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1. (WO2017191611) POROUS METAL COATINGS USING SHOCKWAVE INDUCED SPRAYING

Pub. No.:    WO/2017/191611    International Application No.:    PCT/IB2017/052634
Publication Date: Fri Nov 10 00:59:59 CET 2017 International Filing Date: Sat May 06 01:59:59 CEST 2017
IPC: B05D 1/12
Applicants: NATIONAL RESEARCH COUNCIL OF CANADA
Inventors: IRISSOU, Eric
LEFEBVRE, Louis-Philippe
Title: POROUS METAL COATINGS USING SHOCKWAVE INDUCED SPRAYING
Abstract:
A new spray process allows for deposition below a critical velocity limit of cold spray, while providing adhesion. Post deposition heat treatment has shown excellent coating strength. A wide variety of materials can be deposited. The spray process is based on ShockWave Induced Spraying (SWIS) but with much slower spray jet projection velocities. High porosity, pore size control, and porosity control are demonstrated to be controllable. Preheating of feedstock and uniform temperature of the SWIS delivery allow for the deposition below critical velocity.