Comprehensive Microstructural Characterization and Predictive Property Modelling of Plasma-Sprayed Zirconia Coatings

Published

May 1, 2003

Author(s)

A Kulkarni, Z G. Wang, T Nakamura, S Sampath, A N. Goland, Gabrielle G. Long, H Herman, J. Allen, J Ilavsky, G J. Long, J Frahm, R W. Steinbrech

Abstract

hieving control of the microstructure of plasma-sprayed thermal-barrier coating (TBC) systems offers an opportunity to tailor coating properties to demanding applications. Accomplishing this requires a fundamental understanding of the correlations between processing, microstructure development and related TBC properties. This paper describes the quantitative characterization of the microstructure of plasma-sprayed partially stabilized zirconia (PSZ) coatings by means of x-ray and neutron scattering and imaging techniques. Small-angle neutron scattering, ultra-small-angle X-ray scattering, and X-ray microtomography were used to characterize and visualize the nature and structure of the features in these materials systems. In addition, the influence of processing parameters on microstructure development is discussed along with thermal cycling effects on the pose morphology, and the resultant influence of the porosity on the thermal conductivity and elastic modulus of plasma sprayed PSV TBCs.

Citation

Acta Materialia

Volume

51

Issue

No. 9

Pub Type

Journals

Keywords

elastic modulus, plasma spray, SANS, thermal barrier coatings, thermal conductivity, thermal cycling, USAXS, X-ray microtomography

Citation

Kulkarni, A. , Wang, Z. , Nakamura, T. , Sampath, S. , Goland, A. , Long, G. , Herman, H. , Allen, J. , Ilavsky, J. , Long, G. , Frahm, J. and Steinbrech, R. (2003), Comprehensive Microstructural Characterization and Predictive Property Modelling of Plasma-Sprayed Zirconia Coatings, Acta Materialia (Accessed April 20, 2024)