepared by layering a wet plastic mass made from distilled water and clay. Anisotropy of the samples was assessed by studying the DC conductivity and dimensional changes as functions of temperature in parallel and perpendicular directions to the basal planes of illite and kaolinite crystals. It was found that the shrinkage of the samples after firing is more significant in the direction perpendicular to the basal planes. The DC conductivity both in the illitic clay and kaolin is higher parallel to the basal planes of illite or kaolinite crystals than perpendicular to them. In both materials, the dominant charge carriers are K+ and Na+ ions, complemented by H+ and OH- ions during the removal of the physically bound water and dehydroxylation. The influence of the texture remains observable in the kaolin samples even after a high-temperature treatment (1200 degrees C), contrary to the illitic clay where this influence is suppressed by the high amount of the glassy phase (similar to 80 mass %) after the thermal treatment at temperatures above 1000 degrees C. Compared to the illitic clay, the influence of the technological texture on the DC conductivity of kaolin is more significant.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

<a href="/en/project/GA17-16772S" target="_blank" >GA17-16772S: Optimization of mechanical, thermophysical and electrical properties of novel illite-based ceramic materials</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Ceramics International

ISSN

0272-8842

e-ISSN

—

Volume of the periodical

45

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

7

Pages from-to

2425-2431

UT code for WoS article

000453492800118

EID of the result in the Scopus database

2-s2.0-85055522293