Method for preparing non-sintered ceramic preform composite materials

A technology of composite materials and prefabricated bodies, which is applied in the field of ceramic composite materials, can solve problems such as inability to combine molten metal, complex preparation process, and limitations, and achieve the effects of improving interaction, simple process flow, and improving bonding effect

Inactive Publication Date: 2017-07-28
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Patent CN103769562A discloses a preparation method of active element sintered ZTA particles reinforced steel-based composite hammer, which utilizes active element powder and ceramic particles to be uniformly mixed and then mixed with ZTA particles under the action of a binder and filled into a mold for pressing. After sintering to obtain prefabricated body blocks, the disadvantage is that the porosity of the preformed body decreases after pressing, and it cannot be well compounded with molten metal, and the sintering process greatly increases the preparation cost of the prefabricated body, and the practical application is limited; patent CN102861905A A preparation method of alumina cermet-reinforced iron-based composite material is disclosed, which uses the alumina cermet skeleton blank pretreated by the active element Si to make a network-shaped ceramic prefabricated body through high-temperature sintering, molding, and vacuum casting , the process is complex, and the actual application cost is large; patent CN102513522A discloses a preparation method of ceramic particle reinforced steel-based reticular composite material, which uses powder sintering method to sinter the mixture of hard ceramic particles and alloy powder, and its preparation process Complicated, high cost, and limited application; patent CN103641487A discloses a preparation method and application of a ceramic preform, which is obtained by mixing the binder with ceramic particles, and then mixing with carbide powder and oxide powder, and filling the mold Prefabricated body, the prefabricated body is dried to 600~800°C, the drying conditions of the prefabricated body are complicated, which increases the production cost and reduces the production efficiency
[0004] The preparation method of ceramic preforms needs to consider factors such as the strength and porosity of ceramic preforms. The sintering method is adopted. The preparation process is complicated and the production cost is high, which limits the application and development of some composite materials.

Method used

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  • Method for preparing non-sintered ceramic preform composite materials

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Embodiment 1: as figure 1 and figure 2 Shown, a kind of preparation method of ZTA ceramic particles reinforced high-chromium cast iron-based honeycomb composite material, the specific steps are as follows:

[0028] (1) Weigh irregularly shaped zirconia-toughened alumina (ZTA) ceramic particles, in which the particle size of the ceramic particles is 10-12 meshes, and weigh silicon carbide ceramic powder, in which the quality of the ceramic powder is zirconia-toughened 8% of the mass of alumina (ZTA) ceramic particles, uniformly mix ceramic powder and binder to obtain mixture A, wherein the binder is silica sol, and the mass ratio of binder to ceramic powder is 1:4;

[0029] (2) Add the zirconia toughened alumina (ZTA) ceramic particles in step (1) to the mixture A obtained in step (1) and mix evenly to form a layer on the surface of the zirconia toughened alumina (ZTA) ceramic particles The coating layer of ceramic micropowder is then evenly filled into the honeycomb ...

Embodiment 2

[0033] Embodiment 2: as figure 1 and figure 2 Shown, a kind of preparation method of ZTA ceramic particles reinforced high manganese steel matrix honeycomb composite material, concrete steps are as follows:

[0034] (1) Weigh irregularly shaped zirconia-toughened alumina (ZTA) ceramic particles, in which the particle size of the ceramic particles is 90-120 mesh, and weigh boron carbide ceramic powder, in which the quality of the ceramic powder is zirconia-toughened 10% of the mass of alumina (ZTA) ceramic particles, uniformly mix ceramic powder and binder to obtain mixture A, wherein the binder is silica sol, and the mass ratio of binder to ceramic powder is 1:8;

[0035] (2) Add the zirconia toughened alumina (ZTA) ceramic particles in step (1) to the mixture A obtained in step (1) and mix evenly to form a layer on the surface of the zirconia toughened alumina (ZTA) ceramic particles The coating layer of ceramic micropowder is then evenly filled into the honeycomb mold cav...

Embodiment 3

[0039] Embodiment 3: as figure 1 and figure 2 Shown, a kind of preparation method of SiC reinforced aluminum matrix composite material, concrete steps are as follows:

[0040] (1) Weigh the irregularly shaped SiC ceramic particles, wherein the particle size of the ceramic particles is 120-150 mesh, weigh the alumina ceramic powder, wherein the quality of the ceramic powder is 5% of the mass of the SiC ceramic particles, and mix the ceramic powder with The binder is mixed evenly to obtain mixture A, wherein the binder is cellulose (PVA), and the mass ratio of binder to ceramic micropowder is 1:15;

[0041] (2) Add the SiC ceramic particles in step (1) to the mixture A obtained in step (1) and mix evenly, so that a layer of coating layer of ceramic micropowder is formed on the surface of the SiC ceramic particles, and then evenly filled into the mold cavity to prepare The prefabricated body with a layered structure, the preformed body is placed in a microwave oven for dehydra...

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Abstract

The invention relates to a method for preparing non-sintered ceramic preform composite materials, and belongs to the technical field of composite materials. The method includes uniformly mixing ceramic micro-powder and adhesive with each other to obtain mixtures A; adding ceramic particles into the mixtures A, uniformly mixing the ceramic particles and the mixtures A with one another and carrying out preparation molding and dehydration treatment to obtain ceramic preforms; pouring metal matrix liquid on the ceramic preforms to obtain the ceramic preform composite materials. The method has the advantages that spatial distribution structures of the ceramic particles, in metal matrixes, of the ceramic particle enhancement metal-based composite materials prepared by the aid of the method can be designed as needed, metal liquid can be advantageously subjected to cast-infiltration in the ceramic preforms, binding of the ceramic particles in the obtained non-sintered ceramic preform composite materials and the metal matrixes can be improved, the abrasion resistance can be improved, and accordingly the service lives of the non-sintered ceramic preform composite materials can be prolonged.

Description

technical field [0001] The invention relates to a method for preparing a non-sintered ceramic prefabricated composite material, which belongs to the technical field of ceramic composite materials. Background technique [0002] At present, the main method of preparing ceramic particle-reinforced metal matrix composites is to complete the composite of ceramic preforms and metal matrix through different casting processes after preparing ceramic preforms. [0003] Patent CN103769562A discloses a preparation method of active element sintered ZTA particles reinforced steel-based composite hammer, which utilizes active element powder and ceramic particles to be uniformly mixed and then mixed with ZTA particles under the action of a binder and filled into a mold for pressing. After sintering to obtain prefabricated body blocks, the disadvantage is that the porosity of the preformed body decreases after pressing, and it cannot be well compounded with molten metal, and the sintering p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/88C04B26/28C04B28/00C04B38/00C04B111/40
Inventor 蒋业华周谟金隋育栋卢德宏李祖来张孝足贾元伟王楠
Owner KUNMING UNIV OF SCI & TECH
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