Abstract: A silver-plated product is produced by forming a surface layer of silver on a base material by electroplating at a liquid temperature of 10 to 35° C. and a current density of 3 to 15 A/dm2 in a silver plating solution so as to satisfy (32.6x?300)?y?(32.6x+200) assuming that a product of a concentration of potassium cyanide in the silver plating solution and a current density is y (g·A/L·dm2) and that a liquid temperature of the silver plating solution is x (° C.), the silver plating solution containing 80 to 110 g/L of silver, 70 to 160 g/L of potassium cyanide and 55 to 70 mg/L of selenium.

Abstract: A silver-plated product, wherein the preferred orientation plane of a surface layer of silver is {111} plane and wherein the ratio of the full-width at half maximum of an X-ray diffraction peak on {111} plane after heating the silver-plated product at 50° C. for 168 hours to the full-width at half maximum of an X-ray diffraction peak on {111} plane before the heating of the silver-plated product is not less than 0.5, is produced by forming the surface layer on a base material by electroplating at a liquid temperature of 12 to 24° C. and a current density of 3 to 8 A/dm2 in a silver plating solution which contains 80 to 110 g/L of silver, 70 to 160 g/L of potassium cyanide and 55 to 70 mg/L of selenium, so as to cause the product of the concentration of potassium cyanide and the current density to be 840 g·A/L·dm2 or less.

Abstract: A silver-plated product is produced by forming a surface layer of silver on a base material by electroplating at a liquid temperature of 10 to 35° C. and a current density of 3 to 15 A/dm2 in a silver plating solution so as to satisfy (32.6x?300)?y?(32.6x+200) assuming that a product of a concentration of potassium cyanide in the silver plating solution and a current density is y (g·A/L·dm2) and that a liquid temperature of the silver plating solution is x (° C.), the silver plating solution containing 80 to 110 g/L of silver, 70 to 160 g/L of potassium cyanide and 55 to 70 mg/L of selenium.

Abstract: A silver-plated product is produced by forming a surface layer of silver on a base material by electroplating at a liquid temperature of 10 to 35° C. and a current density of 3 to 15 A/dm2 in a silver plating solution so as to satisfy (32.6x?300)?y?(32.6x+200) assuming that a product of a concentration of potassium cyanide in the silver plating solution and a current density is y (g·A/L·dm2) and that a liquid temperature of the silver plating solution is x (° C.), the silver plating solution containing 80 to 110 g/L of silver, 70 to 160 g/L of potassium cyanide and 55 to 70 mg/L of selenium.

Abstract: A magnetic fluid sealing structure (1) for high-speed rotation for sealing a gap (S) between a shaft member (2) and a housing member (3) disposed around the shaft member (2), which are rotatable, includes: magnetic force generating means (4) which is fixed to the housing member (3) and generates a magnetic force; magnetic pole members (5) disposed on both sides in an axial direction of the magnetic force generating means (4); and a magnetic fluid (7) which is magnetically held between the magnetic pole members (5) and the shaft member (2) by the magnetic force of the magnetic force generating means (4) and seals the gap (S) therebetween, in which the shaft member (2) has a plurality of different material layers concentrically laminated in a radial direction, and an outermost diameter layer (23) of the shaft member (2), which holds the magnetic fluid (7), is made of a magnetic material.

Abstract: There is provided a silver-plated product which has good thermal resistance, bendability and wear resistance. In a silver-plated product wherein a surface layer of silver having a thickness of 10 ?m or less is formed on a base material of copper or a copper alloy, the full-width at half maximum of a rocking curve on a preferred orientation plane (preferably {200} or {111} plane) of the surface layer is caused to be 2 to 8°, preferably 3 to 7°, to improve the out-of-plane orientation of the surface layer to improve the thermal resistance, bendability and wear resistance of the silver-plated product.

Abstract: There is provided a silver-plated product wherein a surface layer of silver is formed on the surface of an underlying layer of nickel formed on a base material, the silver-plated product having a good bendability. In a silver-plated product which comprises a base material of copper or a copper alloy, an underlying layer of nickel formed on the base material, and a surface layer of silver formed on the surface of the underlying layer, the surface layer having a thickness of 10 ?m or less, the thickness of the underlying layer is 2 ?m or less, preferably 1.5 ?m or less, and the area fraction in {200} orientation of the surface layer is 15% or more, preferably 25% or more.

Abstract: There is provided a silver-plated product wherein a silver plating film having a thickness of not greater than 10 micrometers is formed on a base material of copper or a copper alloy and wherein the surface of the silver plating film has an arithmetic average roughness Ra of not greater than 0.1 micrometers, and the silver plating film has a {111} orientation ratio of not less than 35%.

Abstract: A silver-plated product is produced by forming a surface layer of silver on a base material by electroplating at a liquid temperature of 10 to 35° C. and a current density of 3 to 15 A/dm2 in a silver plating solution so as to satisfy (32.6x?300)?y?(32.6x+200) assuming that a product of a concentration of potassium cyanide in the silver plating solution and a current density is y (g·A/L·dm2) and that a liquid temperature of the silver plating solution is x (° C.), the silver plating solution containing 80 to 110 g/L of silver, 70 to 160 g/L of potassium cyanide and 55 to 70 mg/L of selenium.

Abstract: A magnetic fluid sealing structure (1) for high-speed rotation for sealing a gap (S) between a shaft member (2) and a housing member (3) disposed around the shaft member (2), which are rotatable, includes: magnetic force generating means (4) which is fixed to the housing member (3) and generates a magnetic force; magnetic pole members (5) disposed on both sides in an axial direction of the magnetic force generating means (4); and a magnetic fluid (7) which is magnetically held between the magnetic pole members (5) and the shaft member (2) by the magnetic force of the magnetic force generating means (4) and seals the gap (S) therebetween, in which the shaft member (2) has a plurality of different material layers concentrically laminated in a radial direction, and an outermost diameter layer (23) of the shaft member (2), which holds the magnetic fluid (7), is made of a magnetic material.

Abstract: There is provided a high-temperature superconducting (HTS) coil and a method of manufacturing the same, allowing simple and excellent affixation between side panels for cooling the superconducting coil and the HTS coil while inhibiting delamination of an HTS wire. The method of manufacturing the HTS coil including the rare-earth-based HTS wire of the superconducting coil and side panels for cooling the superconducting coil which are affixed thereto, windings of the rare-earth-based HTS wire of the superconducting coil being separated between turns, includes: utilizing a tape-like polytetrafluoroethylene (PTFE) film 3 as an insulator between the windings of the rare-earth-based HTS wire 2 to form a PTFE-film co-wound superconducting coil; impregnating the PTFE-film co-wound superconducting coil 4 with epoxy resin 6; and affixing the side panels 5 to the PTFE film co-wound superconducting coil 4.

Abstract: There is provided a silver-plated product which has a good bendability and which can restrain the rise of the contact resistance thereof even if it is used in a high-temperature environment, and a method for producing the same. In a silver-plated product wherein a surface layer of silver is formed on the surface of a base material of copper or a copper alloy, or on the surface of an underlying layer of copper or a copper alloy formed on the base material, the percentage of an X-ray diffraction intensity on {200} plane of the surface layer with respect to the sum of X-ray diffraction intensities on {111}, {200}, {220} and {311} planes of the surface layer is 40% or more.

Abstract: In a silver-plated product wherein a surface layer of silver is formed on the surface of a base material or on the surface of an underlying layer formed on the base material, the surface layer of silver is formed by electroplating in a silver plating bath which contains 1 to 15 mg/L of selenium and wherein a mass ratio of silver to free cyanogen is in the range of from 0.9 to 1.8, and thereafter, an aging treatment is carried out to produce a silver-plated product wherein an area fraction in {200} orientation of the surface layer is 15% or more.

Abstract: There is provided a silver-plated product which has good thermal resistance, bendability and wear resistance. In a silver-plated product wherein a surface layer of silver having a thickness of 10 ?m or less is formed on a base material of copper or a copper alloy, the full-width at half maximum of a rocking curve on a preferred orientation plane (preferably {200} or {111} plane) of the surface layer is caused to be 2 to 8°, preferably 3 to 7°, to improve the out-of-plane orientation of the surface layer to improve the thermal resistance, bendability and wear resistance of the silver-plated product.

Abstract: There is provided a silver-plated product wherein a surface layer of silver is formed on the surface of an underlying layer of nickel formed on a base material, the silver-plated product having a good bendability. In a silver-plated product which comprises a base material of copper or a copper alloy, an underlying layer of nickel formed on the base material, and a surface layer of silver formed on the surface of the underlying layer, the surface layer having a thickness of 10 ?m or less, the thickness of the underlying layer is 2 ?m or less, preferably 1.5 ?m or less, and the area fraction in {200} orientation of the surface layer is 15% or more, preferably 25% or more.

Abstract: A silver-plated product, wherein the preferred orientation plane of a surface layer of silver is {111} plane and wherein the ratio of the full-width at half maximum of an X-ray diffraction peak on {111} plane after heating the silver-plated product at 50° C. for 168 hours to the full-width at half maximum of an X-ray diffraction peak on {111} plane before the heating of the silver-plated product is not less than 0.5, is produced by forming the surface layer on a base material by electroplating at a liquid temperature of 12 to 24° C. and a current density of 3 to 8 A/dm2 in a silver plating solution which contains 80 to 110 g/L of silver, 70 to 160 g/L of potassium cyanide and 55 to 70 mg/L of selenium, so as to cause the product of the concentration of potassium cyanide and the current density to be 840 g·A/L·dm2 or less.

Abstract: In a silver-plated product wherein a surface layer of silver is formed on the surface of a base material or on the surface of an underlying layer formed on the base material, the surface layer of silver is formed by electroplating in a silver plating bath which contains 1 to 15 mg/L of selenium and wherein a mass ratio of silver to free cyanogen is in the range of from 0.9 to 1.8, and thereafter, an aging treatment is carried out to produce a silver-plated product wherein an area fraction in {200} orientation of the surface layer is 15% or more.

Abstract: There is provided a silver-plated product which has a good bendability and which can restrain the rise of the contact resistance thereof even if it is used in a high-temperature environment, and a method for producing the same. In a silver-plated product wherein a surface layer of silver is formed on the surface of a base material of copper or a copper alloy, or on the surface of an underlying layer of copper or a copper alloy formed on the base material, the percentage of an X-ray diffraction intensity on {200} plane of the surface layer with respect to the sum of X-ray diffraction intensities on {111}, {200}, {220} and {311} planes of the surface layer is 40% or more.

Abstract: There is provided a high-temperature superconducting (HTS) coil and a method of manufacturing the same, allowing simple and excellent affixation between side panels for cooling the superconducting coil and the HTS coil while inhibiting delamination of an HTS wire. The method of manufacturing the HTS coil including the rare-earth-based HTS wire of the superconducting coil and side panels for cooling the superconducting coil which are affixed thereto, windings of the rare-earth-based HTS wire of the superconducting coil being separated between turns, includes: utilizing a tape-like polytetrafluoroethylene (PTFE) film 3 as an insulator between the windings of the rare-earth-based HTS wire 2 to form a PTFE-film co-wound superconducting coil; impregnating the PTFE-film co-wound superconducting coil 4 with epoxy resin 6; and affixing the side panels 5 to the-PTFE film co-wound superconducting coil 4.

Abstract: There is provided a silver-plated product wherein a silver plating film having a thickness of not greater than 10 micrometers is formed on a base material of copper or a copper alloy and wherein the surface of the silver plating film has an arithmetic average roughness Ra of not greater than 0.1 micrometers, and the silver plating film has a {111} orientation ratio of not less than 35%.