Title: Investigation of solid particle erosion behaviour of Fe-Cr alloy coating

Authors: Ratnesh Kumar Sharma; Randip Kumar Das; Shiv Ranjan Kumar

Addresses: Mechanical Engineering Department, Poornima College of Engineering, Jaipur, India ' Mechanical Engineering Department, IIT (ISM) Dhanbad, India ' Mechanical Engineering Department, IIMT Engineering College, Meerut, India

Abstract: The purpose of present study was to examine the erosion wear behaviour of Fe-Cr coating deposited on 316 L steel using HVOF coating technology. Chromium content was varied (0-15) wt. % in the step of 5 wt. %. The erosion wear test was performed on Air Jet Erosion Tester by choosing set of parameters as per steady state condition and Taguchi Orthogonal array L16. On adding 5 wt. % Cr, the mechanical properties such as hardness and fracture toughness were improved by 21% and 47% respectively. In steady-state wear conditions, specific wear rate was increased with the increase in impact velocity and slurry concentration. Taguchi design of experiment revealed a particular set of parameter for minimum erosion wear rate such as chromium content of 15 wt. %, impact velocity of 40 m/sec, impingement angle of 45° and slurry concentration of 8 gm/litre.

Keywords: Fe-Cr coating; HVOF coating; chromium; solid particle erosion; SEM image.

DOI: 10.1504/IJSURFSE.2023.128886

International Journal of Surface Science and Engineering, 2023 Vol.17 No.1, pp.44 - 57

Received: 04 Jul 2022
Accepted: 27 Sep 2022
Published online: 08 Feb 2023 *