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Method for preparing ceramic fiber and ceramic particle mixed composite coating on steel surface

A technology of ceramic fiber and composite materials, which is applied in the field of material processing engineering, can solve the problems of surface pollution, low bonding strength, and easy peeling of reinforced particles, and achieve small size, clean surface, and small whisker aspect ratio loss. Effect

Inactive Publication Date: 2010-05-12
江阴东大新材料研究院
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  • Abstract
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Problems solved by technology

The main disadvantage of the external addition method is that the surface of the reinforced particles is easily polluted, the bonding strength is low, and it is easy to peel off

Method used

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  • Method for preparing ceramic fiber and ceramic particle mixed composite coating on steel surface
  • Method for preparing ceramic fiber and ceramic particle mixed composite coating on steel surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1), making ceramic fiber prefabricated blocks

[0023] a. First soak ceramic whiskers (100g) in distilled water and stir and disperse them with a marine screw agitator for 4-6 hours. On the electric drill, put the stirring head into the beaker, stir and disperse for 4-6 hours, and pour out the water on the upper part of the whiskers after precipitation.

[0024] b. Add 1 g of water-soluble organic sol to the soaked ceramic whiskers. The mass ratio of the water-soluble organic sol is composed of: 80 parts of water, 3 parts of polyvinyl alcohol, 3 parts of glycerol, and 3 parts of silica sol .

[0025] c. After adding the water-soluble organic sol, perform ultrasonic oscillation and stirring. The output power of the ultrasonic wave is 150W-250W, and the oscillation and stirring time is 4-6 hours.

[0026] d. Pour the ceramic whiskers containing the water-soluble organosol into a mold with a filter screen at the bottom to filter.

[0027] e. According to the volume fra...

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Abstract

The invention relates to a method for preparing a ceramic fiber and ceramic particle mixed composite coating on steel surface, which is applied to production of composite armored plates and wear-resistant and corrosion-resistant composite plates. The method comprises the following steps: soaking ceramic whiskers in distilled water, and stirring to disperse for 4 to 6 hours; adding water soluble organic sol in the soaked ceramic whiskers; performing ultrasonic oscillation and mixing; preparing a ceramic fiber precast block; drying the ceramic fiber precast block in a vacuum drying furnace or a drying furnace with protective argon; and putting a steel plate in a liquid forging die, putting the ceramic fiber precast block on the surface of the steel plate, preheating the die and the steel plate, casting a thermit reaction product onto the ceramic fiber precast block in the die for liquid forging, and preparing the steel plate with a metal matrix composite coating strengthened by ceramic fiber and ceramic particle multi-phase mixed ceramic. In the method, the strengthened particle surface is not polluted and has high bonding strength; and the method has simple and reliable process, and is easy to promote.

Description

(1) Technical field [0001] The invention relates to a method for preparing a ceramic fiber and ceramic particle hybrid reinforced composite material coating on a steel surface. It can be applied to the production of composite armor plates and wear-resistant and anti-corrosion composite plates. It belongs to the technical field of material processing engineering. (2) Background technology [0002] At present, most ceramic particle reinforced metal matrix composites are integrally reinforced. However, in many cases, it is not required that the material as a whole be reinforced. Take the track shoe of a tank as an example: only the part in contact with the ground surface needs to have very high wear resistance, while the rest needs to have very good toughness to prevent failure due to brittle fracture during use; another example is an amphibious vehicle The lower surface of the bottom deck needs good wear resistance and corrosion resistance, but at the same time considering ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/14
Inventor 陈威谭佃龙汤秀山刘礼华李吉峰朱磊郑召全
Owner 江阴东大新材料研究院
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