The titanium-based porous body according to the present invention is in a form of a sheet and contains titanium, and the titanium-based porous body has a thickness of 0.8 mm or less, a porosity of 30% to 65%, a maximum height Rz1 of one sheet surface of 30 ?m or less, a ratio of a maximum height Rz2 of other sheet surface to the maximum height Rz1 of the one sheet surface (Rz2/Rz1) of 1.2 or more, and a compression deformation rate of 19% or less.

An apparatus and process for formation of a multicomponent metal alloy ingot or product in which granulated metal feedstock, under a high pressure inert environment, is introduced onto a rotating platen or previously deposited layer on the rotating platen. As the granulated feedstock is deposited on the platen, the platen is rotated such that a segment of the platen having the feedstock thereon passes through an energy generator field such as a melting laser beam or eddy current induction melting field. As it passes it is melted to form an arcuate segment of melt. The melt is then rotated out from under the energy beam and cooled into a solid state of the desired alloy as a next contiguous segment of feedstock is introduced and the process repeated until a layer is formed. The platen may then be indexed lower and a new layer is formed in the same manner.

An apparatus and process for formation of a multicomponent metal alloy ingot or product in which granulated metal feedstock, under a high pressure inert environment, is introduced onto a rotating platen or previously deposited layer on the rotating platen. As the granulated feedstock is deposited on the platen, the platen is rotated such that a segment of the platen having the feedstock thereon passes through an energy generator field such as a melting laser beam or eddy current induction melting field. As it passes it is melted to form an arcuate segment of melt. The melt is then rotated out from under the energy beam and cooled into a solid state of the desired alloy as a next contiguous segment of feedstock is introduced and the process repeated until a layer is formed. The platen may then be indexed lower and a new layer is formed in the same manner.

A 3D printing method of a metal object includes stacking molten metal powders along an outlined path to form a metal object. An inert gas is introduced into a chamber with the metal object inside, and the metal object is hot isostatic pressed in the chamber at 80-120 MPa and 900-1000 C. for 1-4 hours.

The present application describes the development of a method for creating a continuous conductive metal layer on a surface of a component, the component preferably made of molded acrylonitrile butadiene styrene polymer (ABS) or polycarbonate/ABS (PC/ABS) blend, the method utilizing cold sintering. This method avoids the need for chromic acid etching pretreatment prior to the electroplating process. Continuous, conductive and thickness-controllable layers of metals such as Ni, Fe, Cu or Ni/Fe have been created on the plastic surface using the cold sintering. The method will also work with any other metal. Thus, molded ABS or PC/ABS parts can be further electroplated without the need to go through the undesirable etching process.

The present application describes the development of a method for creating a continuous conductive metal layer on a surface of a component, the component preferably made of molded acrylonitrile butadiene styrene polymer (ABS) or polycarbonate/ABS (PC/ABS) blend, the method utilizing cold sintering. This method avoids the need for chromic acid etching pretreatment prior to the electroplating process. Continuous, conductive and thickness-controllable layers of metals such as Ni, Fe, Cu or Ni/Fe have been created on the plastic surface using the cold sintering. The method will also work with any other metal. Thus, molded ABS or PC/ABS parts can be further electroplated without the need to go through the undesirable etching process.

An example additive manufacturing system comprises a first fan associated with a print chamber to flow gas from the print chamber into an exhaust conduit. A sensor is arranged to detect one or more conditions of the gas flowed into the exhaust conduit from the print chamber by the first fan and to output a signal indicative thereof. A second fan is spaced apart in a downstream direction along the exhaust conduit from the first fan and a control unit is arranged to receive the signal from the sensor and to control the second fan in dependence thereon to maintain one or more conditions of the gas extracted from the print chamber.

An example additive manufacturing system comprises a first fan associated with a print chamber to flow gas from the print chamber into an exhaust conduit. A sensor is arranged to detect one or more conditions of the gas flowed into the exhaust conduit from the print chamber by the first fan and to output a signal indicative thereof. A second fan is spaced apart in a downstream direction along the exhaust conduit from the first fan and a control unit is arranged to receive the signal from the sensor and to control the second fan in dependence thereon to maintain one or more conditions of the gas extracted from the print chamber.

The present invention provides a technique of obtaining a high metal powder content aluminum composite body, in which the numbers of cracks and defects are small and a metal content ratio is high, by impregnating a preform with an Al alloy or the like at a high pressure or by causing an Al alloy or the like to infiltrate without pressurization into a preform. This technique can be provided by establishing a preparation technique of obtaining a uniform preform of a metal powder in which the filling rate of the metal powder can be increased and there are no defects in the inside thereof. The present invention provides a method for producing a high metal powder content aluminum composite body, wherein: in a preform preparation step, two or more materials each having a different particle size are selected from metal powder materials having a particle size of 1 to 200 ?m; a molded product obtained from a material obtained by adding and mixing an organic/inorganic binder to these metal raw materials is calcined at a temperature of 300? C. or higher to obtain a preform having a metal raw material content ratio of 55 v % or more; and the obtained preform is impregnated with a molten metal of an aluminum alloy or the like at a high pressure, or a molten metal of an aluminum alloy or the like is caused to infiltrate without pressurization into the obtained preform. The present invention also provides a composite body obtained by these production methods, and a method for preparing the preform.

A process for preparing alloy products is described using a self-sustaining or self-propagating SHS-type combustion process with point-source ignition, preferably a laser, in a pressurized vessel. Binary, ternary and quaternary alloys can be formed with control over polycrystalline structure and bandgap. Methods to tune the bandgap and the alloys formed are described. The alloy products may be doped. Preferably sulfides, tellurides or selenides are formed. Cooling during reaction takes place.