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Method for coating a substrate and metal alloy vacuum deposition facility

A metal alloy, vacuum deposition technology, applied in vacuum evaporation plating, metal material coating process, coating and other directions, can solve the problems of coating pollution and complex coating

Active Publication Date: 2010-03-24
ARCELORMITTAL INVESTIGACION Y DESARROLLO SL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Also, obtaining a coating of constant composition over a large length of substrate is complicated in this type of method, as this requires very precise control of the thickness of each layer over time.
[0010] Finally, diffusion treatment can indeed form alloys, but this can also cause elements of the substrate to diffuse into the coating, thereby contaminating the coating at the interface with the substrate.

Method used

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  • Method for coating a substrate and metal alloy vacuum deposition facility
  • Method for coating a substrate and metal alloy vacuum deposition facility
  • Method for coating a substrate and metal alloy vacuum deposition facility

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Embodiment Construction

[0048] The following description will refer to zinc alloy coatings containing magnesium, but obviously the device according to the invention is not limited thereto and various other coatings based on metal alloys can be deposited.

[0049] figure 2 More specifically a first embodiment of the device according to the invention is shown, in which the device 1 comprising the vacuum deposition chamber 2 can be seen. The chamber 2 is preferably kept at 10 -8 to 10 -4 under the pressure of bar. The chamber has an inlet gate and an outlet gate (not shown) between which a substrate S, such as a steel belt, travels.

[0050] Depending on the type and shape of the substrate, the substrate S may be advanced by any suitable device. In particular, it is possible to use revolving support rollers, on which the steel strip can be pressed.

[0051]Opposite the face of the substrate S to be coated is placed a small extraction chamber 7 with a slit, the size of which is close to that of the...

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Abstract

The invention relates to a method for coating a substrate (S) by continuously depositing on said substrate (S) a layer of a metal alloy including at least two metallic elements using a vacuum deposition facility (1) that comprises a vapour jet coating device (7) for spraying the substrate (S) with a vapour containing the metallic elements in a predetermined and constant relative proportion, wherein the vapour is previously accelerated to a sonic speed. The method is particularly intended for depositing Zn-Mg coatings. The invention also relates to a continuous metal alloy vacuum deposition facility (1) for implementing said method.

Description

technical field [0001] The present invention relates to a method for the continuous coating of substrates and a vacuum deposition apparatus for coatings formed of metal alloys, such as alloys of zinc and magnesium, more particularly, but not exclusively, for coating steel strip. Background technique [0002] Various methods are known for depositing metallic coatings composed of alloys onto substrates such as steel strip. Mention may be made, among others, of thermal dip coating, electrodeposition or various vacuum deposition methods, such as vacuum evaporation or magnetron sputtering. [0003] Thus, a vacuum evaporation method is known, as described in WO 02 / 06558, which consists in co-evaporating two elements in one chamber in order to mix the vapors of these components before proceeding to the deposition on the substrate. [0004] However, the industrial implementation of this method is difficult and cannot be considered for production in which a stable coating compositio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/16C23C14/24C23C14/56
CPCC23C14/24C23C14/16C23C14/562C23C16/06C23C14/56C23C16/45563
Inventor P·乔奎特E·希尔伯伯格B·施米茨D·查雷克斯
Owner ARCELORMITTAL INVESTIGACION Y DESARROLLO SL
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