INVESTIGATION OF ATMOSPHERIC PRESSURE PLASMA SURFACE MODIFIED ALUMINIUM OXIDE NANOPOWDER BY THERMAL DESORPTION SPECTROSCOPY

DUGÁČEK, Ján, Lubomír PROKEŠ, Pavel SŤAHEL, Jozef RÁHEĽ and Martina ILČÍKOVÁ. INVESTIGATION OF ATMOSPHERIC PRESSURE PLASMA SURFACE MODIFIED ALUMINIUM OXIDE NANOPOWDER BY THERMAL DESORPTION SPECTROSCOPY. Online. In 10TH ANNIVERSARY INTERNATIONAL CONFERENCE ON NANOMATERIALS - RESEARCH & APPLICATION (NANOCON 2018 (R)). OSTRAVA: TANGER LTD, 2019, p. 682-687. ISBN 978-80-87294-89-5.

Basic information

• Original name: INVESTIGATION OF ATMOSPHERIC PRESSURE PLASMA SURFACE MODIFIED ALUMINIUM OXIDE NANOPOWDER BY THERMAL DESORPTION SPECTROSCOPY
• Authors: DUGÁČEK, Ján (703 Slovakia, guarantor, belonging to the institution), Lubomír PROKEŠ (203 Czech Republic, belonging to the institution), Pavel SŤAHEL (203 Czech Republic, belonging to the institution), Jozef RÁHEĽ (703 Slovakia, belonging to the institution) and Martina ILČÍKOVÁ (703 Slovakia, belonging to the institution).
• Edition: OSTRAVA, 10TH ANNIVERSARY INTERNATIONAL CONFERENCE ON NANOMATERIALS - RESEARCH & APPLICATION (NANOCON 2018 (R)), p. 682-687, 6 pp. 2019.
• Publisher: TANGER LTD

Other information

• Original language: English
• Type of outcome: Proceedings paper
• Field of Study: 21000 2.10 Nano-technology
• Confidentiality degree: is not subject to a state or trade secret
• Publication form: electronic version available online
• WWW: URL
• RIV identification code: RIV/00216224:14310/19:00108249
• Organization unit: Faculty of Science
• ISBN: 978-80-87294-89-5
• UT WoS: 000513131900117
• Keywords in English: Alumina; sintering; electrophoretic method; plasma treatment; Thermal Desorption Spectroscopy
• Tags: rivok
• Tags: International impact, Reviewed

Abstract

Aluminium oxide nanopowder is used for sintering into ceramic materials with attractive mechanical properties. The simplest and most common sintering methods are wet methods during which the nanopowder is dispersed in a liquid. High surface energy increases the quality of the sintered material. Atmospheric pressure plasma is known improve its wetting properties and the quality of ceramic sintered using the electrophoretic method. However, polarisation abnormalities during the deposition suggested an addition of negatively charged species on the powder's surface during the treatment, probably NOX molecules. To verify this hypothesis, we have used the Thermal Desorption Spectroscopy on the treated and the untreated nanopowder to study the changes that occurred during the treatment. We have found that a large number of additional NO, NO2, CO2 and hydroxyl were attached to the surface, at least some of them were grafted rather than adsorbed. This provided additional evidence that the abnormalities were caused by NOX molecules on the surface.

Links

• ED2.1.00/03.0086, research and development project: Name: Regionální VaV centrum pro nízkonákladové plazmové a nanotechnologické povrchové úpravy
• GA17-05620S, research and development project: Name: Fyzikální aktivace povrchu keramických částic jako nástroj pro zlepšení vlastností jemnozrnné pokročilé keramiky (Acronym: KeramAktiv)

Investor: Czech Science Foundation

• LO1411, research and development project: Name: Rozvoj centra pro nízkonákladové plazmové a nanotechnologické povrchové úpravy (Acronym: CEPLANT plus)

Investor: Ministry of Education, Youth and Sports of the CR