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Method for coating surface of reinforcement in composite material

A composite material and surface coating technology, applied in the field of reinforcement surface coating, can solve the problems of incomplete coverage, uneven structure, poor compactness, etc., and achieve the effect of improved wettability, excellent mechanical properties, and low cost

Inactive Publication Date: 2012-11-21
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of non-uniform coating structure, poor compactness and incomplete coverage in the existing reinforcement surface coating method, and to provide a method for coating the reinforcement surface in composite materials

Method used

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  • Method for coating surface of reinforcement in composite material
  • Method for coating surface of reinforcement in composite material
  • Method for coating surface of reinforcement in composite material

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Experimental program
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specific Embodiment approach 1

[0008] Specific Embodiment 1: The method for coating the reinforcement surface in the composite material in this embodiment is realized according to the following steps: 1. Mix 5-80 parts of reinforcement and 20-95 parts of metal powder in parts by mass, and then place Perform ultrasonic cleaning in absolute ethanol for 5 minutes to obtain a mixed powder; 2. Pour the mixed powder into distilled water or saline solution to obtain a mixture, and then heat it at a temperature of 50-200°C for 10 minutes-5 hours, and stir to obtain a suspension Turbid liquid, after static precipitation for 1 to 2 minutes, remove the precipitate, take the suspended matter, that is, the reinforcement; 3. Place the reinforcement in a sintering furnace, and sinter for 0.5 to 3 hours at a sintering temperature of 400 to 1000 ° C to complete the composite Surface coating of the reinforcement in the material; the reinforcement in step 1 is borate whisker, silicon carbide whisker, silicon carbide particles,...

specific Embodiment approach 2

[0010] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in step 1, 5 parts of reinforcement and 95 parts of metal powder are mixed in parts by mass. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0011] Embodiment 3: The difference between this embodiment and Embodiment 1 is that in step 1, 80 parts of reinforcement and 20 parts of metal powder are mixed in parts by mass. Other steps and parameters are the same as those in Embodiment 1.

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Abstract

The invention discloses a method for coating a surface of reinforcement in a composite material, and relates to a method for coating a surface of reinforcement. The method can be used for solving the problems of coated tissue non-uniformity, poor compactness and coverage incompleteness in the conventional method for coating the surface of the reinforcement. The method comprises the following steps: 1, mixing reinforcement with metal powder, and obtaining mixed powder after ultrasonic cleaning; 2, pouring the mixed powder into distilled water or a salt solution, heating, coating, and then taking out the reinforcement; and 3, sintering the reinforcement. According to the method for coating the surface of the reinforcement in the composite material, a netlike structural coating is uniformly covered on the surface of the coated reinforcement, and the coating has small and compact tissues; and in the later composite material preparation process, the wetting property between the reinforcement and a substrate is greatly promoted, and the interface reaction between the reinforcement and the substrate is effectively controlled. By utilizing the method for coating the surface of the reinforcement in the composite material, the surface state of the reinforcement can be preferably regulated, and a technical guarantee is provided for the later prepared composite material to achieve excellent mechanical property.

Description

technical field [0001] The present invention relates to methods for the surface coating of reinforcements. Background technique [0002] Metal matrix composites have excellent mechanical and physical properties and have been widely used in many fields. However, there are often a large number of void defects at the interface between the reinforcement and the matrix of composite materials. The root cause is that the wettability between the molten metal matrix and the reinforcement is not good during the preparation of the composite material; After the reaction is severely damaged, these problems make the actual performance of metal matrix composites greatly deviate from its expected ideal performance. In summary, improving the wettability between the matrix and the reinforcement and controlling the degree of interfacial reaction by coating the surface of the reinforcement is an essential step in the preparation of metal matrix composites. [0003] At present, the method of c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/04C22C101/14C22C101/10C22C101/22
Inventor 唐莎巍胡津柳超
Owner HARBIN INST OF TECH
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