Hollow alumina microspheres prepared by RF thermal plasma

Zoltán Károly, J. Szépvölgyi

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

Thermal plasma treatment of ceramic particles of different shape makes them spherical. The spherical particles are hollow or porous under certain experimental conditions. The objective of the present work was to investigate how the water content and porosity of raw materials and the composition of the gas phase influence the size of the hollows. We concluded that the porous structure is the major factor contributing to the formation of hollow spheres, while high initial water content is not a prerequisite for the formation of internal cavities.

Original languageEnglish
Pages (from-to)211-215
Number of pages5
JournalPowder Technology
Volume132
Issue number2-3
DOIs
Publication statusPublished - Jun 24 2003

Fingerprint

Plasma Gases
Aluminum Oxide
thermal plasmas
Microspheres
Water content
hollow
Alumina
aluminum oxides
Plasmas
moisture content
Raw materials
Porosity
Gases
Chemical analysis
ceramics
vapor phases
porosity
cavities
Hot Temperature

Keywords

  • Alumina powder
  • Hollow microspheres
  • Microballoons
  • Thermal plasma

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry

Cite this

Hollow alumina microspheres prepared by RF thermal plasma. / Károly, Zoltán; Szépvölgyi, J.

In: Powder Technology, Vol. 132, No. 2-3, 24.06.2003, p. 211-215.

Research output: Contribution to journalArticle

Károly, Zoltán ; Szépvölgyi, J. / Hollow alumina microspheres prepared by RF thermal plasma. In: Powder Technology. 2003 ; Vol. 132, No. 2-3. pp. 211-215.
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