Disclosed herein is a method comprising disposing a container containing a metal and/or ferromagnetic solid and abrasive particles in a static magnetic field; where the container is surrounded by an induction coil; activating the induction coil with an electrical current, to heat up the metallic or ferromagnetic solid to form a fluid; generating sonic energy to produce acoustic cavitation and abrasion between the abrasive particles and the container; and producing nanoparticles that comprise elements from the container, the metal and/or the ferromagnetic solid and the abrasive particles. Disclosed herein too is a composition comprising first metal or a first ceramic; and particles comprising carbides and/or nitrides dispersed therein. Disclosed herein too is a composition comprising nanoparticles comprising chromium carbide, iron carbide, nickel carbide, -Fe and magnesium nickel.

3D-printed parts may include binding agents to be removed following an additive manufacturing process. A debinding process removes the binding agents by immersing the part in a solvent bath causing chemical dissolution of the binding agents. The time of exposure of the 3D-printed part to the solvent is determined based on the geometry of the part, wherein the geometry is applied to predict the diffusion of the solvent through the 3D-printed part. The 3D-printed part is then immersed in the solvent bath to remove the binding agent, and is removed from the solvent bath after the time of exposure.

The invention relates to a method for producing a low-pressure turbine blade from a TiAl material by means of a selective laser melting process, wherein during production in the selective laser melting process the already partially manufactured low-pressure turbine blade is preheated by inductive heating, and wherein the selective laser melting process is carried out under protective gas, the protective gas atmosphere containing contaminants of oxygen, nitrogen, and water vapor in each case of less than or equal to 10 ppm.

The invention relates to a method for producing a low-pressure turbine blade from a TiAl material by means of a selective laser melting process, wherein during production in the selective laser melting process the already partially manufactured low-pressure turbine blade is preheated by inductive heating, and wherein the selective laser melting process is carried out under protective gas, the protective gas atmosphere containing contaminants of oxygen, nitrogen, and water vapor in each case of less than or equal to 10 ppm.

A multi-step method to produce materials, and coatings of materials, which has three key characteristics. The first is that the density of the resulting materials or coatings can be controllably and widely variable from less than ten percent of normal density up to normal density. The second key characteristic of the invention is the use of starting materials having powders that have grains (particles) with one, two or three dimensions on the size scales of nanometers or micrometers. The third major characteristic part of the invention is the use of microwave radiation or induction heating to quickly raise the temperature of the powders to produce materials or coatings before deleterious diffusion and densification can occur. These features produce new types of materials with properties favorable to many applications, such as chemical and other catalysis, electrolysis in batteries and fuel cells, and light weight structural components.

Disclosed herein is a method comprising disposing a container containing a metal and/or ferromagnetic solid and abrasive particles in a static magnetic field; where the container is surrounded by an induction coil; activating the induction coil with an electrical current, to heat up the metallic or ferromagnetic solid to form a fluid; generating sonic energy to produce acoustic cavitation and abrasion between the abrasive particles and the container; and producing nanoparticles that comprise elements from the container, the metal and/or the ferromagnetic solid and the abrasive particles. Disclosed herein too is a composition comprising first metal or a first ceramic; and particles comprising carbides and/or nitrides dispersed therein. Disclosed herein too is a composition comprising nanoparticles comprising chromium carbide, iron carbide, nickel carbide, -Fe and magnesium nitride.

The invention provides a nondestructive tester that includes a coil for positioning adjacent a surface of an object, a voltage source connected to the coil to apply a forward power to the coil, a measurement circuit connected to the coil to measure a reflected power from the coil due to the forward power, and an analyzer connected to the measurement circuit and determining a result of a function of the reflected power to the forward power and utilizing a result of the function to determine whether a feature presence at or below the surface.

The present disclosure provides systems and processes for additive manufacturing under generated force. Briefly described, one embodiment of the system comprises a motor that applies a centrifugal acceleration to an additive manufacturing build platform, thereby generating a force at the build platform.

The present disclosure provides systems and processes for additive manufacturing under generated force. Briefly described, one embodiment of the system comprises a motor that applies a centrifugal acceleration to an additive manufacturing build platform, thereby generating a force at the build platform.

Apparatus and methods are described for performing additive manufacturing. The apparatus includes a vacuum chamber for fabricating a workpiece composed of deposited metal, a table positioned within the vacuum chamber, and configured to support fabrication of the workpiece on a substrate, and one or more multiple droplet emitters coupled to the vacuum chamber, and arranged to irradiate the workpiece with a stream of molten metal droplets during fabrication.