SINTER BONDED POROUS METALLIC COATING

摘要

PROBLEM TO BE SOLVED: To deposit a porous thin nano powder sintered layer on a substrate.

SOLUTION: A composite structure includes a substrate with pores of a first mean pore size and a coating on at least one surface of that substrate. The coating has pores of a second mean pore size. One method to form the porous coating on the substrate includes the steps of: (1) forming a suspension 41 of sinterable particles in a carrier fluid and containing the suspension 41 in a reservoir 43; (2) maintaining the suspension 41 by agitation in the reservoir 43; (3) transferring the suspension 41 to an ultrasonic spray nozzle 51; (4) applying a first coating of the suspension 41 to the substrate; and (5) sintering the sinterable particles to the substrate, thereby forming a coated substrate.

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