Cavitation erosion-resistant laser high-entropy alloying powder on stainless steel surface and preparation process thereof

A high-entropy alloy and stainless steel technology, applied in metal material coating process, heating inorganic powder coating, coating, etc., can solve the problem that the coating forming quality and surface continuity are difficult to meet the use requirements, and it is difficult to obtain component coatings, etc. problems, achieve excellent anti-cavitation performance and reduce brittleness
CN104561990AActive Publication Date: 2015-04-29SHENYANG POLYTECHNIC UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHENYANG POLYTECHNIC UNIV
Publication Date
2015-04-29

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Abstract

The invention provides a cavitation erosion-resistant laser high-entropy alloying powder on a stainless steel surface and a preparation process thereof and belongs to the technical field of surface engineering. The component of the high-entropy alloying powder comprises four metal elements, namely Co, Cr, Al and Ni and a non-metal element B; the additive amounts of the metal elements in the powder are equal in molar ratio and the molar number of the non-metal element B is x times that of other component powder, wherein x is greater than or equal to 0 but less than or equal to 1. By adopting a proper laser radiation process parameter, a high-entropy alloy coating which is combined with a stainless steel base material and is uniform and fine in tissue, free of cracks and excellent in cavitation erosion resistance can be prepared by virtue of a surface alloying technology of laser reaction synthesis.
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Description

Technical field:

[0001] The invention relates to a powder and a process method for preparing a cavitation-resistant high-entropy alloy coating material on the surface of a stainless steel base material by using laser reaction synthesis technology, and belongs to the technical field of surface engineering. Background technique:

[0002] As we all know, metal materials widely used until today, such as stainless steel (including steel), nickel-based alloys, cobalt-based alloys, titanium-based alloys, copper-based alloys, and palladium / platinum / gold-based alloys, etc., are named after their elements It is formed as a main element (generally more than 50%) as the base phase (body), supplemented by adding appropriate alloying elements, that is, the so-called single-element base alloy.

[0003] The performance of this type of alloy can be considered from the performance of the main element matrix, and the alloying process is relatively simple and easy to adjust. However, the tradi...

Claims

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