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Preparation method and application of ceramic preform

A prefabricated body and ceramic technology, which is applied in the field of preparation of ceramic prefabricated bodies, can solve problems such as being unable to apply to industrial production, unable to meet the needs of wear-resistant parts, and restricting long-term development, so as to improve wetting ability, increase thickness, and improve the use of workpieces. performance effect

Active Publication Date: 2014-03-19
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Choosing ceramic particles that are well infiltrated with molten metal will increase the cost and cannot be applied to industrial production; while the preparation of composite materials by negative pressure, sintering and other methods will be limited by equipment and cannot meet the needs of wear-resistant parts under various conditions. Material equipment also limits its rapid development

Method used

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  • Preparation method and application of ceramic preform
  • Preparation method and application of ceramic preform
  • Preparation method and application of ceramic preform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation method of the ceramic preform described in this embodiment is as follows:

[0032] (1) According to the mass ratio of water glass and 20 mesh zirconium corundum ceramic particles of 1:20, the water glass and the ceramic particles are uniformly mixed to make the water glass evenly adhere to the surface of the ceramic particles to obtain ceramic particles coated with water glass. ;

[0033] (2) Mix the titanium carbide powder and alumina powder thoroughly, and then add them to the ceramic particles coated with water glass obtained in step (1), so that the titanium carbide powder and alumina powder are uniformly coated on the surface of the ceramic particles , Make the surface of ceramic particles form a coating layer with good wettability with molten metal, such as figure 1 As shown, the addition amount of titanium carbide is 3% of the mass of ceramic particles, the powder size is 0.5um, the addition amount of alumina is 0.5% of the mass of ceramic particles, a...

Embodiment 2

[0038] The preparation method of the ceramic preform described in this embodiment is as follows:

[0039] (1) The silica sol and PVA are mixed in a ratio of 20:1 and then mixed with 16 mesh black corundum ceramic particles in a mass ratio of 1:24 to make the binder evenly adhere to the surface of the ceramic particles to obtain a bonded Agent-coated ceramic particles;

[0040] (2) Mix the boron carbide powder and zirconia powder thoroughly, and then add them to the ceramic particles coated with silica sol obtained in step (1), so that the boron carbide powder and zirconia powder are evenly coated on the surface of the ceramic particles , Make the surface of ceramic particles form a coating layer with good wettability with molten metal, wherein the addition of titanium carbide is 9% of the mass of ceramic particles, the powder size is 3um, and the addition of alumina is 1.2% of the mass of ceramic particles. The powder size is 25um;

[0041] (3) Fill the mixed materials in step (2) ...

Embodiment 3

[0045] The preparation method of the ceramic preform described in this embodiment is as follows:

[0046] (1) According to the mass ratio of polyaluminum chloride and 8 mesh silicon carbide ceramic particles of 1:28, the polyaluminum chloride and the ceramic particles are uniformly mixed to make the polyaluminum chloride uniformly adhere to the surface of the ceramic particles to obtain the polymerized Ceramic particles coated with aluminum chloride;

[0047] (2) Fully mix the silicon carbide powder and calcium oxide powder, and then add them to the polyaluminum chloride coated ceramic particles obtained in step (1), so that the silicon carbide powder and calcium oxide powder are evenly coated on the ceramic The surface of the particles makes the surface of the ceramic particles form a coating layer with good wettability with the molten metal. The addition of titanium carbide is 18% of the mass of the ceramic particles, the powder size is 12um, and the addition of alumina is 2.5 of...

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Abstract

The invention discloses a preparation method and application of a ceramic preform, belonging to the field of metal matrix composite. The preparation method comprises steps of mixing adhesive with ceramic particles, fully mixing powder of carbide such as silicon carbide and boron carbide with powder of oxide, then adding into adhesive coated ceramic particles to be mixed, filling the mixed material into a die so as to prepare the cellular porous ceramic preform, wherein a coating layer well wetted by molten metal is formed on the surface of the ceramic particle. The ceramic particles prepared by the method allow the ceramic particles of the metal matrix composite to be distributed more uniformly in the metal matrix, the composite layer is thick, the coated surface of the ceramic particle is easy to be wetted by molten metal, the bonding strength of the metal and the ceramic is greatly improved, and the service life of the composite is prolonged.

Description

Technical field [0001] The invention relates to a preparation method and application of a ceramic preform, and belongs to the technical field of metal matrix composite materials. Background technique [0002] In the fields of metallurgy, cement, power generation, etc., some parts must withstand high-strength wear. Single-component metal materials can no longer meet the production needs under such severe conditions. In comparison, advanced composite materials with superior performance are expected to be used in these More applications in the industrial field. As a key area of ​​the national science and technology development "Twelfth Five-Year Plan", its related research provides important support for improving the supply capacity of key materials, seizing the commanding heights of new material application technology and high-end manufacturing. Ceramic particle-reinforced metal matrix composite material, as a metal matrix composite material with wide application prospects, combin...

Claims

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Application Information

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IPC IPC(8): C04B35/628C04B38/00B22D19/02
Inventor 蒋业华侯占东卢德宏刘光亮李祖来周荣
Owner KUNMING UNIV OF SCI & TECH
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