National Research Council of Canada

Basil R Marple

Christian Moreau

Rogerio Soares Lima

Jean Boulanger

Rogerio S Lima

By engineering thermal spray parameters, such as temperature and velocity, and engineering feedstock powder size and morphology, ceramic coatings may be produced having desired mechanical and thermal properties. The ceramic thermal spray coating may have a microstructure having about 10-80% by cross-sectional area of a particulate phase based on, surface area of the coating, and the particulate phase is uniformly distributed throughout the coating. The particulate phase is an unmelted portion of the thermal sprayed feedstock, which is highly porous and may be produced by agglomerating nanoparticles of the ceramic. Such coatings can be applied as TBCs or as abradable coatings.

Thermal spray coating of porous nanostructured ceramic feedstock

A slip casting process and apparatus for producing parts with graded properties across the thickness of the body of the parts. A number of slips is combined at a varying predetermined ratio and passed continuously through a casting mold between its inlet and outlet. The process can be carried out under elevated pressure. The casting mold can be positioned vertically or horizontally.

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Boucherville, Canada

Basil R Marple