According to the invention, the electrode wire (1) for electric discharge machining comprises a metal core (2), in one or more layers of metal or metal alloy. On the metal core (2), a coating (3) having an alloy different from that of the metal core (2) contains more than 50 wt % zinc. The coating (3) comprises copper-zinc alloy (3a) of fractured γ phase, and covers the majority of the metal core (2). The coating (3) contains covered pores (5a, 5b, 5c, 5d, 5e) larger than 2 μm.

A diffusion barrier coating on a nickel-based alloy substrate comprising the diffusion barrier being coupled to the substrate between the substrate and a composite material opposite the substrate, wherein the diffusion barrier comprises a nickel phosphorus alloy material.

A method of forming an airfoil includes the steps of depositing material to form an airfoil in a first layer, and then depositing material in a second layer on the first layer. The first and second layers have distinct densities. An airfoil is also disclosed. The method provides powerful design advantages.

The invention relates to a ballistic steel or wear-resistant steel (1) made up of a multilayer steel materials composite comprising a first layer (1.1) composed of a steel which in the hardened or tempered state has a hardness of >350 HBW and at least one second layer (1.2) which is composed of a steel which is softer compared to the first layer (1.1) and is joined by substance-to-substance bonding to the first layer (1.1), wherein the second layer (1.2) has a hardness which is at least 20% lower than that of the first layer (1.1) in the hardened or tempered state. The invention further relates to a corresponding use of the ballistic steel or wear-resistant steel (1).

A copper-coated steel wire includes a core wire made of a steel and a coating layer made of copper or a copper alloy which covers an outer peripheral surface of the core wire. The coating layer includes an intermediate layer which is disposed in a region including the interface with the core wire and has a higher zinc concentration than a remaining region of the coating layer.

A method of forming an inverse opal structure along a substrate that includes depositing polymer spheres along the substrate and electroplating the substrate and spheres at a first current density to form a first solid metal layer such that the spheres are raised from the substrate. The method includes electroplating the substrate and the spheres at a second current density to diffuse metals from the substrate and deposit the metal about the spheres. The second current density is greater than the first current density. The method includes electroplating the substrate and spheres to form a second solid metal layer disposed over the spheres, and removing the spheres to form the inverse opal structure disposed between the first and second solid metal layers. The first and second solid metal layers define planar interface surfaces disposed over a porous structure of the inverse opal structure.

Provided is a plated steel sheet often used as materials for vehicles, home appliances, construction and the like and, more specifically, to a plated steel sheet having a multilayer structure and a method for manufacturing the same.

Cylinder of piston-type internal combustion engine includes at least one bore with inner shell formed from a base material. The base material, in a region of the bore, includes a layer system, and a first boundary surface formed between base material and layer system. Layer system includes at least one thermally sprayed layer forming at least partially a shell surface of the bore and acts there as a functional layer. First boundary surface does not include any profiling applied for mechanical activation of the surface apart from surface roughness resulting from manufacture of the bore. The material of the layer system includes molybdenum and at least one further element in the region of the boundary surface to the base material and is bonded to the base material by a chemical bond. This boundary surface material differs from the material of the functional layer in composition and/or structure.

In some aspects, this disclosure relates to improved Z-grade materials, such as those used for shielding, systems incorporating such materials, and processes for making such Z-grade materials. In some examples, the Z-grade material includes a diffusion zone including mixed metallic alloy material with both a high atomic number material and a lower atomic number material. In certain examples, a process for making Z-grade material includes combining a high atomic number material and a low atomic number material, and bonding the high atomic number material and the low atomic number together using diffusion bonding. The processes may include vacuum pressing material at an elevated temperature, such as a temperature near a softening or melting point of the low atomic number material. In another aspect, systems such as a vault or an electronic enclosure are disclosed, where one or more surfaces of Z-grade material make up part or all of the vault/enclosure.

A scale-style micro-texture electrode wire material and a preparation method therefor and use thereof. In particular, the electrode wire material has a scale-style micro-texture layer on the surface, and the electrode wire material comprises: i) an alloy substrate layer as an inner layer; ii) an interdiffusion layer as an intermediate layer; and iii) a plating layer as an outer layer; and a contact angle of the electrode wire material to a cooling liquid is 105-150. A method for preparing the electrode wire material and a use thereof. Due to the special surface bionic structure, the electrode wire can obviously reduce the cutting resistance and improve the cooling speed, thereby improving the cutting speed and effectively improving the use performance of the electrode wire. The preparation method has the characteristics of simple process and easy for industrial production.