Abstract: Provided is a steel cord for reinforcing rubber articles which, when applied to a belt of a tire, can attain lightweight without reducing the durability of the tire, and in particular, to a steel cord for reinforcing rubber articles in which the properties of a treat after rubberizing are excellent and a pneumatic radial tire using the same. Also provided is a steel cord for reinforcing rubber articles comprising a core formed by arranging two core filaments 1 in parallel without being twisted together, and N (2?N?4) sheath filaments 2 which are twisted together around the core. Letting the diameter of the core filament 1 be d1, and the diameter of the sheath filament 2 be d2, d1>d2.

Abstract: Provided is a steel cord for reinforcing rubber articles which, when applied to a belt of a tire, can attain lightweight without reducing the durability of the tire, and in particular, to a steel cord for reinforcing rubber articles in which the properties of a treat after rubberizing are excellent and a pneumatic radial tire using the same. Also provided is a steel cord for reinforcing rubber articles comprising a core formed by arranging two core filaments 1 in parallel without being twisted together, and N (2?N?4) sheath filaments 2 which are twisted together around the core. Letting the diameter of the core filament 1 be d1, and the diameter of the sheath filament 2be d2, d1>d2.

Abstract: A decorative part and a process for producing the decorative part. A first nitride layer containing at least one metal selected among hafnium, titanium, and zirconium is formed on the surface of a decorative part comprising a soft base made of a material selected among stainless steel, titanium and titanium alloys, brass, etc., and a second nitride layer containing at least one metal which is selected among hafnium, titanium, and zirconium and is different from that in the first nitride layer is formed on the first nitride layer to thereby form a primer layer. A multilayered hardened layer including a gold alloy layer is further formed as a finish layer on the primer layer.

Abstract: A personal ornament having an ornament base article made of a metal or the like; an underlayer, preferably nickel-free, formed on the base article; and a coloring layer constituted of an abrasion-resistant layer of 0.2-1.5 ?m thick formed by dry-plating on the surface of the underlayer and an outermost layer of 0.002-0.1 ?m thick formed by dry-plating on the surface of the abrasion-resistant layer. The coloring layer is a white hard coating film of a stainless-steel color which provides superior quality, high resistance to deterioration of appearance by scratching, and a high-quality image like a stainless steel film.

Abstract: A pneumatic radial tire having a belt layer with at least one circumferential belt having a plurality of corrugated or zigzag shaped steel cords extending along the tire circumferential direction, satisfying at least the relations represented by the following expressions: ?0.5?L1/L2?0.5, L2?0 When the residual stress is a tensile stress, the stress is a positive value, and when the residual stress is a compressive stress, the stress is a negative value. Also, when the steel cords of the circumferential belt are taken out, at the inside and the outside of bent portions of the steel cords which are taken out, the residual stress at the inside of bent portions of the filament of a sheath portion is L1 and the residual stress at the outside of bent portions of the filament of the sheath portion is L2.

Abstract: Provided by the present invention is a technique which can, in a pneumatic radial tire using corrugated steel cords in the circumferential bent, improve the durability of the corrugated steel cords in order to prevent fatigue rupture thereof caused by an increase in energy input. The present invention is a pneumatic radial tire which has a carcass 1 as the skeleton extending in a toroidal shape between a pair of bead portions on either side of the tire, as well as a belt layer 2 and a tread layer 5 successively arranged thereonto at the outer part in the tire radial direction. The belt layer 2 comprises at least one layer of circumferential belt 3 which comprises a plurality of corrugated or zigzag-shaped steel cords extending along the tire circumferential direction, and when the steel cords are removed from the circumferential belt 3, the bending radius of curvature (R) of the steel cords is within the range from not less than 18 mm to not more than 125 mm.

Abstract: A golden ornament includes a base material; a Ti coating film which is formed on a surface of the base material in an atmosphere of an inert gas other than nitrogen and whose Ti atom content is constant in the thickness direction; a TiN gradient coating film which is formed on the Ti coating film and whose N atom content has a gradient in the thickness direction; a TiN coating film which is formed on the TiN gradient coating film and whose contents of Ti atoms and N atoms are constant in the thickness direction; an Au—TiN mixture gradient coating film which is formed on the TiN coating film and whose Au atom content has a gradient in the thickness direction; and an Au—TiN mixture coating film which is formed on the Au—TiN mixture gradient coating film and whose contents of Au atoms, Ti atoms, and N atoms are constant in the thickness direction.

Abstract: A decorative part and a process for producing the decorative part. A first nitride layer containing at least one metal selected among hafnium, titanium, and zirconium is formed on the surface of a decorative part comprising a soft base made of a material selected among stainless steel, titanium and titanium alloys, brass, etc., and a second nitride layer containing at least one metal which is selected among hafnium, titanium, and zirconium and is different from that in the first nitride layer is formed on the first nitride layer to thereby form a primer layer. A multilayered hardened layer including a gold alloy layer is further formed as a finish layer on the primer layer.

Abstract: A personal ornament having an ornament base article made of a metal or the like; an underlayer, preferably nickel-free, formed on the base article; and a coloring layer constituted of an abrasion-resistant layer of 0.2-1.5 ?m thick formed by dry-plating on the surface of the underlayer and an outermost layer of 0.002-0.1 ?m thick formed by dry-plating on the surface of the abrasion-resistant layer. The coloring layer is a white hard coating film of a stainless-steel color which provides superior quality, high resistance to deterioration of appearance by scratching, and a high-quality image like a stainless steel film.

Abstract: The present invention provides personal ornaments having as an outermost layer a white ornamental coating film having platinum or a platinum alloy formed by dry-plating, including: an ornament base article made of a metal or ceramic, an underlayer formed on the surface on the base article, an abrasion resistant layer formed on the surface of the underlayer by dry-plating, and an ornamental coating layer having platinum or platinum alloy formed on the surface of the abrasion resistant layer by dry-plating. Also, the present invention provides personal ornaments having a coloring layer including an abrasion-resistant layer, a mixture layer and an outermost layer, the outermost layer being a white hard coating film having a noble metal or a noble metal alloy formed by dry-plating on the surface of the mixture layer.

Abstract: A golden ornament includes a base material; a Ti coating film which is formed on a surface of the base material in an atmosphere of an inert gas other than nitrogen and whose Ti atom content is constant in the thickness direction; a TiN gradient coating film which is formed on the Ti coating film and whose N atom content has a gradient in the thickness direction; a TiN coating film which is formed on the TiN gradient coating film and whose contents of Ti atoms and N atoms are constant in the thickness direction; an Au—TiN mixture gradient coating film which is formed on the TiN coating film and whose Au atom content has a gradient in the thickness direction; and an Au—TiN mixture coating film which is formed on the Au—TiN mixture gradient coating film and whose contents of Au atoms, Ti atoms, and N atoms are constant in the thickness direction.

Abstract: The present invention includes a personal ornament having a white coating layer and a method for making the same. The base article is made of metal and the white-colored stainless steel coating layer is formed by a dry plating process. The base metal may be ferrous or non-ferrous.

Abstract: The first personal ornament of the present invention is constituted of an ornament base article made of a metal or the like; an underlayer, preferably non-nickelic, formed on the base article; and a coloring layer constituted of an abrasion-resistant layer of 0.2-1.5 &mgr;m thick formed by dry-plating on the surface of the underlayer and an outermost layer of 0.002-0.1 &mgr;m thick formed by dry-plating on the surface of the abrasion-resistant layer. The coloring layer is a white hard coating film of a stainless-steel color. This ornament has a white coating film which gives superior quality, having high scratch resistance, not causing deterioration of appearance by scratching, and yet has high-quality image like a stainless steel film.

Abstract: A personal ornament having a white coating layer comprises a base article made of a metal, and a white-colored stainless steel coating layer formed by a dry plating process on at least a part of the surface of the base article. Another personal ornament having a white coating layer comprises a base article made of a nonferrous metal, an underlying plating layer formed on the surface of the base article, and a white-colored stainless steel coating layer formed by a dry plating process on at least a part of the surface of the underlying plating layer.

Abstract: The hard carbon coating-clad base material of the present invention comprises a base material, a substratal metal coating formed on the base material by a wet plating process, an intermediate metal coating comprising a titanium or chromium coating formed on the substratal metal coating by a dry plating process and a silicon coating formed on the titanium or chromium coating by a dry plating process, and a hard carbon coating formed on the silicon coating by a dry plating process. According to the present invention, a highly reliable hard carbon coating which is excellent in corrosion resistance, adhesion and abrasion resistance can be formed even on brass or an iron base material having poor corrosion resistance, such as SK steel and martensitic and ferritic stainless steels.

Abstract: The hard carbon coating-clad base material of the present invention comprises a base material, a substratal metal coating formed on the base material by a wet plating process, an intermediate metal coating comprising a titanium or chromium coating formed on the substratal metal coating by a dry plating process and a silicon coating formed on the titanium or chromium coating by a dry plating process, and a hard carbon coating formed on the silicon coating by a dry plating process. According to the present invention, a highly reliable hard carbon coating which is excellent in corrosion resistance, adhesion and abrasion resistance can be formed even on brass or an iron base material having poor corrosion resistance, such as SK steel and martensitic and ferritic stainless steels.

Abstract: The hard carbon coating-clad base material of the present invention comprises a base material, a substratal metal coating formed on the base material by a wet plating process, an intermediate metal coating comprising a titanium or chromium coating formed on the substratal metal coating by a dry plating process and a silicon coating formed on the titanium or chromium coating by a dry plating process, and a hard carbon coating formed on the silicon coating by a dry plating process. According to the present invention, a highly reliable hard carbon coating which is excellent in corrosion resistance, adhesion and abrasion resistance can be formed even on brass or an iron base material having poor corrosion resistance, such as SK steel and martensitic and ferritic stainless steels.

Abstract: A diamond-like carbon (DLC) film is formed on a portion of a reed blade in a high-speed loom which requires the highest wear resistance. When a stainless steel is used as the base material of the reed blade, the DLC film is formed through an intermediate layer comprising, e.g., a titanium carbide layer. Reed blades coated with a DLC film are arranged at the side portions of the reed where wear progresses quickly, while reed blades coated with hard films requiring a relatively low cost, or non-coated reed blades, are arranged in the central portion of the reed, thereby uniforming the blade wear throughout the entire reed. The reed is suitable to many types of fibers, ranging from natural to synthetic and new material fibers.