EBSD Analysis and Assessment of Porosity in Thermal Barrier Coatings Produced by Axial Suspension Plasma Spraying (ASPS)
2017 (English)In: Materials Science Forum, THERMEC 2016: Chapter 2: Contributed Papers / [ed] C. Sommitsch, M. Ionescu, B. Mishra, E. Kozeschnik och T. Chandra, Trans Tech Publications, 2017, Vol. 879, 972-977 p.Conference paper (Refereed)
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).
Place, publisher, year, edition, pages
Trans Tech Publications, 2017. Vol. 879, 972-977 p.
Axial Suspension Plasma Spraying, Electron Backscatter Diffraction (EBSD), Mercury Intrusion Porosimetry, Porosity, Scanning Electron Microscopy (SEM), Thermal Barrier Coatings (TBCs), XRM
Manufacturing, Surface and Joining Technology
IdentifiersURN: urn:nbn:se:hv:diva-10328DOI: 10.4028/www.scientific.net/MSF.879.972ScopusID: 2-s2.0-85000428327OAI: oai:DiVA.org:hv-10328DiVA: diva2:1057267
THERMEC'2016, International Conference of Processing & Manufacturing of Advanced Materials: Processing, Fabrication, Properties, Applications, Graz, Austria, May 29- June 3, 2016