Known protective coatings with a high Cr-content and silicon as an additive have brittle phases which become additionally brittle under the influence of carbon during use. The protective coating herein has a double metallic layer that only contains tantalum on the outside contents of the layers.

A perpendicular magnetic recording medium adapted for high recording density and high data recording rate comprises a non-magnetic substrate having at least one surface with a layer stack formed thereon, the layer stack including a perpendicular recording layer containing a plurality of columnar-shaped magnetic grains extending perpendicularly to the substrate surface for a length, with a first end distal the surface and a second end proximal the surface, wherein each of the magnetic grains has: (1) a gradient of perpendicular magnetic coercivity H.sub.k extending along its length between the first end and second ends; and (2) predetermined local exchange coupling strengths along the length.

A method comprising introducing a first casting material into a casting mold; applying directional solidification to the first casting material in the casting mold; introducing a second casting material into the casting mold, the second casting material having a different chemical composition than the first casting material; applying directional solidification to the second casting material in the casting mold; and forming a molded article, wherein the molded article comprises a first region

A high-temperature piping product is configured from a plurality of primary pipe members and a welding material. The primary pipe members are each made from an Ni-based forged alloy containing: Ni, Al, and at least one of Mo and W. The total content of the Mo and the W being 3-8 mass %. The Ni-based forged alloy exhibiting a -phase dissolution temperature of from 920 to 970 C., and the phase being precipitated in 30 volume % or more in a temperature range of from 700 to 800 C. The welding material is made from an Ni-based cast alloy having a cast structure formed by welding. The Ni-based cast alloy containing: Ni, Al, and at least one of Mo and W, the total content of the Mo and the W being 9-15 mass %, the Ni-based cast alloy exhibiting a -phase dissolution temperature of from 850 to 900 C.

A turbine component having a low residual stress ferromagnetic damping coating. The ferromagnetic damping coating may include a ferromagnetic damping material applied in powder form, which may be directed at a surface of the substrate at an application velocity so that it causes partial plastic deformation of the surface while adhering to the surface of the substrate to create a ferromagnetic damping coating. The ferromagnetic damping coating has a balanced coating residual stress, including a tensile quenching stress component and a compressive peening stress component. The resulting coated substrate exhibits a high damping capacity.

A composite metal foil and a method of manufacturing the same are provided. The composite metal foil includes at least a first metal layer and a second metal layer. The first metal layer is copper foil, nickel foil, stainless steel foil, or a combination thereof. The second metal layer is disposed on a surface of the first metal layer. A contact angle of a surface of the second metal layer to liquid lithium metal is lower than 90 degrees.

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 method of manufacturing a composite metal foil includes providing a first metal layer and forming a second metal layer on a surface of the first metal layer through electroplating. The first metal layer is copper foil, nickel foil, stainless steel foil, or a combination thereof. A contact angle of a surface of the second metal layer to liquid lithium metal is lower than 90 degrees.

A structure includes an Sn layer or an Sn alloy layer formed above a substrate, and an under barrier metal formed between the substrate and the Sn layer or Sn alloy layer. The under barrier metal is an Ni alloy layer containing Ni, and at least one selected from W, Ir, Pt, Au, and Bi, and can sufficiently inhibit generation of an intermetallic compound through a reaction, caused due to metal diffusion of a metal contained in the substrate, between the metal and Sn contained in the Sn layer or Sn alloy layer.

An article has a nickel-based alloy substrate having, in weight percent: 5.4-7.4 Re; 4.1-5.9 Ru; 3.0-6.2 Cr; 3.0-10.0 Co; 0.5-3.8 Mo; 3.0-6.0 W; 4.6-8.6 Ta; 5.0-6.4 Al; 0.050-0.30 Hf; no more than 0.50 all other elements, if any, individually; and no more than 2.0 all other elements, if any, combined. A nickel-based coating is on the substrate and comprising, in weight percent: 6.0-10.0 Al; 4.0-15.0 Cr; 11.0-15.0 Co; 0.1-1.0 Hf; 0.1-1.0 Si; 0.1-1.0 Y; up to 1.0 Zr if any; up to 7.0 Ta if any; up to 6.0 W if any; no more than 1.0 all other elements, if any, individually; and no more than 4.0 all other elements, if any, combined.