Investigation of Residual Stresses in ZrO₂ -20%MgO Thermally Sprayed Coating Using X-Ray Diffraction Technique

Zainab H. Lafta; Adel K. Mahmoud; Ekhlas E. Kader

doi:10.24237/djes.2020.13206

Investigation of Residual Stresses in ZrO₂ -20%MgO Thermally Sprayed Coating Using X-Ray Diffraction Technique

https://doi.org/10.24237/djes.2020.13206

Authors

Zainab H. Lafta
en.zainab4458@gmail.com
Department of Mechanical Engineering, College of Engineering, University of Diyala, Iraq
Adel K. Mahmoud Department of Material Engineering, College of Engineering, University of Diyala, Iraq
Ekhlas E. Kader Department of Mechanical Engineering, College of Engineering, University of Diyala, Iraq

Keywords:

X-ray, residual stresses ZrO₂-20%MgO, flame spray technique

Abstract

The aim of this work is to investigates the residual stresses and microstructural characteristics of advanced composite ceramic coatings (ZrO₂-20%MgO) which were produced by thermal spraying coating (flame spraying) onto the low carbon steel substrate (AISI 1015) steel. The bond coat used in this work was NiCrAlY alloy between metallic substrate and advanced composite ceramic coatings which was implemented by flame spraying technique. The residual stresses were evaluated by X-ray diffraction techniques using sin²ψ method.Microstructural examination studied by using scanning electron microscopy (SEM) and ( EDS) . The thickness of bond coating was (260ϻm) and for composite ceramic coating was (520 ϻm). The results indicated that the residual stresses were compressive residual stresses. The magnitudes of the stresses in the as-sprayed condition are low and its value was (-19.041 MPa).

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Published

2020-06-01

How to Cite

[1]

Z. H. Lafta, A. K. Mahmoud, and E. E. Kader, “Investigation of Residual Stresses in ZrO₂ -20%MgO Thermally Sprayed Coating Using X-Ray Diffraction Technique”, DJES, vol. 13, no. 2, pp. 43–49, Jun. 2020.