Hewlett-packard Development Company, L.P.

Johnathon Holroyd

Vladek P Kasperchik

Sterling Chaffins

Kevin P Dekam

Alexey S Kabalnov

Ali Emamjomeh

Stephen G Rudisill

Cassady Sparks Roop

Andrew L Van Brocklin

Michael G Monroe

Douglas Pederson

The present disclosure is drawn to 3-dimensional printed parts that can include a conductive composite portion and an insulating portion. The conductive composite portion can include a matrix of fused thermoplastic polymer particles interlocked with a matrix of sintered elemental transition metal particles. The insulating portion can include a matrix of fused thermoplastic polymer particles that are continuous with the matrix of fused thermoplastic polymer particles in the conductive composite portion. The insulating portion can be substantially free of sintered elemental transition metal particles and can include transition metal oxide bronze particles.

3-dimensional printed parts

A metallic build material granule includes a plurality of primary metal particles and a temporary binder agglomerating the plurality of primary metal particles together. The primary metal particles have a primary metal particle size ranging from about the 1 &#x3bc;m to about 20 &#x3bc;m. The primary metal particles are non-shape memory metal particles, and the metallic build material granule excludes shape memory metal particles.

Metallic build material granules

The present disclosure is drawn to material sets for 3-dimensional printing. The material set can include a thermoplastic polymer powder having an average particle size from 20 &#x3bc;m to 200 &#x3bc;m, a conductive fusing agent composition including a transition metal, and nonconductive fusing agent composition. The nonconductive fusing agent composition can include transition metal oxide bronze particles.

Material sets

In an example of a method for three-dimensional (3D) printing, a polymeric or polymeric composite build material is applied. A dielectric agent is selectively applied on at least a portion of the polymeric or polymeric composite build material. The dielectric agent includes a dielectric material having an effective relative permittivity (&#x3b5;) value ranging from 1.1 to about 10,000. A fusing agent is selectively applied on the at least the portion of the polymeric or polymeric composite build material, and the polymeric or polymeric composite build material is exposed to radiation to fuse the at least the portion of the polymeric or polymeric composite build material to form a region of a layer of a 3D part. The region exhibits a dielectric property, a piezoelectric property, or a combination thereof.

Three-dimensional printing

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Corvallis, OR, United States of America

Johnathon Holroyd