Characterization of Laser Remelted Plasma-Sprayed Mo Coating on AISI 1020 Steel

S. S. Manjunatha, M. Manjaiah, S. Basavarajappa

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Plasma-sprayed molybdenum (Mo) coating was deposited on an AISI 1020 steel substrate. Laser remelting was used to eliminate the open pores and microcracks of the plasma-sprayed molybdenum coating. The quantitative investigation of porosity was carried out with the help of Biovis image analysis software. The microhardness was measured using a Vickers indenter. The influence of laser remelting on the wear volume loss of plasma-sprayed Mo was estimated by using a pin-on-disc wear test rig. The worn surface was characterized by scanning electron microscopy. The experimental results demonstrate that the porosity of the coating was decreased and microhardness was improved by laser remelting. The laser remelted plasma-sprayed Mo coating exhibits better wear resistance compared to the untreated plasma-sprayed Mo coating. It is concluded that laser remelting is a potential treatment for the plasma-sprayed coating. In this study, the laser remelted plasma-sprayed Mo coating exhibited of lowest porosity, higher hardness and better wear resistance.

Original languageEnglish
Pages (from-to)741-751
Number of pages11
JournalSilicon
Volume9
Issue number5
DOIs
Publication statusPublished - 01-09-2017

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Molybdenum
Steel
Remelting
Plasmas
Coatings
Lasers
Porosity
Microhardness
Wear resistance
Wear of materials
Sprayed coatings
Microcracks
Image analysis
Hardness
Scanning electron microscopy
Substrates

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

Cite this

Manjunatha, S. S. ; Manjaiah, M. ; Basavarajappa, S. / Characterization of Laser Remelted Plasma-Sprayed Mo Coating on AISI 1020 Steel. In: Silicon. 2017 ; Vol. 9, No. 5. pp. 741-751.
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Characterization of Laser Remelted Plasma-Sprayed Mo Coating on AISI 1020 Steel. / Manjunatha, S. S.; Manjaiah, M.; Basavarajappa, S.

In: Silicon, Vol. 9, No. 5, 01.09.2017, p. 741-751.

Research output: Contribution to journalArticle

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AB - Plasma-sprayed molybdenum (Mo) coating was deposited on an AISI 1020 steel substrate. Laser remelting was used to eliminate the open pores and microcracks of the plasma-sprayed molybdenum coating. The quantitative investigation of porosity was carried out with the help of Biovis image analysis software. The microhardness was measured using a Vickers indenter. The influence of laser remelting on the wear volume loss of plasma-sprayed Mo was estimated by using a pin-on-disc wear test rig. The worn surface was characterized by scanning electron microscopy. The experimental results demonstrate that the porosity of the coating was decreased and microhardness was improved by laser remelting. The laser remelted plasma-sprayed Mo coating exhibits better wear resistance compared to the untreated plasma-sprayed Mo coating. It is concluded that laser remelting is a potential treatment for the plasma-sprayed coating. In this study, the laser remelted plasma-sprayed Mo coating exhibited of lowest porosity, higher hardness and better wear resistance.

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