Gas atomized thermal spray powders of various metals and alloys

Juha Lagerbom, Tapio Ritvonen, Tomi Suhonen, Tommi Varis

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Thermal spraying is a group of methods which are used to produce for example wear and corrosion resistant coatings on different surfaces. Fine powder of material is fed to high temperature gas flow. The particles accelerate, partially melt and hit to the surface to form a coating. Thermal spraying sets some requirements for the powder. The powder should be able to be fed with constant feed rate and the particle size distribution should be quite narrow to achieve even melt fraction of the particles. For metal alloys gas atomization is the optimum method to produce thermal spray powders. In this paper, results of some powders prepared by laboratory scale medium/high pressure gas atomizer are discussed. Motivation of this work was to study if thermal spray powders could be atomized in suitable particle size without major post processing. Copper and different stainless steels were atomized. Characterization of particle size and morphology were tested. Different aspects of atomization and post processing to increase thermal spray powder quality are discussed.
Original languageEnglish
Title of host publicationEuro PM2011 Congress Proceedings
PublisherEuropean Power Metallurgy Association EPMA
Number of pages6
ISBN (Electronic)978-1-899072-23-1
Publication statusPublished - 2011
MoE publication typeA4 Article in a conference publication
EventEuro PM2011 Congress & Exhibition - Barcelona, Spain
Duration: 9 Oct 201112 Oct 2011

Conference

ConferenceEuro PM2011 Congress & Exhibition
CountrySpain
CityBarcelona
Period9/10/1112/10/11

Fingerprint

Powders
Metals
Gases
Thermal spraying
Atomization
Particle size
Coatings
Atomizers
Processing
Hot Temperature
Particle size analysis
Flow of gases
Stainless steel
Wear of materials
Corrosion
Copper
Temperature

Keywords

  • ProperTune

Cite this

Lagerbom, J., Ritvonen, T., Suhonen, T., & Varis, T. (2011). Gas atomized thermal spray powders of various metals and alloys. In Euro PM2011 Congress Proceedings European Power Metallurgy Association EPMA.
Lagerbom, Juha ; Ritvonen, Tapio ; Suhonen, Tomi ; Varis, Tommi. / Gas atomized thermal spray powders of various metals and alloys. Euro PM2011 Congress Proceedings. European Power Metallurgy Association EPMA, 2011.
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Lagerbom, J, Ritvonen, T, Suhonen, T & Varis, T 2011, Gas atomized thermal spray powders of various metals and alloys. in Euro PM2011 Congress Proceedings. European Power Metallurgy Association EPMA, Euro PM2011 Congress & Exhibition, Barcelona, Spain, 9/10/11.

Gas atomized thermal spray powders of various metals and alloys. / Lagerbom, Juha; Ritvonen, Tapio; Suhonen, Tomi; Varis, Tommi.

Euro PM2011 Congress Proceedings. European Power Metallurgy Association EPMA, 2011.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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AB - Thermal spraying is a group of methods which are used to produce for example wear and corrosion resistant coatings on different surfaces. Fine powder of material is fed to high temperature gas flow. The particles accelerate, partially melt and hit to the surface to form a coating. Thermal spraying sets some requirements for the powder. The powder should be able to be fed with constant feed rate and the particle size distribution should be quite narrow to achieve even melt fraction of the particles. For metal alloys gas atomization is the optimum method to produce thermal spray powders. In this paper, results of some powders prepared by laboratory scale medium/high pressure gas atomizer are discussed. Motivation of this work was to study if thermal spray powders could be atomized in suitable particle size without major post processing. Copper and different stainless steels were atomized. Characterization of particle size and morphology were tested. Different aspects of atomization and post processing to increase thermal spray powder quality are discussed.

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Lagerbom J, Ritvonen T, Suhonen T, Varis T. Gas atomized thermal spray powders of various metals and alloys. In Euro PM2011 Congress Proceedings. European Power Metallurgy Association EPMA. 2011