Applied Materials, Inc.

Sandip S Desai

Jonathan Stuart Frankel

Quoc Truong

Sekar Krishnasamy

Govindraj Desai

Hou Tee Ng

David Masayuki Ishikawa

Sumedh Acharya

Eric Ng

Bahubali S Upadhye

A method of coating particles includes dispensing particles into a vacuum chamber to form a particle bed in at least a lower portion of the chamber that forms a half-cylinder, evacuating the chamber through a vacuum port in an upper portion of the chamber, rotating a paddle assembly such that a plurality of paddles orbit a drive shaft to stir the particles in the particle bed, injecting a reactant or precursor gas through a plurality of channels into the lower portion of the chamber as the paddle assembly rotates to coat the particles, and injecting the reactant or precursor gas or a purge gas through the plurality of channels at a sufficiently high velocity such that the reactant or precursor a purge gas de-agglomerates particles in the particle bed.

Gas injection for de-agglomeration in particle coating reactor

An additive manufacturing apparatus includes a platform, a dispenser configured to deliver a plurality of successive layers of feed material on the platform, at least one energy source to selectively fuse feed material in a layer on the platform, and an air knife supply unit. The air knife supply unit includes a tube having a plurality of holes spaced along a length of the tube, a multi-fluted helical screw positioned in the tube, a gas inlet configured to supply a gas into an end of the tube with the screw configured to guide the gas from the gas inlet through the tube and out the holes, and a spiral plenum surrounding the tube with the spiral plenum including an inner end to receive gas from the holes and an outer end to deliver the gas over the platform.

Air knife for additive manufacturing

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Bengaluru, India

Sandip S Desai