A method may include fused filament fabricating a fused filament fabricated component by delivering a softened filament to selected locations at or adjacent to a build surface. The softened filament may include a binder and a primary material. The binder is configured to release a secondary material upon heating at or above a conversion temperature. The method also may include heating the fused filament fabricated component to a temperature at or above the conversion temperature to sinter the primary material to form a sintered part and cause the binder to release the secondary material within the sintered part.

Methods and apparatuses for in situ synthesis of alloys and/or composites are disclosed, the method comprising: (a) providing an apparatus having: an electromagnetic energy source; an autofocusing scanner; a powder system; a powder delivery system; and computers coupled and configured to control the electromagnetic energy source, the autofocusing scanner, the powder system, and the powder delivery system; (b) programming the computers with structural and material specifications of the sample; (c) using the computers to control electromagnetic radiation, powder mixture, and powder deposition parameters; and (d) focusing and scanning the electromagnetic radiation onto the sample while two or more powders are concurrently deposited onto the sample to deposit layers onto the sample for multiple metal powder synthesis, metal and ceramic synthesis, ceramic synthesis, and/or gradated composition synthesis, wherein the layers comprise at least one new material which differs from the two or more powders. Other embodiments are described and claimed.

The present disclosure provides a metal-ceramic composite structure and a fabrication method thereof. The metal-ceramic composite structure includes a ceramic substrate having a groove on a surface thereof; a metal member filled in the groove, including a main body made of zirconium base alloy, and a reinforcing material dispersed in the main body and selected from at least one of W, Mo, Ni, Cr, stainless steel, WC, TiC, SiC, ZrC, ZrO.sub.2, BN, Si.sub.3N.sub.4, TiN and Al.sub.2O.sub.3; a luminance value L of the metal member surface is in a range of 36.92-44.07 under a LAB Chroma system.

The present disclosure provides a metal-ceramic composite structure and a fabrication method thereof. The metal-ceramic composite structure includes a ceramic substrate having a groove on a surface thereof; a metal member filled in the groove, including a main body made of zirconium base alloy, and a reinforcing material dispersed in the main body and selected from at least one of W, Mo, Ni, Cr, stainless steel, WC, TiC, SiC, ZrC, ZrO.sub.2, BN, Si.sub.3N.sub.4, TiN and Al.sub.2O.sub.3; a luminance value L of the metal member surface is in a range of 36.92-44.07 under a LAB Chroma system.

The present invention relates to a method for preparing ferrite/reducing metal composite particles and a method for preparing a high temperature resistant stealth coating based on 3D laser printing, belonging to the technical field of preparation of absorbing coatings. The present invention aims to solve the problems that an existing high-temperature absorbing coating has insufficient coating/matrix bonding force, the microstructure of the coating is difficult to control, and electromagnetic properties cannot be ensured. In the present invention, nano ferrite powder and nano reducing metal powder are prepared into composite particles by a mixing granulation process. In a sealed preparation chamber of a 3D printing device, composite particles are subjected to laser-induced in-situ reaction on the surface of a substrate to prepare a high temperature resistant stealth coating. The present invention is applied to high temperature resistance and stealth of components and prevention and control of electromagnetic pollution.

A method for manufacturing an alloy formed from a boride of a precious metal, the method involving reacting a source of the precious metal with a source of boron in a salt or a mixture of salts in the molten state. The present invention also relates to an alloy formed from a boride of a precious metal, the alloy including crystalline nanoparticles of M.sub.xB.sub.y with M which is a precious metal, distributed in an amorphous matrix of B or in an amorphous matrix of B and of M.sub.zB.sub.a.

An nitrogen solid solution titanium sintered compact includes a matrix made of a titanium component having an -phase, nitrogen atoms dissolved as a solute of solid solution in a crystal lattice of the titanium component, and metal atoms dissolved as a solute of solid solution in the crystal lattice of the titanium component.

Powder alloy compositions and associated additive manufacturing techniques are described herein for production of sintered articles with unique microstructure and/or enhanced wear and corrosion resistance. In some embodiments, an article comprises sintered powder cobalt-based alloy having metal carbide precipitates dispersed in a cobalt solid solution matrix phase, wherein the metal carbide precipitates are present in an amount of at least 50 weight percent of the sintered powder cobalt-based alloy.

A hardening agent for three-dimensional printing includes a boron-containing hardener and a jettable liquid vehicle, and is devoid of a pigment and a dye. The boron-containing hardener is selected from the group consisting of a water dispersible boron-containing hardener present in an amount ranging from about 6 wt % to about 15 wt %, and a water soluble boron-containing hardener present in an amount ranging from greater than 1 wt % to about 20 wt %.

An nitrogen solid solution titanium sintered compact includes a matrix made of a titanium component having an -phase, nitrogen atoms dissolved as a solute of solid solution in a crystal lattice of the titanium component, and metal atoms dissolved as a solute of solid solution in the crystal lattice of the titanium component.