Abstract:
A method for continously producing an electrical conductor made of an at least partially aluminium-based central core coated by continuous electroplating with at least one metal layer, including core surface pre-treatment, characterised in that it comprises the steps of (a) electrochemically copper-plating the core in an aqueous bath held at a temperature of 20-60 °C and containing KCN, CuCN, K2CO3 and KNaC4H4O6 with a current strength of 1-10 A/dm2; (b) rinsing at room temperature; (c) electrochemically tin-plating the core in an aqueous bath held at a temperature of 20-60 °C and essentially containing tin dissolved in methane sulphonic acid as well as optional additives, with a current strength of 1-100 A/dm2; and (d) rinsing in water at 60 °C.
Abstract:
A method for continously producing an electrical conductor made of an at least partially aluminium-based central core coated by continuous electroplating with at least one metal layer, including core surface pre-treatment, characterised in that it comprises the steps of (a) electrochemically copper-plating the core in an aqueous bath held at a temperature of 20-60 DEG C and containing KCN, CuCN, K2CO3 and KNaC4H4O6 with a current strength of 1-10 A/dm ; (b) rinsing at room temperature; (c) electrochemically tin-plating the core in an aqueous bath held at a temperature of 20-60 DEG C and essentially containing tin dissolved in methane sulphonic acid as well as optional additives, with a current strength of 1-100 A/dm ; and (d) rinsing in water at 60 DEG C.
Abstract:
The present invention relates to a tellurium-oxide glass composition for sealing glass to alloy metal or metals having a coefficient of thermal expansion greater than 16 ppm/°C, said composition comprising TeO 2 , ZnO, TiO 2 , optionally K 2 O and being substantially free of lead oxide, sodium oxide and vanadium oxide. The invention further relates to the use of the glass composition according to the invention for sealing glass to copper metal or to a copper alloy with an alloy or a metal having a coefficient of thermal expansion greater than 16 ppm/°C, more particularly aluminum alloys. The invention further relates to a connector comprising a copper or copper alloy contact, an insert and/or a housing made of metal or alloy having a coefficient of thermal expansion greater than 16 ppm/°C, and, as a glass-metal sealing material between the contact and the insert and/or housing, a tellurium-oxide glass having the composition according to the invention. Lastly, the invention relates to a glass-metal sealing method for a copper or copper alloy contact in an insert and/or housing made of metal or alloy having a coefficient of thermal expansion greater than 16 ppm/°C.
Abstract:
The present invention relates to a male electrical contact of twisted pin type comprising an electrical terminal formed by a strand comprising three central filaments made of nickel or made of copper and 7 peripheral filaments made of an Ni-Cr-Ti-Al alloy and a bulge in the central portion, it being possible for said alloy to optionally additionally comprise Co and/or Mo. The invention also relates to the use of this contact in a micro-D connector, advantageously for applications at an operating temperature ≤ 260°C.
Abstract:
Procédé de fabrication d'un contact électrique (100) dans lequel : b) on réalise un tube (30) en formant le bord d'un feuillard ; e) sans détacher le tube (30) du feuillard (12), on fixe un premier élément conducteur (20) dans une première extrémité (31) du tube, de telle sorte qu'une portion du tube reste vide du côté de la deuxième extrémité (37) de celui-ci. Contact électrique comportant un tube (30), et une borne de contact (20) dont une extrémité est fixée dans une première extrémité (31) du tube (30) ; et dans lequel une surface intérieure (32) du tube est recouverte par un revêtement de surface (16,18) dit revêtement interne, et l'épaisseur du revêtement interne, ou d'au moins une couche du revêtement interne, est au moins égale à 1 µm, voire 1,27 µm.
Abstract:
The invention concerns a low pass cable, comprising successively from its centre towards its periphery: a conductive core (10); a first dielectric layer (12); a magnetic absorption layer in ferromagnetic alloy with amorphous or nanocrystalline structure (14); and an insulating sheath (20).
Abstract:
The invention concerns a low pass cable, comprising successively from its centre towards its periphery: a conductive core (10); a first dielectric layer (12); a magnetic absorption layer in ferromagnetic alloy with amorphous or nanocrystalline structure (14); and an insulating sheath (20).