Title: Rapid evaluation of temperature distribution of coatings during atmospheric plasma sprayed process

Authors: Ch.I. Sarafoglou; E.E. Stathatos; D.I. Pantelis; G-C. Vosniakos

Addresses: Shipbuilding Technology Laboratory, School of Naval Architecture and Marine Engineering, National Technical University of Athens, Herron Polytehneiou 9, Zografou, GR-15780, Athens, Greece ' Manufacturing Technology Division, School of Mechanical Engineering, National Technical University of Athens, Herron Polytehneiou 9, Zografou, GR-15780, Athens, Greece ' Shipbuilding Technology Laboratory, School of Naval Architecture and Marine Engineering, National Technical University of Athens, Herron Polytehneiou 9, Zografou, GR-15780, Athens, Greece ' Manufacturing Technology Division, School of Mechanical Engineering, National Technical University of Athens, Herron Polytehneiou 9, Zografou, GR-15780, Athens, Greece

Abstract: This study presents the experimental results of coating AISI 1045 steel substrate by low alloyed carbon steel powder using atmospheric plasma spraying (APS). Thermocouples were used to monitor the temperature history at specified positions during the spraying process. A simplified thermal finite element model of APS coating is presented. The transient temperature field is calculated first. An appropriate numerical filter implementing the thermal time response of the thermocouple is created and applied to the raw FEM results. Agreement between experiment and numerical model for temperature were deemed promising despite the simplifications adopted in the numerical model.

Keywords: atmospheric plasma spraying; AISI 1045 steel; low alloyed carbon steel; thermal sprayed coatings; temperature measurements; thermal modelling; thermocouples; thermal time response; temperature distribution; rapid evaluation; surface science; finite element method; FEM; microstructure; adhesion; cohesion; residual stress.

DOI: 10.1504/IJSURFSE.2015.067042

International Journal of Surface Science and Engineering, 2015 Vol.9 No.1, pp.96 - 106

Received: 08 Jun 2013
Accepted: 03 Feb 2014
Published online: 24 Jan 2015 *

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