An annealing separator composition for a grain-oriented electrical steel sheet according to an exemplary embodiment of the present invention contains a composite metal oxide containing Mg and a metal M, wherein the metal M is one or more of Be, Ca, Ba, Sr, Sn, Mn, Fe, Co, Ni, Cu, and Zn.

The present invention concerns the field of vehicle technology and industrial-plant technology and relates to a brake disc provided with protection from wear and corrosion and to a method for production thereof. The known solutions have the disadvantage that the coating for providing protection from corrosion and wear is applied to the frictional surfaces of the brake disc and is rubbed off straight away during the first braking operations. The present invention addresses the problem of providing a brake disc that has improved and durable protection from corrosion and wear. The significantly improved properties of the brake disc in terms of protection from corrosion and wear are achieved according to the invention by at least the region of the frictional surfaces (2) having an AlSi-based diffusion layer (3), which has a layer thickness of 0.1 mm to 0.6 mm and is formed in the process of interaction with the steel or grey cast iron of the metal main body (1). The brake disc according to the invention can be used for example in vehicles or as a braking system for industrial brakes or in wind turbines.

The present invention concerns the field of vehicle technology and industrial-plant technology and relates to a brake disc provided with protection from wear and corrosion and to a method for production thereof. The known solutions have the disadvantage that the coating for providing protection from corrosion and wear is applied to the frictional surfaces of the brake disc and is rubbed off straight away during the first braking operations. The present invention addresses the problem of providing a brake disc that has improved and durable protection from corrosion and wear. The significantly improved properties of the brake disc in terms of protection from corrosion and wear are achieved according to the invention by at least the region of the frictional surfaces (2) having an AlSi-based diffusion layer (3), which has a layer thickness of 0.1 mm to 0.6 mm and is formed in the process of interaction with the steel or grey cast iron of the metal main body (1). The brake disc according to the invention can be used for example in vehicles or as a braking system for industrial brakes or in wind turbines.

The invention relates to a steel component comprising a steel substrate having an anticorrosion coating present at least on one side of the steel substrate. This anticorrosion coating comprises a manganese-containing alloy layer. The manganese-containing alloy layer here forms the closest alloy layer of the anticorrosion coating to the surface. Moreover the manganese-containing alloy layer comprises iron and a further metal.

The object of the method is to obtain rolling mill rolls with a coating of tungsten carbide or of the alloys thereof, wherein the coating is a single layer and is carried out by means of high velocity thermal spraying.

The object of the method is to obtain rolling mill rolls with a coating of tungsten carbide or of the alloys thereof, wherein the coating is a single layer and is carried out by means of high velocity thermal spraying.

A coated article including an article having a surface; an oxidation resistant bond coat layer deposited on the surface, the oxidation resistant bond coat layer comprising a metal silicide phase, a crystalline ceramic phase and an amorphous ceramic phase, wherein the metal silicide phase has an aspect ratio greater than 1:1 but less than 50:1.

Provided are solar collection energy storage and energy conversion or chemical conversion systems. Also provided are tubing components, such as for solar receivers, including Mo and having a MoSiB coating on an external surface. The systems can include a solar receiver containing a heat transfer material or chemically reacting material and can operate at temperatures of 700° C. or higher. The solar receiver can include tubing components selected from a Mo tubing component, a MAX phase material tubing component, a MoSiB composite tubing component, or a combination thereof. The Mo component, when present, can include a coating on surfaces of the Mo component that operate above 700° C.

A bi-layer protective coating for a metal component, the bi-layer protective coating comprising a bond coating that is metallurgically fused to a substrate of the metal component, wherein the bond coating comprises one or more rare metals and a top coating that is mechanically bonded to the bond coating, wherein the top coating comprises one or more metal oxides, or one or more metal carbides.

A steel piston with an engineered coating is provided. A high thermal conductivity material, for example copper, is disposed on first regions of a combustion bowl to reduce hot spots in the piston. A low thermal conductivity material, for example a ceramic, is disposed on second regions of the combustion bowl to reduce loss of heat through the piston. The high thermal conductivity material disposed on the combustion bowl has a surface roughness (R.sub.a) of less than 5 μm to help reflect IR radiation and promote fuel flow. The low thermal conductivity material disposed on the combustion bowl has a surface roughness (R.sub.a) of less than 3 μm to promote fuel flow. The low thermal conductivity material is also disposed on the bowl rim and top ring land, and has a surface roughness (R.sub.a) of greater than 8 μm on the bowl rim and top ring land to retard gas flow.