Studying the structure and adhesion strength of thermal barrier coating

• DOI: 10.1063/1.5135137
• Publication Date: 2019-11-19T18:00:10Z
• Authors: N. B. Pugacheva; B. N. Guzanov; N. V. Obabkov; T. M. Bykova; N. S. Michurov
• Keywords: Diffusion barrier

The structure and adhesive strength of thermal barrier coatings produced by successive deposition layers is studied. coating applied in three layers: i) a diffusion aluminosilicide that provides protection against high temperature oxidation corrosion, with thickness 50 µm; ii) metal sublayer providing smooth transition from to ceramic one, 100 120 iii) layer decreasing the blades during operation, 70 µm. total ranges 0.17 0.27 mm. It shown second third deposited plasma spraying are quite dense, porosity being less than 5 vol%. During tensile tests carried out on an Instron testing machine, failure glued samples was always detected joint. epoxy-based 12 MPa; it can be stated higher MPa.