The present disclosure is drawn to fluid sets, material sets, and 3-dimensional printing systems. A fluid set can include a pretreat composition that includes a salt of an alkali metal with bromide or iodide. The fluid set can also include a conductive fusing agent composition including a transition metal for fusing thermoplastic powder when exposed to electromagnetic radiation.

The invention provides a polyetheretherketone (PEEK) composite and a method of preparing same. The PEEK composite is prepared from 55-90 parts by mass of PEEK, 5-30 parts by mass zinc aluminum (ZA) alloy, 5-15 parts by mass graphite, 0.3-1 parts by mass graphene oxide (GO) and a processing additive. The PEEK composite is prepared by the following steps: putting the ZA alloy into an aqueous solution of a quaternary ammonium salt surfactant, ultrasonically dispersing, filtering, washing and drying; dissolving the GO in deionized water, dispersing the ZA alloy in deionized water, and adding a GO solution dropwise to a ZA alloy dispersion to obtain a GO/ZA alloy complex; mixing the PEEK, the GO/ZA alloy complex, the graphite and the processing additive, and drying at 100-120° C. for 3-4 h; and mixing in a mixer, and carrying out compression molding at 380-400° C.

Various methods and systems are provided for manufacturing a radiation shielding component of an imaging apparatus. In one embodiment, the radiation shielding component may be manufactured by infiltrating metal particles with a binder solution and then curing the binder solution impregnated with the metal particles. In another embodiment, the radiation shielding component may be printed with metal powder, infiltrated with a binding agent, and then cured to polymerize the binding agent.

A feedstock material for use in an additive manufacturing apparatus is prepared from a first material and a metal organic framework (MOF). The MOF comprises a plurality of nodes and a plurality of linkers, the plurality of linkers coupled to the plurality of nodes, thereby forming a framework. The MOF has a lower coefficient of thermal expansion than a coefficient of thermal expansion for the first material. As a result, the feedstock material has a reduced coefficient of thermal expansion as compared to the first material alone and thus exhibits low thermal expansion as its temperature is increased. The coefficient of thermal expansion for the MOF may be modified by using a different plurality of nodes and/or a different plurality of linkers, as well as by incorporating guest molecules or atoms into the framework of the MOF.

A lightweight, selectively degradable composite material is disclosed. The composite material comprises a compacted powder mixture of a first powder, the first powder comprising first metal particles comprising Mg, Al, Mn, or Zn, or an alloy of any of the above, or a combination of any of the above, having a first particle oxidation potential, a second powder, the second powder comprising low-density ceramic, glass, cermet, intermetallic, metal, polymer, or inorganic compound second particles, and a third metal powder, the third metal powder comprising third metal particles having an oxidation potential that is different than the first particle oxidation potential. The compacted powder mixture has a microstructure comprising a matrix comprising the first metal particles, the second particles and third particles dispersed within the matrix, the third particles comprising a network of third particles extending throughout the matrix, the composite material having a density of about 3.5 g/cm.sup.3 or less.

A bonded soft magnet object comprising bonded soft magnetic particles of an iron-containing alloy having a soft magnet characteristic, wherein the bonded soft magnetic particles have a particle size of at least 200 nm and up to 100 microns. Also described herein is a method for producing the bonded soft magnet by indirect additive manufacturing (IAM), such as by: (i) producing a soft magnet preform by bonding soft magnetic particles with an organic binder, wherein the magnetic particles have an iron-containing alloy composition with a soft magnet characteristic, and wherein the particles of the soft magnet material have a particle size of at least 200 nm and up to 100 microns; (ii) subjecting the preform to an elevated temperature sufficient to remove the organic binder to produce a binder-free preform; and (iii) sintering the binder-free preform at a further elevated temperature to produce the bonded soft magnet.

Examples include a method of forming an electromagnetic shielding material, the method including: applying a magnetic field to a precursor material that includes first ferromagnetic particles embedded within a first portion of a matrix material and second ferromagnetic particles embedded within a second portion of the matrix material, thereby causing the first ferromagnetic particles and the second ferromagnetic particles to move such that longitudinal axes of the first ferromagnetic particles and the second ferromagnetic particles become more aligned with the magnetic field; thereafter forcing the first portion of the matrix material through a filter, thereby moving the first ferromagnetic particles from the first portion of the matrix material into the second portion of the matrix material; and curing the second portion of the matrix material to form the electromagnetic shielding material. Additional examples include an electromagnetic shielding material and an apparatus for forming an electromagnetic shielding material.

Examples include a method of forming an electromagnetic shielding material, the method including: applying a magnetic field to a precursor material that includes first ferromagnetic particles embedded within a first portion of a matrix material and second ferromagnetic particles embedded within a second portion of the matrix material, thereby causing the first ferromagnetic particles and the second ferromagnetic particles to move such that longitudinal axes of the first ferromagnetic particles and the second ferromagnetic particles become more aligned with the magnetic field; thereafter forcing the first portion of the matrix material through a filter, thereby moving the first ferromagnetic particles from the first portion of the matrix material into the second portion of the matrix material; and curing the second portion of the matrix material to form the electromagnetic shielding material. Additional examples include an electromagnetic shielding material and an apparatus for forming an electromagnetic shielding material.

A hybrid additive manufacturing system a build chamber, a polymer additive manufacturing system housed within the build chamber and a physical vapor deposition (PVD) system housed within the build chamber. A controller is configured to issue control signals to the polymer additive manufacturing system and PVD system for layered deposition of polymer and PVD layers in a multilayer part.

A film-shaped fired material of the present invention is a film-shaped fired material 1 which contains sinterable metal particles 10 and a binder component 20, in which a time (A1) after the start of a temperature increase, at which a negative gradient is the highest, in a thermogravimetric curve (TG curve) measured from 40 C. to 600 C. at a temperature-rising-rate of 10 C./min in an air atmosphere and a maximum peak time (B1) in a time range of 0 seconds to 2160 seconds after the start of a temperature increase in a differential thermal analysis curve (DTA curve) measured from 40 C. to 600 C. at a temperature-rising-rate of 10 C./min in an air atmosphere using alumina particles as a reference sample satisfy a relationship of A1<B1<A1+200 seconds and a relationship of A1<2000 seconds.