Preparation method of high-entropy alloy coating layer on surface of casting

A high-entropy alloy and coating technology, which is used in metal processing equipment, transportation and packaging, etc., can solve the problems of high requirements for substrates and targets, difficulty in forming high-entropy alloy coatings, and excessive heat input. The pouring temperature is easy to control, the large-scale industrial application prospect, and the operation controllability is strong.
CN106041031AActive Publication Date: 2016-10-26HOHAI UNIV CHANGZHOU
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
HOHAI UNIV CHANGZHOU
Publication Date
2016-10-26

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Abstract

The invention discloses a preparation method of a high-entropy alloy coating layer on a surface of a casting. The preparation method comprises the following steps: (S1) preparation of a prefabricated body: adhesive is added in raw material powder of the high-entropy alloy coating layer for mixing to form paste; the paste is pressed as a cylindrical prefabricated body; and the prefabricated body is dried; (S2) shaping: sand is used for manufacturing a molding cavity of a sand mold; after the sand mold is cured, a groove is formed in the specific part of a molding cavity wall part; and the prefabricated body in the step (S1) is put in the groove; and (S3) pouring: molten metal is poured in the molding cavity under normal temperature and normal pressure; and the prefabricated body is dissolved and dispersed under the heat effect of the molten metal, and is solidified to form the high-entropy alloy coating layer on the surface of the casting. After the step (S3), the high-entropy alloy coating layer is subsequently heated. The prepared high-entropy alloy coating layer is excellent in density, better in metallurgic bonding degree with a basal body, simple in needed equipment, convenient for operation and low in production cost.
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Description

technical field

[0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for preparing a high-entropy alloy coating on the surface of a casting. Background technique

[0002] Wear and tear is one of the main reasons for the failure of mechanical parts, which has a great impact on the service life and reliability of mechanical parts, which will cause a lot of economic losses and hinder the development of industry. With the rapid development of the economy, various sectors of the national economy have continuously improved the performance requirements of mechanical equipment, research and development of wear-resistant materials with better performance and reduce production costs, simplifying the process is still an important problem that material workers need to solve.

[0003] The high-entropy alloy is composed of 5 to 13 alloying elements, and the content of each element is 5% to 35% atomically. The existence of ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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