Abstract: A steel sheet is provided with a coating having at least one layer of zinc and a top layer of paint applied by cataphoresis. The zinc layer is deposited by a jet vapor deposition process in a deposition chamber maintained at a pressure between 6·10?2 mbar and 2·10?1 mbar. A fabrication method and an installation are also provided.

Abstract: A steel sheet is provided with a coating having at least one layer of zinc and a top layer of paint applied by cataphoresis. The zinc layer is deposited by a jet vapor deposition process in a deposition chamber maintained at a pressure between 6·10?2 mbar and 2·10?1 mbar. A fabrication method and an installation are also provided.

Abstract: A method for fabricating a substrate provided with a plurality of layers, includes: providing a steel substrate with an oxide layer including metal oxides on the steel substrate; providing a metal coating layer directly on the oxide layer, the metal coating layer including: at least 8% by weight nickel; at least 10% by weight chromium; and a remainder being iron and impurities from a fabrication process; and providing an anti-corrosion coating layer directly on the metal coating layer.

Abstract: Equipment for manufacturing a metal strip coated by a process that includes vacuum-depositing a layer of an oxidizable metal or an oxidizable metal alloy on a metal strip precoated with zinc or with a zinc alloy, then coiling the coated metal strip, then oxidizing a surface of the metal strip coated with the oxidizable metal or oxidizable metal alloy and treating the oxidized wound coil with a static diffusion treatment to obtain a strip having a coating that includes, in an upper portion, a layer of an alloy formed by diffusion of the oxidizable metal or the oxidizable metal alloy in all or part of the zinc or zinc alloy layer. The equipment includes a device for galvanizing the metal strip, a vacuum deposition coating device, and a static heat treatment device operating in a controlled atmosphere.

Abstract: A vacuum deposition facility 1 for continuously depositing, on a running substrate S, coatings formed from metal or metal alloy, the facility including an evaporation crucible 4 suited to supply metal or metal alloy vapor and including an evaporation pipe 7, a deposition chamber 2 suited to have the substrate S run through along a given path P and a vapor jet coater 3 linking the evaporation pipe to the deposition chamber, wherein the vapor jet coater further includes a repartition chamber 31 including at least one reheater 33 positioned within the repartition chamber and a vapor outlet orifice 32 including a base opening linking the vapor outlet orifice to the repartition chamber, a top opening through which the vapor can exit in the deposition chamber and two sides converging toward each other in the direction of the top opening.

Abstract: A vacuum deposition facility for continuously depositing, on a running substrate, coatings formed from metal or metal alloy, the facility including—a vacuum chamber and a device for running the substrate through the vacuum chamber along a given path, wherein the vacuum chamber further includes: a central casing including a substrate entry and a substrate exit located on two opposite sides of the central casing and a vapor jet coater, the inner walls of the central casing being suited to be heated at a temperature above the condensation temperature of the metal or metal alloy vapors, a vapor trap in the form of an external casing located at the substrate exit of the central casing, the inner walls of the vapor trap being suited to be maintained at a temperature below the condensation temperature of the metal or metal alloy vapors.

Abstract: A vacuum deposition facility for continuously depositing, on a running substrate, coatings formed from metal or metal alloy, and including: a central casing including a vapor jet coater, the inner walls of the central casing being suited to be heated at a temperature above the condensation temperature of the metal or metal alloy vapors, a vapor trap located at the substrate exit of the central casing, the inner walls of the vapor trap being suited to be maintained at a temperature below the condensation temperature of the metal or metal alloy vapors, the passage linking the central casing to the vapor trap including at least one thermal connector extending at least from the inner walls of the central casing to the inner walls of the vapor trap.

Abstract: A method deposits a metal alloy coating on a substrate using a vacuum deposition facility. The facility is equipped with a vapour generator/mixer comprising a vacuum chamber enclosure provided with an inlet and an outlet for the substrate. The enclosure includes a vapour deposition head and an ejector is provided to create a jet of metal alloy vapour of sonic velocity towards the surface of the substrate and perpendicular thereto. The ejector is in sealed communication with a separate mixer device, which is itself connected upstream to at least two crucibles respectively, these containing different metals in liquid form, each crucible being connected to the mixer by its own pipe. The method uses a series of partitions to create alternating layers of metal vapours. The metal vapours enter the mixer inlet of the mixer at a velocity from 5 to 50 m/s to provide better homogeneity.

Abstract: A method for fabricating a substrate provided with a plurality of layers, includes: providing a steel substrate with an oxide layer including metal oxides on the steel substrate; providing a metal coating layer directly on the oxide layer, the metal coating layer including: at least 8% by weight nickel; at least 10% by weight chromium; and a remainder being iron and impurities from a fabrication process; and providing an anti-corrosion coating layer directly on the metal coating layer.

Abstract: Substrate provided with a plurality of layers, at least one of which includes metal oxides and is topped directly by a metal coating layer that contains at least 8% by weight nickel and at least 10% by weight chromium, the remainder being iron, additional elements and the impurities resulting from the fabrication process, wherein this metal coating layer is topped directly by an anticorrosion coating layer. A corresponding fabrication method is also provided.

Abstract: A steel sheet is provided with a coating having at least one layer of zinc and a top layer of paint applied by cataphoresis. The zinc layer is deposited by a jet vapor deposition process in a deposition chamber maintained at a pressure between 6·10?2 mbar and 2·10?1 mbar. A fabrication method is also provided.

Abstract: A steel sheet is provided with a coating having at least one layer of zinc and a top layer of paint applied by cataphoresis. The zinc layer is deposited by a jet vapor deposition process in a deposition chamber maintained at a pressure between 6·10?2 mbar and 2·10?1 mbar. A fabrication method and an installation are also provided.

Abstract: The present invention relates to a vacuum deposition facility for depositing a metal alloy coating on a substrate (7), said facility being equipped with a vapour generator/mixer comprising a vacuum chamber (6) in the form of an enclosure provided with means for creating a vacuum state therein relative to the external environment and provided with means for the entry and exit of the substrate (7), while still being essentially sealed from the external environment, said enclosure including a vapour deposition head, called the injector (3), configured so as to create a jet of metal alloy vapour of sonic velocity towards the surface of the substrate (7) and perpendicular thereto, said ejector (3) being in sealed communication with a separate mixer device (14), which is itself connected upstream to at least two crucibles (11, 12) respectively, these containing different metals M1 and M2 in liquid form, each crucible (11, 12) being connected to the mixer (14) by its own pipe (4, 4?).

Abstract: Equipment for manufacturing a metal strip coated by a process that includes vacuum-depositing a layer of an oxidizable metal or an oxidizable metal alloy on a metal strip precoated with zinc or with a zinc alloy, then coiling the coated metal strip, then oxidizing a surface of the metal strip coated with the oxidizable metal or oxidizable metal alloy and treating the oxidized wound coil with a static diffusion treatment to obtain a strip having a coating that includes, in an upper portion, a layer of an alloy formed by diffusion of the oxidizable metal or the oxidizable metal alloy in all or part of the zinc or zinc alloy layer. The equipment includes a device for galvanizing the metal strip, a vacuum deposition coating device, and a static heat treatment device operating in a controlled atmosphere.

Abstract: The invention relates to a process for coating a metal strip, in which a layer of an oxidizable metal or an oxidizable metal alloy or a metal oxide is vacuum-deposited on a metal strip precoated with zinc or with a zinc alloy, the coated metal strip is then coiled, and the wound coil undergoes a static diffusion treatment so as to obtain a strip having a coating that comprises, in the upper portion, a layer of an alloy formed by diffusion of the oxidizable metal or the oxidizable metal alloy in all or part of the zinc or zinc alloy layer, and also to equipment for implementing the process.

Abstract: A method for the fabrication of a coated sheet is provided. The method includes the steps of providing a sheet in a deposition chamber, maintaining the deposition chamber at a pressure Pchamber, maintaining an ejection chamber that is located inside the deposition chamber at a pressure Peject and coating the sheet with zinc with a sonic vapor jet. A ratio of the pressures Pchamber to Peject is between 2·10?3 and 5.5·10?2.

Abstract: The present invention relates to a facility for the continuous vacuum deposition of a metal coating on a substrate in motion, comprising a vacuum deposition enclosure (24), at least one vapor jet deposition head (25,26) connected to an evaporator pot (9) designed to contain the coating metal in liquid form (11), through a vapor supply pipe (20) provided with a distribution valve (19), and a melting furnace (1) for said metal, said furnace being at atmospheric pressure, located below the lowest portion of the evaporator pot (9) and connected to the evaporator pot (9) by at least one automatic supply pipe (8) of the evaporator pot (9) provided with a supply pump (6) and by at least one liquid metal return pipe (8A,18) optionally provided with a valve (16,17), regulating means for the supply pump (6) further being present to regulate a determined liquid metal level in the evaporator pot (9), characterized in that it comprises, in each said supply and return pipes (8; 8A,18), a so-called heat valve area (7,13,15)

Abstract: A vacuum deposition facility for continuously depositing coatings formed from metal alloys having at least two metallic elements on a running substrate is provided. The vacuum deposition facility includes a vacuum deposition chamber, a substrate running through the vacuum deposition chamber and an evaporation crucible inside the vacuum deposition chamber. The evaporation crucible includes a heater and a bath of molten metal alloy which has at least two metallic elements in a predetermined and constant ratio. The evaporation crucible evaporates the molten metal alloy into a vapor. The vacuum deposition facility also includes a coater inside the vacuum deposition chamber and connected to the evaporation crucible. The coater sprays a face of the running substrate with the vapor at a sonic velocity in order to deposit a coating on the running substrate. The vapor includes the at least two metallic elements in the predetermined and constant ratio.

Abstract: Substrate provided with a plurality of layers, at least one of which includes metal oxides and is topped directly by a metal coating layer that contains at least 8% by weight nickel and at least 10% by weight chromium, the remainder being iron, additional elements and the impurities resulting from the fabrication process, wherein this metal coating layer is topped directly by an anticorrosion coating layer. A corresponding fabrication method is also provided.

Abstract: A steel sheet is provided with a coating having at least one layer of zinc and a top layer of paint applied by cataphoresis. The zinc layer is deposited by a jet vapor deposition process in a deposition chamber maintained at a pressure between 6·10?2 mbar and 2·10?1 mbar. A fabrication method is also provided.