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Method for modification of oxide/oxide composite matrix by in-situ nanowire network

An oxide and nanowire technology, applied in the field of in-situ nanowire network modified oxide/oxide composite matrix, can solve problems such as insufficient strength and toughness, improve mechanical properties, avoid rapid growth, and improve uniformity sexual effect

Pending Publication Date: 2020-02-11
XIAN XINGUI CERAMIC COMPOSITE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of insufficient strength and toughness of oxide / oxide composite materials in the prior art, and to provide a method for modifying the matrix of oxide / oxide composite materials by in-situ nanowire network

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Prepare an acetone solution with a concentration of 5wt.%, mix polysiloxane and ferrocene with a mass ratio of 9:1, then mix the polysiloxane and ferrocene mixture into the acetone solution, and mix it into the process At the same time, magnetic stirring was carried out for 3 hours to obtain a mixed solution with a volume fraction of acetone of 35%;

[0032] 2. Take the nextel 610 alumina fiber and weave it to get the Nextel 610 fiber three-dimensional prefabricated body;

[0033] 3. Immerse the Nextel 610 fiber three-dimensional preform prepared in step 2 in the mixed solution prepared in step 1 for 0.5 hours, and then place it in a vacuum oven at 250°C for 3 hours; then increase the temperature from 300°C at a rate of 5°C / min Raise the temperature to 1000°C, then raise the temperature from 1000°C to 1200°C at a rate of 2°C / min, and keep it warm for 2 hours to prepare the SiOC nanowire network in the Nextel 610 fiber three-dimensional prefabricated body;

[0034] 4...

Embodiment 2

[0039] 1. Prepare an acetone solution with a concentration of 5wt.%, mix polysiloxane and ferrocene with a mass ratio of 15:1, then mix the polysiloxane and ferrocene mixture into the acetone solution, and mix it into the process At the same time, magnetic stirring was carried out for 4 hours to obtain a mixed solution with a volume fraction of acetone of 45%;

[0040] 2. Take the nextel 610 alumina fiber and weave it to get the Nextel 610 fiber three-dimensional prefabricated body;

[0041] 3. Immerse the Nextel 610 fiber three-dimensional preform prepared in step 2 in the mixed solution prepared in step 1 for 0.5 hours, and then place it in a vacuum oven at 250°C for 3 hours; then increase the temperature from 300°C at a rate of 5°C / min Raise the temperature to 1000°C, then raise the temperature from 1000°C to 1200°C at a rate of 2°C / min, and keep it warm for 2 hours to prepare the SiOC nanowire network in the Nextel 610 fiber three-dimensional prefabricated body;

[0042] ...

Embodiment 3

[0048] 1. Prepare an acetone solution with a concentration of 5wt.%, mix polysiloxane and ferrocene with a mass ratio of 19:1, then mix the polysiloxane and ferrocene mixture into the acetone solution, and mix it into the process At the same time, magnetic stirring was carried out for 5 hours to obtain a mixed solution with a volume fraction of acetone of 50%;

[0049] 2. Take the nextel 610 alumina fiber and weave it to get the Nextel 610 fiber three-dimensional prefabricated body;

[0050] 3. Immerse the Nextel 610 fiber three-dimensional preform prepared in step 2 in the mixed solution prepared in step 1 for 0.5 hours, and then place it in a vacuum oven at 250°C for 3 hours; then increase the temperature from 300°C at a rate of 5°C / min Raise the temperature to 1000°C, then raise the temperature from 1000°C to 1200°C at a rate of 2°C / min, and keep it warm for 2 hours to prepare the SiOC nanowire network in the Nextel 610 fiber three-dimensional prefabricated body;

[0051] 4....

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Abstract

The invention relates to a preparation method of a ceramic-based composite material, in particular to a method for modification of an oxide / oxide composite matrix by an in-situ nanowire network to solve the problems of insufficient strength and toughness of an oxide / oxide composite material in the prior art. The technical scheme includes: making a mixed solution of polysiloxane, ferrocene and acetone into a nanowire network in advance in an oxide fiber preform, then performing oxide matrix infiltration, and combining the prefabricated nanowire network with the oxide matrix together, thus finally obtaining the oxide / oxide ceramic-based composite material with effectively improved strength and toughness.

Description

technical field [0001] The invention relates to a preparation method of a ceramic matrix composite material, in particular to a method for modifying an oxide / oxide composite matrix by an in-situ nanowire network. Background technique [0002] Oxide / oxide ceramic matrix composites are oxide ceramic matrix composites toughened by oxide long fibers, referred to as "oxide / oxide composites", in which the matrix materials are alumina-based, mullite-based or oxide-based Aluminum-mullite-based, quartz-based, etc., oxide fibers generally include alumina fibers, mullite fibers, etc., and commercialized oxide fibers include Nextel series fibers (alumina fibers Nextel 610, Nextel 650, mullite fibers, etc. Fiber Nextel 720), Altex series fibers, Almax series fibers, Nitivy ALF series fibers, etc. These fibers are firstly laminated or woven to form a fiber prefabricated body, and then metal oxide slurry, sol (such as alumina sol, mullite sol etc.) Repeated impregnation of fiber preforms ...

Claims

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Application Information

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IPC IPC(8): C04B35/80C04B35/56C04B35/10
CPCC04B35/10C04B35/5603C04B35/80C04B2235/3217C04B2235/3895C04B2235/5224C04B2235/524C04B2235/656C04B2235/6562C04B2235/6567C04B2235/96
Inventor 张海昇李建章王鹏马文科成来飞
Owner XIAN XINGUI CERAMIC COMPOSITE MATERIAL CO LTD
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