FLAME-ASSISTED FLASH SINTERING

摘要

The present disclosure is directed to an apparatus and method of sintering inorganic powder coatings on substrates, and includes a flame and an electric plasma. The method is capable of being used in an open atmospheric environment. The substrate is electrically conductive and is used as one electrode while the flame is used as the other electrode that is moved over the areas of the powder coating to be sintered. An electrical current is used to cause a plasma produced through the flame, resulting in a combined energy and temperature profile sufficient for inorganic powder-powder and powder-substrate bonding. This method is referred to as flame-assisted flash sintering” (FAFS).

主权项

1. A FAFS method of manufacturing a coated substrate, the method comprising:
a. providing a substrate having an exposed first surface b. providing a powder having of a plurality of particles. c. disposing said powder to said first surface of said substrate to form a powder layer d. providing a flammable gas capable of creating a flame e. providing a flame head, burner, or torch capable of dispensing said flammable gas toward said powder layer on said substrate f. creating a flame near or on a first electrode so that a high voltage current can pass from the flame, through the powder layer and substrate to a second electrode connected to said substrate. g. electrically energizing said electrodes causing a current flow through said flame and powder layer h. consolidating or sintering said powder on said substrate in said current flow area.