A method of producing a layered thick coating which has antibacterial properties, high-wear resistance and low friction coefficient on the surfaces of metallic materials. The objective is to provide a layered thick coating production method, which enables to form a titanium oxide layer exhibiting bioactive property on the outermost surface of the coating, and to produce a structurally denser coating as the zinc contained in the coating causes liquid phase sintering thereby filling the discontinuities in the coating structure.

There is provided a chain apparatus made at least in part by additive manufacturing. The apparatus includes a pair of spaced-apart annular members. The apparatus includes an elongate member coupled to and extending between the annular members. At least one of the members comprises one or more self-draining internal chambers to allow for removal of residual material therefrom.

An example method of modifying a powder according to the present disclosure includes contacting a powder comprising particles with a nitrogen-containing gas and improved flowability of the powder. A method of providing a powder and a reactor are also disclosed.

A method of titanium rod additive manufacturing may comprise: mixing a plurality of powdered metals comprising titanium, iron, vanadium, and aluminum to produce a powder blend; isostatic pressing the powder blend to form a billet having a cross-sectional profile; cutting the billet to form a rod feedstock having the first cross-sectional profile; loading the rod feedstock into an additive manufacturing machine configured to deposit the rod feedstock; and producing a metallic component from the rod feedstock.

Systems and methods additively manufacturing an object by applying heat to a first plurality of metallic particles in a powder bed using a first heat source, wherein the first heat source is one of multiple heat sources configured into an array, and the first heat source generates a first melt pool. Heat is simultaneously applied to a second plurality of metallic particles in the powder bed using a second heat source of the multiple heat sources in the array to generate a second melt pool. The first plurality of metallic particles are separated from the second plurality of metallic particles by a distance, wherein the distance and an amount of heat from each heat source is controlled to generate a combined melt pool that is larger in size and encompasses the first and second melt pools. The combined melt pool is allowed to solidify to form the object.

A deposition wire of the powder-in-tube type comprises a hollow tubular portion of titanium and a core portion filling the tubular portion. The core portion occupies between (30) volume % and (80) volume % of the deposition wire. The core portion comprises compacted elongated powders of titanium and possibly also comprises other compacted powders selected from the group consisting of aluminium, vanadium, aluminium-vanadium, chromium, molybdenum, boron, niobium, tantalum, nickel, zirconium, silicon, copper, tin, iron and palladium. Due to the high volume of the core portion, the process of making the wire is less complex.

A method is provided to remove a selective amount of material from a metal component fabricated by additive manufacturing in a self-terminating manner. The method can be used to remove support structures and trapped powder from a metal component as well as to smooth surfaces of a 3D printed metal component. In some embodiments, selected surfaces of the metal component are treated to make the selected surfaces at least one of mechanically and chemically unstable. The unstable portion of the metal support can then be removed chemically, electrochemically, or through vapor-phase etching. The method can be used for processing any fluid or vapor-accessible regions and surfaces of a 3D printed metal component.

An acetabular cup for a hip prosthesis, which includes a cotyle body provided with a number of holes for the passage of fixing screws. T holes are connected to each other by a number of ribs which define a grid.

Provided herein are various enhancements for additive manufacturing using titanium and titanium alloy materials. In one example, a method includes inoculating a titanium material with ceramic particles that produce nucleation sites within the titanium material during successive melt and solidification steps of an additive manufacturing process. The nucleation sites promote grain nucleation during solidification of molten titanium material into solid titanium material during the additive manufacturing process.

A nickel-based alloy powder for additive manufacturing having in weight %: C:0.09 to 0.17, Ti:3.8 to 4.5, Zr:>0.06, W:1.8 to 2.6, and Al:3.0 to 3.8 is disclosed.