a 2015

A LUMINESCENCE STUDY OF PLASMA TREATED ALUMINA POWDERS

MORÁVEK, Tomáš and Jozef RÁHEĽ

Basic information

Original name

A LUMINESCENCE STUDY OF PLASMA TREATED ALUMINA POWDERS

Authors

MORÁVEK, Tomáš and Jozef RÁHEĽ

Edition

Conference Frontiers in Material and Life Sciences: Creating life in 3D, 2015

Other information

Language

English

Type of outcome

Konferenční abstrakt

Field of Study

10305 Fluids and plasma physics

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

Organization unit

Faculty of Science

Keywords in English

alumina, DCSBD, thermoluminescence, sub-micron powder
Změněno: 30/11/2015 10:56, Mgr. Tomáš Morávek, Ph.D.

Abstract

V originále

The sintering of plasma pre-treated alumina sub-micron powders results in finer microstructure of final ceramics. This highly interesting and potentially useful result motivates us to study the microscopic changes on plasma treated alumina powders. In this paper we present the study of luminescence produced by thermally stimulated plasma treated alumina powders, to extend the portfolio of standard surface diagnostic tools specializing primarily at chemical and topological changes. We found that luminescence signal is exceedingly sensitive to plasma treatment. The comprehensive set of experiments implies that the emitted light is produced chiefly by the process of thermoluminescence. Hence the emitted light is the direct consequence of plasma assisted electron trapping in the material, rather than the outcome of chemical reactions.

Links

CZ.1.05/2.1.00/03.0086, interní kód MU
Name: CEPLANT - Regionální VaV centrum pro nízkonákladové plazmové a nanotechnologické povrchové úpravy
Investor: Ministry of Education, Youth and Sports of the CR, 2.1 Regional R&D Centres
GA13-24635S, research and development project
Name: Spektroskopické studium rekombinace povrchového náboje v dielektrických bariérových výbojích
Investor: Czech Science Foundation