A composite material comprising a metal matrix and nanocellulose supplement. The metal matrix is formed of a metal base material and may be monolithic throughout the composite material. The nanocellulose supplement improves a material property of the metal matrix and is formed of a nanocellulose supplement material dispersed in the metal base material. Importantly, the nanocellulose supplement material does not become damaged when the composite material is formed.

A method for the powder-metallurgical production of a component from titanium or a titanium alloy is disclosed. In this method, following the customary procedure, first a green part is formed by using metal powder formed from titanium or the titanium alloy and is densified and compacted in a subsequent sintering step. Metal powder of titanium or the titanium alloy with an average grain size of <25 m is used for producing the green part and the sintering step is carried out at a sintering temperature of up to a maximum of 1100 C. for a sintering at a sintering duration of 5 hours in an atmosphere that is under a reduced pressure in comparison with normal pressure. These measures achieve the effect that the grain structure of the material obtained, and consequently also the material properties, can be selectively influenced.

Provided is a method for efficiently manufacturing fine metal particles applicable as a fuel cell electrode catalyst. Provided is a method of manufacturing fine metal particles, including the step of: a hydrogen bubbling step to perform bubbling to a reaction solution, wherein: the reaction solution is prepared by allowing seeds of fine metal particles in a dispersed state and a water soluble noble metal precursor to co-exist in a water-containing solvent; and the bubbling is performed with a reaction gas containing a hydrogen gas, is provided.

A method (500) for producing a titanium product is disclosed. The method (500) can include obtaining TiO.sub.2-slag (501) and reducing impurities in the TiO.sub.2-slag (502) to form purified TiO.sub.2 (503). The method (500) can also include reducing the purified TiO.sub.2 using a metallic reducing agent (504) to form a hydrogenated titanium product comprising TiH.sub.2 (505). The hydrogenated titanium product can be dehydrogenated (506) to form a titanium product (508). The titanium product can also be optionally deoxygenated (507) to reduce oxygen content.

A selective laser melting technology-based apparatus for preparing a gradient material, comprising a laser scanning array lens, and a powder storer, a powder mixer, a powder scraping plate, and a working platform that are provided in sequence from top to bottom; the powder storer is provided with two or more partitions; a bottom portion of the powder storer is provided with an outlet; the powder mixer is provided under the powder storer and is a horizontally provided rotational mixer; the powder scraping plate is disposed under the powder mixer; the working platform is provided under the powder scraping plate; the laser scanning array lens is provided on the working platform. The present invention further relates to a method for preparing a gradient material, comprising powder storing, powder scraping, powder mixing, powder laying, and printing. The method can guarantee the two-phase powder ratio in each layer of powder not change.

A method for manufacturing metal components includes the steps of providing a waste feedstock having a selected chemical composition; producing an additive manufacturing (AM) grade alloy powder from the waste feedstock using a cold hearth mixing process; providing an additive manufacturing system; controlling the producing of the alloy powder such that the properties of the alloy powder optimize building of the components using the additive manufacturing system; and building the components using the alloy powder and the additive manufacturing system.

A method for sintering metallic and/or non-oxide components includes completely encapsulating, in a metal halide salt, a green body comprising at least one metallic and/or non-oxide powder, and compressing the encapsulated green body so as to be gastight. The method further includes heating, together with a metal halide salt in the presence of oxygen up to sintering temperatures, the compressed, encapsulated green body. The method additionally includes at least partially dissolving, after cooling, the metal halide salt in a liquid so that the sintered component can be removed.

Herein discussed is a method of making a fuel cell comprising (a) producing an anode using an additive manufacturing machine (AMM); (b) creating an electrolyte using the additive manufacturing machine; and (c) making a cathode using the additive manufacturing machine. In an embodiment, the anode, the electrolyte, and the cathode are assembled into a fuel cell utilizing the additive manufacturing machine. In an embodiment, the fuel cell is formed using only the additive manufacturing machine.

Disclosed is a method of producing titanium and titanium alloy nanopowder from titanium-containing slag through a shortened process. The method includes: (1) subjecting titanium-containing slag to high-temperature oxidation and enrichment and then melting to precipitate titanium-enriched slag; (2) subjecting the titanium-enriched slag to pulverization and gravity flotation; (3) carrying out secondary enrichment; (4) preparing a molten salt reaction system; (5) synthesizing titanium and salt-containing titanium alloy nanopowder by reduction reaction; and (6) vacuum filtering, pickling, washing and vacuum drying the salt-containing titanium alloy nanopowder; and then separating titanium alloy nanopowder from the molten salt. Using the present method, the titanium-containing slag can be continuously treated to produce titanium and titanium alloy nanopowder. It requires a shortened process, a simple equipment and low energy consumption. The process is environmentally friendly and produces excellent products without solids, gas or liquids that are harmful to environment.

The present invention aims to provide sintered materials of austenite steel powder each having a strength which is equivalent to or in excess of the strength of a Ni-based alloy and insusceptible to oxygen and turbine members each being composed of each sintered material. There is provided the sintered material of austenite steel powder which contains 25 to 50% Ni; 12 to 25% Cr, 3 to 6% Nb; 0.001 to 0.05% B; not more than 1.6% Ti; not more than 6% W; not more than 4.8% Mo; and not more than 0.5% Zr in percentage by mass, with a balance made up of Fe and unavoidable impurities.