To provide a magnesium alloy with improved corrosion resistance by surface modification, and a production method thereof. (1) The surface-modified magnesium alloy comprising: a magnesium alloy having an arbitrary shape; a magnesium fluoride layer formed by fluorination of the surface of the magnesium alloy; and a diamond-like carbon layer formed on the magnesium fluoride layer. (2) The method comprising: subjecting a surface of a magnesium alloy having an arbitrary shape to fluorination treatment to form a magnesium fluoride layer on the surface of the magnesium alloy, and then subjecting the magnesium alloy with the magnesium fluoride layer to be placed in a high-frequency plasma CVD device such that a source gas containing carbon is introduced to form a diamond-like carbon layer on the magnesium fluoride layer.

A coated tool is provided which is capable of inhibiting occurrence of chipping, peeling-off, or the like of a diamond layer by enhancing fracture resistance, and which has the diamond layer with high wear resistance. The coating tool is, for example, a drill having a diamond layer coated on a surface of a base material. The diamond layer has a first coating layer located close to the base material, and a second coating layer located on the first coating layer. A mean particle size of second diamond particles constituting the second coating layer is smaller than a mean particle size of first diamond particles constituting the first coating layer. The diamond layer contains hydrogen, and a hydrogen content in the second coating layer is larger than a hydrogen content in the first coating layer.

A cutting tool has a substrate. A surface of the substrate for the cutting tool is covered with a hard film. In the cutting tool, the hard film has a root-mean-square slope Rq in a surface of the hard film of 0.060 or less.

A surface of a steel material cut to a desired shape and carbonitrided is heated by excitation and thereafter repeatedly heated/cooled a predetermined number of times, such that an ultrafine crystal layer is formed immediately under the surface of the steel material and at least a predetermined number of cracks are formed under the formed ultrafine crystal layer, thereby enabling to increase toughness of the surface or immediately thereunder and enhance tenacity and inhibiting growth of cracks.

The present invention relates to a method for coating a substrate, preferably a drill, wherein at least one first HiPIMS layer is applied by means of a HiPIMS process. Preferably, at least one second layer is applied to the first HiPIMS layer by means of a coating process that does not contain a HiPIMS process.

An anti-plasma coating formed on a surface of a component in a plasma chamber includes an insulation layer on the surface and a plasma-resistant layer on the insulation layer. The plasma-resistant layer includes one or more stacks, where each stack includes a crystalline layer and an amorphous layer. The anti-plasma coating improves a lifetime of the component in the plasma chamber with high-energy plasma sources.

A method for producing a selective diamond-coated substrate, wherein the diamond-coated substrate includes: a substrate having surfaces including cemented carbide material, areas selected to be coated, and areas not selected to be coated; and one or more diamond coatings on the areas selected to be coated, the method including following steps in order: a first masking step, wherein the areas not selected to be coated but could be chemically attacked during a chemical pre-treatment step, are masked by applying a latex-mask covering these areas; one or more chemical pre-treatment steps; a mask-removing step, wherein the latex-mask is removed; a second masking step, wherein the areas of the substrate surfaces from which the latex-mask was removed and not selected to be coated but could be coated with one or more diamond coatings during one or more coating steps, are covered with one or more masking-covers; and one or more coating steps.

The invention relates to a workpiece carrier device (1) for holding and moving workpieces (15), having: a workpiece carrier (2) for receiving workpieces (15), which is mounted on a main frame (4) so as to rotate about an axis (3); a drive part, which can likewise rotate about the axis (3) relative to the workpiece carrier (2); and multiple workpiece holders (5), which are arranged on the workpiece carrier (2) in a ring around the drive axis and are mounted on the workpiece carrier (2) so as to rotate about holder axes (6) which are spaced from the drive axis. The holder axes (6) run in such a way in relation to the axis (3) that the workpiece holders (5) form a conical crown arrangement (7). The invention further relates to a coating method using the workpiece carrier device (1) according to the invention and to workpieces or substrates (15) coated by means of the coating method (e.g, pins, pen injectors, balls, ball pins, pistons, nozzle needles etc.).

Coated forming tool for processing of plastics materials or aluminum or aluminum alloy materials, comprising a substrate having a substrate surface, wherein the substrate surface is coated with a coating formed of one or more layers, wherein the coating comprises a SiCN-based layer having element composition in atomic percentage corresponding to Si.sub.aC.sub.bN.sub.cX.sub.d with 50<a+b+c100, 0d<60, preferably 0d<50, wherein X is one or more elements selected from the elements hydrogen, oxygen, titanium, chromium, and/or aluminum.

An example shaft, such as a crankshaft, has a coated wear sleeve disposed thereon. The coating on the wear sleeve provides tribological and/or mechanical benefits. The coating has a lower coefficient of kinetic friction than a conventional wear sleeve. The coating may further have a relatively high hardness. The coating may include a diamond like carbon (DLC) film or a metal-doped DLC (Me-DLC) film, such as tungsten (W)-doped DLC (W-DLC) film. The coating may be deposited on a bulk portion of the wear sleeve using physical vapor deposition (PVD) or similar processes. The coated wear sleeve is configured to engage and make contact with a static seal. The static seal includes elements that make contact with the coated wear sleeve while the shaft and coated wear sleeve rotate. The reduced friction, due to the coating, enhances the lifetime of the static seal.