LOCAL MECHANICAL PROPERTIES OF ATMOSPHERIC SPRAYED MOLYBDENUM COATINGS DEPOSITED WITH CASCADED PLASMA TORCH

Authors

  • Jakub Antoš Research and Testing Institute, Tylova 1581/46 , 301 00 Plzen, Czech Republic
  • Petra Šulcová Research and Testing Institute, Tylova 1581/46 , 301 00 Plzen, Czech Republic
  • Kateřina Lencová Research and Testing Institute, Tylova 1581/46 , 301 00 Plzen, Czech Republic
  • Šárka Houdková Research and Testing Institute, Tylova 1581/46 , 301 00 Plzen, Czech Republic
  • Josef Duliškovic Research and Testing Institute, Tylova 1581/46 , 301 00 Plzen, Czech Republic
  • Jan Hajšman University of West Bohemia, Univerzitní 8, 306 14 Plzen, Czech Republic
  • Karolína Burdová University of West Bohemia, Univerzitní 8, 306 14 Plzen, Czech Republic
  • Antonín Račický University of West Bohemia, Univerzitní 8, 306 14 Plzen, Czech Republic

DOI:

https://doi.org/10.14311/APP.2020.27.0032

Keywords:

Atmospheric plasma spraying, cascaded plasma torch, mechanical and tribological properties, molybdenum coatings

Abstract

Increasing interest for industrial use of thermally sprayed coatings leads to development in most thermal spraying technologies, including atmospheric plasma spraying (APS). The latest cascaded torch SinplexPro from Oerlikon Metco incorporates the efficiency advantages of cascaded arc technology into a single-cathode spray gun. It leads to more stable plasma arc across a wide range of gas flows, mixtures and pressures and also highly increases powder throughput. Thermal sprayed molybdenum coatings are widely used for improving wear resistance and sliding properties in many mechanical applications. Results of pure molybdenum coatings sprayed with cascaded plasma torch are not yet fully investigated. In this paper, mechanical properties of atmospheric plasma sprayed molybdenum coatings on steel (S235) substrate are evaluated. Optimization of spraying parameters for spherical Mo powder sprayed by cascaded plasma torch SinplexPro is carried out and the influence on final microstructure, mechanical and tribological properties of molybdenum coatings is analysed.

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Published

2020-06-11

Issue

Vol. 27 (2020): Proceedings of the 14th International Conference on Local Mechanical Properties - LMP 2019

Section

Articles

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