Influence of agglomeration and contamination in the course of amorphous powder grinding on structure and microstructure of sintered mullite

Kurajica, Stanislav and Tkalčec, Emilija and Matijašić, Gordana and Ćurković, Lidija and Schauperl, Zdravko and Šipušić, Juraj and Mandić, Vilko (2011) Influence of agglomeration and contamination in the course of amorphous powder grinding on structure and microstructure of sintered mullite. = Influence of agglomeration and contamination in the course of amorphous powder grinding on structure and microstructure of sintered mullite. Croatica Chemica Acta, 84 (1). pp. 63-71. ISSN 0011-1643. Vrsta rada: Original scientific paper. Kvartili JCR: Q3 (2011). .

[img]
Preview
Text
Dummy article.pdf - Draft Version Jezik dokumenta:English

Download (79kB) | Preview
Official URL: http://www.scopus.com/inward/record.url?eid=2-s2.0...

Abstract

The process of grinding of amorphous pre-mullite powder has been investigated. The powder has been obtained by sol-gel process followed by drying, calcination and wet milling in planetary ball mill for various periods. While particle size distributions shifts to finer size distributions as the grinding time increase, the specific surface area dependence on the grinding time shows complex behavior. This was attributed to the agglomeration in the course of calcinations partially promoted by slight re-esterification of the sample surface in the course of grinding. Mill wear debris has been observed in samples grinded for longer periods. The influence of particle size, re-esterification, agglomeration and contamination of samples on the mullite formation process, structure, sintering process and microstructure development, has been further investigated. Slight changes in samples phase composition, as well as mullite structure, and the great decrease of sintered body porosity with the duration of grinding have been observed.

Item Type: Article (Original scientific paper)
Keywords (Croatian): Grinding; Microstructure; Mullite; Sintering; Sol-gel process
Subjects: TECHNICAL SCIENCE
Divisions: 1000 Department of Materials > 1010 Chair of Materials and Tribology
Indexed in Web of Science: Yes
Indexed in Current Contents: Yes
Citations JCR: 2 (22.4.2015.)
Quartiles: Q3 (2011)
Citations SCOPUS: 2 (22.4.2015.)
Date Deposited: 22 Apr 2015 07:44
Last Modified: 22 Apr 2015 07:44
URI: http://repozitorij.fsb.hr/id/eprint/3816

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year