EBSD Analysis and Assessment of Porosity in Thermal Barrier Coatings Produced by Axial Suspension Plasma Spraying (ASPS)
Paper in proceedings, 2017

Axial suspension plasma spraying (ASPS) is a relatively new, innovative spraying technique which has produced thermal barrier coatings (TBCs) with attractive properties such as high durability and low thermal conductivity. Using a suspension, it is possible to spray with finer powder particles resulting in coatings that have a columnar microstructure and contain a wide range of pore sizes, both nm- and μm-sized pores. To optimize the thermal properties and to maintain them during service of the components, it will be important to design TBCs with optimal porosity. Hence, an important part in the assessment of ASPS coatings is therefore the characterization of the microstructure and how it is build up, and the determination of porosity. Both aspects are addressed by performing measurement on splats and ASPS-coating using electron backscatter diffraction (EBSD) technique and by measuring porosity by Mercury Intrusion Porosimetry (MIP).

Mercury intrusion porosimetry



Thermal barrier coating


Axial suspension plasma spraying



Uta Klement

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

Johanna Ekberg

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

Ashish Ganvir

University West

Materials Science Forum

0255-5476 (ISSN)

Vol. 879 972-977
978-303571129-5 (ISBN)

Driving Forces

Sustainable development

Subject Categories

Materials Engineering

Other Materials Engineering

Areas of Advance

Materials Science





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