Preparation method of ceramic phase multi-component composite preform

A composite material and multi-component technology, applied in the field of materials, to achieve the effect of improving mechanical and physical properties, improving performance, and improving organizational structure

Active Publication Date: 2014-07-23
张强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the traditional production methods of prefabricated parts in the industry are powder metallurgy, ultrasonic vibration method, mechanical stirring method, vacuum smelting method and dry pressing method, but these methods have a common defect, that is, they cannot effectively solve the problem of prefabricated parts. Reasonably control the uniform dispersion of nanoparticles and whiskers during the production process

Method used

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  • Preparation method of ceramic phase multi-component composite preform

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Embodiment 1

[0029] The preparation method of the ceramic phase multi-component composite material preform of this embodiment consists of the following steps:

[0030] 1. Preparation of slurry

[0031] Add 5 parts by mass of polyethylene oxide to 1000 parts by mass of normal temperature water, stir for 3 to 5 hours, and dissolve uniformly to prepare an aqueous solution of polyethylene oxide, add 80 parts by mass of alumina ceramic whiskers to the aqueous solution of polyethylene oxide, oxidize The diameter of the aluminum ceramic whiskers is in the order of microns, and the ratio of length to diameter is 20-500:1. Stir for 3-5 hours and stand still for 20-24 hours to make a slurry for use.

[0032] 2. Prepare the mixture

[0033] Add 10 parts by mass of polyvinyl alcohol with a molecular weight of 180,000 to 200,000 to dextrin with a mass ratio of 1:1, 6 parts by mass of water glass, and stir for 3 to 5 hours. During the stirring process, add 20 parts by mass of alumina ceramic particles...

Embodiment 2

[0041] In the embodiment, in step 1 of preparing the slurry, 3 parts by mass of polyethylene oxide was added to 800 parts by mass of normal temperature water, stirred for 3 to 5 hours, and dissolved uniformly to prepare an aqueous solution of polyethylene oxide, and the aluminum oxide ceramic whiskers 50 parts by mass were added to the polyethylene oxide aqueous solution, and the other steps of this step were the same as in Example 1, and prepared into slurry for later use.

[0042] In step 2 of preparing the mixture, add 6 parts by mass of polyvinyl alcohol with a molecular weight of 180,000 to 200,000 to dextrin with a mass ratio of 1:1 and 3 parts by mass of water glass to the prepared slurry, and stir for 3 to After 5 hours, 10 parts by mass of alumina ceramic particles with a particle size of nanometers were added during the stirring process to prepare a mixture.

[0043] In the firing step 5, the blank is sintered at 150° C. for 5 hours in an industrial heat treatment fu...

Embodiment 3

[0046] In the embodiment, in step 1 of preparing the slurry, 10 parts by mass of polyethylene oxide was added to 1300 parts by mass of normal temperature water, stirred for 1 to 3 hours, and dissolved uniformly to prepare an aqueous solution of polyethylene oxide, and the aluminum oxide ceramic whiskers 120 parts by mass were added to the polyethylene oxide aqueous solution, and the other steps of this step were the same as those in Example 1, and prepared into slurry for later use.

[0047]In step 2 of preparing the mixture, add 15 parts by mass of polyvinyl alcohol with a molecular weight of 180,000 to 200,000 to dextrin with a mass ratio of 1:1 to the prepared slurry, and 10 parts by mass of water glass, and stir for 3- After 5 hours, 40 parts by mass of alumina ceramic particles with a particle size of nanometers were added during the stirring process to prepare a mixture.

[0048] In the firing step 5, the blank is sintered at 180° C. for 3 hours in an industrial heat tre...

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Abstract

The invention relates to a preparation method of a ceramic phase multi-component composite preform. The preparation method comprises the steps of preparing slurry, preparing a mixture, dehydrating, preparing a blank and baking. According to the preparation method provided by the invention, in the mixing of raw materials, micron-sized whiskers and nano-sized particles are taken as a reinforcing phase to complete the manufacturing of the composite preform. When the composite preform is applied in the follow-up manufacturing of a composite, the composite perform can be added into a matrix alloy through a reasonable process to improve the structure of the original matrix alloy, thoroughly improve the performances of the original matrix alloy and achieve some special properties of cast iron or steel. The method has the advantages of low cost, high efficiency, simplicity, easiness in operation and the like, and is suitable for industrial large-scale production and manufacturing.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a ceramic phase multi-component composite material prefabricated part. Background technique [0002] In recent years, with the gradual strictness of automobile exhaust emission standards, more and more green and low-carbon new materials have been introduced into industrial production. Among them, metal matrix composites have attracted widespread attention. Micron-scale whiskers and nano-scale particles are effectively added to the matrix alloy as a reinforcing phase to improve the structure of the original matrix alloy, and finally serve industrial production in the form of a new type of material with its unique material properties. For example, ceramic whiskers can effectively improve the strength and toughness of the matrix alloy, and ceramic particles with a diameter of nanometers can improve the dispersion strength in the microstructure of the alloy, thereby en...

Claims

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Application Information

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IPC IPC(8): C04B35/622
Inventor 张强张莉
Owner 张强
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