Evaluation of the suitability of fly ash powder for atmospheric plasma spray

Mohd Moesli Muhammad, Azman Jalar @ Jalil, Roslinda Shamsudin, Mahdi Che Isa

Research output: Contribution to journalArticle

Abstract

This study describes the potential of sieved fly ash powders to be used as feed stock materials in atmospheric plasma spray. The analyses that were carried out were particle size distribution (PSD), chemical composition, morphology and flowability. The PSD analysis showed that most of the fly ash powders were fine particles of less than 63 μm. The chemical analysis showed that the main components of the fly ash powders were iron, silica, calcium, aluminium and potassium. The morphological analysis showed that the coarse and medium sized fly ash particles consist of irregular and spherical shapes, whereas the fine particles were dominated by spherical shapes. The flowability study showed that the medium sized particles (63-100 μm) are suitable to be used as plasma spray powders due to free flowing and no blockages within the powder injector during the spraying process. On the other hand, the fine particles failed to be delivered within the plasma spray pipeline system due to powder agglomeration.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalDefence S and T Technical Bulletin
Volume8
Issue number1
Publication statusPublished - 2015

Fingerprint

Fly ash
Plasmas
Powders
Particle size analysis
Iron powder
Spraying
Chemical analysis
Potassium
Calcium
Agglomeration
Pipelines
Silica
Aluminum

Keywords

  • Atmospheric plasma spray
  • Flowability
  • Fly ash
  • Particle size distribution (PSD)
  • Powder agglomeration

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Evaluation of the suitability of fly ash powder for atmospheric plasma spray. / Muhammad, Mohd Moesli; Jalar @ Jalil, Azman; Shamsudin, Roslinda; Isa, Mahdi Che.

In: Defence S and T Technical Bulletin, Vol. 8, No. 1, 2015, p. 1-8.

Research output: Contribution to journalArticle

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