Evaluation of Integrity and Elasticity of Thermally Sprayed Ceramic Coatings byUltrasonics

摘要

Thermally sprayed ceramic coatings are widely used in industrial applicationswhere the coated component is subject to, e.g., high thermal loads or mechanical wear. The mechanical properties of the coating are finally created in the coating process and the chemical composition of the powder used as a raw materials can only give some hints about the properties of the final coating. Several nondestructive testing techniques are available for the detection of defects in ceramic materials or for the evaluation of density and density variations.