A part includes a base material, a colored layer, an intermediate layer, and a water-repellent-surface layer. The colored layer contains 35 at % to 99 at % of C, 0 at % to less than 40 at % of Cr, 0 at % to less than 15 at % of N, and more than 0 at % to less than 15 at % of O. The intermediate layer contains at least one metal atom selected from Cr, Zr, and Si; and an oxygen atom. The intermediate layer exhibits a sputtering time of 0.5 minutes or more to 9 minutes or less.

A component for exposure to a combustion chamber of a diesel engine and/or exhaust gas, such as a cylinder liner or valve face, is provided. The component includes a thermal barrier coating applied to a body portion formed of steel. A layer of a metal bond material is first applied, followed by a gradient structure including a mixture of the metal bond material and a ceramic material, followed by a layer of the ceramic material. The ceramic material includes at least one of ceria, ceria stabilized zirconia, yttria stabilized zirconia, calcia stabilized zirconia, magnesia stabilized zirconia, and zirconia stabilized by another oxide. The thermal barrier coating is applied by thermal spray or HVOF. The thermal barrier coating has a porosity of 2% by vol. to 25% vol., a thickness of less than 1 mm, and a thermal conductivity of less than 1.00 W/m.Math.K.

A piston for a diesel engine is provided. The piston includes a thermal barrier coating applied to a crown formed of steel. A layer of a metal bond material is first applied to a combustion surface of the crown, followed by a gradient structure including a mixture of the metal bond material and a ceramic material, followed by a layer of the ceramic material. The ceramic material includes at least one of ceria, ceria stabilized zirconia, yttria stabilized zirconia, calcia stabilized zirconia, magnesia stabilized zirconia, and zirconia stabilized by another oxide. The thermal barrier coating is applied by a thermal spray process or HVOF. The thermal barrier coating has a porosity of 2% by vol. to 25% vol., based on the total volume of the thermal barrier coating, a thickness of less than 1 mm, and a thermal conductivity of less than 1.00 W/m.Math.K.

The present invention relates to a protective layer for TiAl materials for affording protection against oxidation, said protective layer having a layer sequence which, proceeding from the inner side facing toward the TiAl material (1), has an inner aluminum oxide layer (5), a first gradient layer (6) comprising aluminum and a base metal with a base metal content increasing outward toward the surface side, a base metal layer (7), a second gradient layer (8) comprising aluminum and a base metal with an aluminum content increasing outward toward the surface side, and an outer aluminum oxide layer (9), and also to a method for the production thereof.

An abrasion-resistant and friction-reduced coating for metal components is provided. The coating includes an inner layer, an intermediate layer and an outer layer. The inner layer is intended to be applied to the metal component and has at least one layer selected from: a metal layer, a metal-carbide layer, a metal-nitride layer, a metalcarbide- nitride layer and a metal-containing hydrocarbon layer. The intermediate layer includes at least one layer of amorphous carbon and the outer layer includes a WC:H layer or a a-C:H* layer. A maximum layer thickness of the coating is at most 5 m. The coating is suitable in particular as a piston coating for use in internal combustion engines.

Turbine engine components are provided that have a repaired thermal barrier coating, along with their methods of formation and repair. The turbine engine component includes a thermal barrier coating on a first portion of a surface of a substrate; a repaired thermal barrier coating on a second portion of the surface of the substrate; and a ceramic coat on the outer bond coat. The thermal barrier coating includes an inner bonding layer and a first ceramic layer, with the inner bonding layer being positioned between the substrate and the first ceramic layer. The repaired thermal barrier coating generally includes an inner bond coat on the surface of the substrate and an outer bond coat on the inner bond coat. The inner bond coat is formed from a cobalt-containing material, while the outer bond coat is substantially free from cobalt.

The invention relates to a carbon-based coating (2) which as well as carbon as principal ingredient has at least one first element selected from a group consisting of the transition metals from groups 3 to 10 of the Periodic Table of the Elements, the carbon in the coaling (2) being present predominantly in sp.sup.2-hybridized form, and the coating (2) comprising at least one further element from a group encompassing silicon, germanium, aluminum, and the transition metals from groups 3 to 10 of the Periodic Table of the Elements, with the proviso that said at least one further element is not the same as the first element, and the cumulative fraction of said at least one further element in the coating (2) is between 0.1 at % and 5 at %, and the cumulative fraction of said at least one first element is between 0.5 at % and 10 at %.

Disclosed is a hard film based on tungsten carbide excellent in wear resistance, wherein the composition of the film is defined by W.sub.1-x-yC.sub.xM.sub.y, where 0.01y0.2, 0.50x/(1xy)4.0, and M is one or more selected from Co, Ni, Fe and Cu.

A method applies one or more films of polynuclear aluminum oxide hydroxide and polynuclear chromium hydroxide to a metal substrate. A method thermally treats the metal substrate with the one or more films at a temperature of at least 250 C., the thermal treatment reducing the polynuclear aluminum oxide hydroxides and the polynuclear chromium hydroxides to at least one layer of aluminum-chromium oxide.

The disclosed technology generally relates to semiconductor structures and their fabrication, and more particularly to diffusion barrier structures containing Ti, Si, N and methods of forming same. A method of forming an electrically conductive diffusion barrier comprises providing a substrate in a reaction chamber and forming a titanium silicide (TiSi) region on the substrate by alternatingly exposing the substrate to a titanium-containing precursor and a first silicon-containing precursor. The method additionally comprises forming a titanium silicon nitride (TiSiN) region on the TiSi region by alternatingly exposing the substrate to a titanium-containing precursor, a nitrogen-containing precursor and a second silicon-containing precursor. The method can optionally include, prior to forming the TiSi region, forming a titanium nitride (TiN) region by alternatingly exposing the substrate to a titanium-containing precursor and a nitrogen-containing precursor.