A method for producing an optical component of a lighting device for vehicles, wherein a base body is made of a translucent or transparent material, a screen coating is applied to an outer surface of the base body by vapor deposition or by sputtering of a coating material, wherein the screen coating is applied as a reflective coating, wherein, during the application process, first a first reflective laminate layer with a low degree of reflection and then a second reflective laminate layer with a high degree of reflection are applied.

The invention includes miniature dots, miniature disks or miniature cylinders and methods of making the same by dispersing a particle in or on a dissolvable, meltable or etchable layer on a substrate, a portion of the particle exposed above a surface of the dissolvable, meltable or etchable layer; depositing a mask on the particles and the dissolvable substrate; removing the particles from the layer; etching an array of nanoholes in the substrate; depositing one or more metallic layers into the nanoholes to form an array of dots, disks or cylinders; and dissolving the dissolvable layer with a solvent to expose the dots, disks or cylinders. The dots, disks or cylinders can be included with two sets of microelectrodes for ultrahigh speed rotation of miniature motors, and/or can be designed with a magnetic configuration into miniature motors for uniform rotation speeds and prescribed angular displacement. The invention also includes modified diatom frustules, and miniature motors containing modified diatom frustules.

A solar selective coating includes a substrate, a cermet layer having nanoparticles therein deposited on the substrate, and an anti-reflection layer deposited on the cermet layer. The cermet layer and the anti-reflection layer may each be formed of intermediate layers. A method for constructing a solar-selective coating is disclosed and includes preparing a substrate, depositing a cermet layer on the substrate, and depositing an anti-reflection layer on the cermet layer.

Embodiments relate to a sputter chamber comprising both a target surface and an anode surface. The sputter chamber has both an ingress and an egress to allow passage of a gas. The sputter chamber further includes a target substrate. A secondary material flexibly changes the composition of the target substrate in-situ by changing coverage of the target by the secondary material. Gas entering the sputter chamber interacts with the changed composition of the target. The interaction discharges a plasma alloy and the alloy condenses on the anode surface in the sputter chamber. The condensed alloy produces an alloy film.

A method of depositing a coating on a substrate comprises simultaneously depositing a first material via a CVA process and a second material via a sputtering process; also described are coatings obtained therefrom and coated substrates.

Disclosed is a part comprising a metal substrate, a non-hydrogenated amorphous ta-C or aC carbon coating that coats the substrate, and an undercoat which is based on chromium (Cr), carbon (C) and silicon (Si) and is disposed between the metal substrate and the amorphous carbon coating and to which the amorphous carbon coating is applied, characterized in that the undercoat included, at its interface with the amorphous carbon coating, a ratio of silicon in atomic percent to chromium in atomic percent (Si/Cr) of 0.3 to 0.60, and a ratio of carbon in atomic percent to silicon in atomic percent (C/Si) of 2.5 to 3.5.

Coated tool comprising a coated surface, the coated surface comprising a substrate having a surface on which a coating is deposited, wherein the substrate is made of a material comprising cobalt, and wherein the coating comprises at least one boron-comprising layer, wherein the at least one boron-comprising layer comprises Al and the boron comprised in this layer is present as boride, thereby the boron-comprising layer is able to form further layers for providing a diffusion barrier layer effect, in particular for stopping diffusion of cobalt from the substrate surface to the coating, when the coated tool or the coated surface is exposed to temperatures in a range between approximately 600 and 1200° C.

The invention concerns a turbine component, such as a turbine blade or a distributor fin, for example, comprising a substrate made from single-crystal nickel superalloy, and a metal sublayer covering the substrate, characterised in that the metal sublayer comprises at least two elementary layers, including a first elementary layer and a second elementary layer, the first elementary layer being arranged between the substrate and the second elementary layer, each elementary layer comprising a γ′-Ni.sub.3Al phase, and optionally a γ-Ni phase, and in that the average atomic fraction of aluminum in the second elementary layer is strictly greater than the average atomic fraction of aluminum in the first elementary layer.

A low friction wear film includes a chromium layer provided on a surface of a metal substrate, a tungsten carbide layer provided on a surface of the chromium layer, and a diamond-like carbon layer as a top layer provided on a surface of the tungsten carbide layer. The tungsten carbide layer includes a chromium-tungsten carbide gradient layer and a tungsten carbide uniform layer. In the tungsten carbide layer, a tungsten-concentrated layer in which a tungsten simple substance is present is not provided at a boundary between the chromium-tungsten carbide gradient layer and the tungsten carbide uniform layer.

A superalloy workpiece includes a superalloy substrate and an interface layer (IF-1) of essentially the same superalloy composition directly on a surface of the superalloy substrate. A transition layer (TL) of essentially the same superalloy and superalloy oxides or a different metal composition and different metal oxides is on the interface layer (IF-1). The oxygen content of the transition layer increases from the interface layer (IF-1) towards a barrier layer (IF-2) of super alloy oxides or of different metal oxides.