Abstract
Industrially manufactured partially stabilized zirconia thermal barrier coatings were characterized and tested. Optical microscopy tests were employed for qualitative and quantitative characterization of the coating structures as sprayed and after testing. Particular emphasis was given to the porosity of the ceramic coatings with regard to the size, shape and distribution of the pores by use of an interactive image processing system. In addition, the nature and quantity of phases in the ceramic coatings were determined using X-ray diffraction analysis. Thermal shock resistance was detected by burner rig tests.
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