CN114262236A - Ceramic composite material - Google Patents

Ceramic composite material Download PDF

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Publication number
CN114262236A
CN114262236A CN202111542197.8A CN202111542197A CN114262236A CN 114262236 A CN114262236 A CN 114262236A CN 202111542197 A CN202111542197 A CN 202111542197A CN 114262236 A CN114262236 A CN 114262236A
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China
Prior art keywords
matrix material
metal phase
ceramic
ceramic matrix
phase composite
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Pending
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CN202111542197.8A
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Chinese (zh)
Inventor
郭振勤
任良元
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JIANGSU LINRY NEW MSTAR TECHNOLOGY Ltd
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JIANGSU LINRY NEW MSTAR TECHNOLOGY Ltd
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Priority to CN202111542197.8A priority Critical patent/CN114262236A/en
Publication of CN114262236A publication Critical patent/CN114262236A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a ceramic composite material, which comprises a ceramic matrix material and metal phase composite particles infiltrated into the interior of the ceramic matrix material; under a certain temperature condition, carbon reacts with carbon dioxide gas in the air to generate gas, and the gas overflows from the ceramic matrix material, so that a large amount of tiny air holes are generated in the ceramic matrix material. At the moment, the high-pressure gas carries the metal phase composite particle material to permeate into the air holes, and the metal phase composite particle material is in a molten state under the action of continuous high temperature, so that the porous ceramic matrix material is filled, and during filling, the metal phase composite particle is connected in the air passage in a spider-web shape to form a fiber shape, so that the toughness of the ceramic composite material is sequentially improved, and the ceramic composite material with high stability is prepared.

Description

Ceramic composite material
Technical Field
The invention particularly relates to a ceramic composite material.
Background
The ceramic composite material has the advantages of both ceramic and metal, is widely applied to military fields such as rockets, supersonic aircrafts and the like, and also widely adopts the ceramic composite material as a base material in the civil field such as the nozzle of a combustor and the inner wall of a high-temperature furnace.
Boron carbide, as a base material of a commonly used ceramic composite material, has the advantages of low cost, easy manufacture and the like compared with diamond or boron nitride, so that the boron carbide is widely used, especially in application of lightweight weapon armor.
However, after the boron carbide ceramic is compounded with the metal, although the structural strength and the high temperature resistance of the boron carbide ceramic are improved, the preparation process and the structural stability after preparation of the boron carbide ceramic still have certain problems, and how to effectively improve the impact resistance and the toughness is still a weak point of the current research.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a ceramic composite material.
A ceramic composite material includes a ceramic matrix material and metal phase composite particles infiltrated inside the ceramic matrix material;
the metal phase composite particles are infiltrated into the ceramic matrix material by adopting the following steps:
s1, preparing silicon powder, boron carbide powder, carbon and absolute ethyl alcohol into slurry through wet grinding;
s2, drying and die pressing the slurry to prepare a layered blank to be sintered;
s3, heating, when the temperature rises to 400-450 ℃, converting the blank to be sintered into a porous ceramic matrix material, and introducing powdery metal phase composite particles and inert gas;
s4, continuously introducing powder, heating and pressurizing until the temperature rises to 800-1000 ℃, and infiltrating the metal phase composite particles into the porous ceramic matrix material;
s5, carrying out multilayer lamination on the porous ceramic matrix material into which the metal phase composite particles are infiltrated according to a lamination mode, and coating an adhesive on the surface during lamination;
s6, carrying out hot pressing on the multi-layer porous ceramic matrix material under the pressure of 10-20MPa, and forming the ceramic composite material with a certain thickness after the hot pressing is finished.
Further, the particle size of the metal phase composite particles is 1-14 μm.
Further, the thickness of the prepared blank to be sintered is 2-6 mm.
Further, the preparation process of the metal phase composite particles comprises the following steps:
s1, weighing certain weight of aluminum oxide powder, potassium metal powder and magnesium metal powder;
s2, grinding and screening to obtain superfine metal powder with the particle size not more than 25 mu m;
s3, drying the superfine metal powder at 75-85 ℃ under the protection of inert atmosphere for more than 2 h;
and S4, after drying, preparing the metal phase composite particles with the particle size of less than 14 mu m by a grinding process under the action of compressed gas.
Further, in the preparation of the slurry, a certain amount of alumina powder is added.
Further, in the preparation of the slurry, the raw materials are mixed, and then the mixed slurry is prepared by adopting an ultrasonic mixing mode.
Has the advantages that:
under a certain temperature condition, carbon reacts with carbon dioxide gas in the air to generate gas, and the gas overflows from the ceramic matrix material, so that a large amount of tiny air holes are generated in the ceramic matrix material.
At the moment, the high-pressure gas carries the metal phase composite particle material to permeate into the air holes, and the metal phase composite particle material is in a molten state under the action of continuous high temperature, so that the porous ceramic matrix material is filled, and during filling, the metal phase composite particle is connected in the air passage in a spider-web shape to form a fiber shape, so that the toughness of the ceramic composite material is sequentially improved, and the ceramic composite material with high stability is prepared.
Detailed Description
For the purpose of enhancing understanding of the present invention, the present invention will be further described in detail with reference to the following examples, which are provided for illustration only and are not to be construed as limiting the scope of the present invention.
A ceramic composite material includes a ceramic matrix material and metal phase composite particles infiltrated inside the ceramic matrix material;
the metal phase composite particles are infiltrated into the ceramic matrix material by adopting the following steps:
s1, preparing slurry from silicon powder, boron carbide powder, alumina powder, carbon and absolute ethyl alcohol through wet grinding, and preparing more uniform slurry through ultrasonic mixing;
s2, drying and die pressing the slurry to prepare a layered blank to be sintered;
s3, heating, when the temperature rises to 400-450 ℃, converting the blank to be sintered into a porous ceramic matrix material, and introducing powdery metal phase composite particles and inert gas;
s4, continuously introducing powder, heating and pressurizing until the temperature rises to 800-1000 ℃, and infiltrating the metal phase composite particles into the porous ceramic matrix material;
s5, carrying out multilayer lamination on the porous ceramic matrix material into which the metal phase composite particles are infiltrated according to a lamination mode, and coating an adhesive on the surface during lamination;
s6, carrying out hot pressing on the multi-layer porous ceramic matrix material under the pressure of 10-20MPa, and forming the ceramic composite material with a certain thickness after the hot pressing is finished.
The preparation process of the metal phase composite particles comprises the following steps:
s1, weighing certain weight of aluminum oxide powder, potassium metal powder and magnesium metal powder;
s2, grinding and screening to obtain superfine metal powder with the particle size not more than 25 mu m;
s3, drying the superfine metal powder at 75-85 ℃ under the protection of inert atmosphere for more than 2 h;
and S4, after drying, preparing the metal phase composite particles with the particle size of less than 14 mu m by a grinding process under the action of compressed gas.
Adopt metal phase composite particle to carry out effectual packing to ceramic matrix material among the ceramic composite to promote ceramic matrix material's toughness, compare with the mode of traditional direct compounding, this kind of novel ceramic composite has adopted two steps preparation technology, with the high-strength of the good utilization ceramic phase and the high toughness of metal phase, thereby prepare out the ceramic composite who has certain structural strength.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (6)

1. A ceramic composite material is characterized by comprising a ceramic matrix material and metal phase composite particles infiltrated into the interior of the ceramic matrix material;
the metal phase composite particles are infiltrated into the ceramic matrix material by adopting the following steps:
s1, preparing silicon powder, boron carbide powder, carbon and absolute ethyl alcohol into slurry through wet grinding;
s2, drying and die pressing the slurry to prepare a layered blank to be sintered;
s3, heating, when the temperature rises to 400-450 ℃, converting the blank to be sintered into a porous ceramic matrix material, and introducing powdery metal phase composite particles and inert gas;
s4, continuously introducing powder, heating and pressurizing until the temperature rises to 800-1000 ℃, and infiltrating the metal phase composite particles into the porous ceramic matrix material;
s5, carrying out multilayer lamination on the porous ceramic matrix material into which the metal phase composite particles are infiltrated according to a lamination mode, and coating an adhesive on the surface during lamination;
s6, carrying out hot pressing on the multi-layer porous ceramic matrix material under the pressure of 10-20MPa, and forming the ceramic composite material with a certain thickness after the hot pressing is finished.
2. The ceramic composite material according to claim 1, wherein the metal phase composite particles have a particle size of 1 to 14 μm.
3. A ceramic composite material according to claim 1, characterized in that the thickness of the finished blank to be sintered is 2-6 mm.
4. The ceramic composite material according to claim 1, wherein the metal phase composite particles are prepared by a process comprising:
s1, weighing certain weight of aluminum oxide powder, potassium metal powder and magnesium metal powder;
s2, grinding and screening to obtain superfine metal powder with the particle size not more than 25 mu m;
s3, drying the superfine metal powder at 75-85 ℃ under the protection of inert atmosphere for more than 2 h;
and S4, after drying, preparing the metal phase composite particles with the particle size of less than 14 mu m by a grinding process under the action of compressed gas.
5. A ceramic composite material according to claim 1, characterized in that in the preparation of the slurry, a certain amount of aluminium oxide powder is added.
6. The ceramic composite material as claimed in claim 1, wherein in the preparation of the slurry, the raw materials are mixed, and then the mixed slurry is prepared by adopting an ultrasonic mixing mode.
CN202111542197.8A 2021-12-16 2021-12-16 Ceramic composite material Pending CN114262236A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111542197.8A CN114262236A (en) 2021-12-16 2021-12-16 Ceramic composite material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111542197.8A CN114262236A (en) 2021-12-16 2021-12-16 Ceramic composite material

Publications (1)

Publication Number Publication Date
CN114262236A true CN114262236A (en) 2022-04-01

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CN (1) CN114262236A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5039633A (en) * 1989-09-14 1991-08-13 The Dow Chemical Company B4C/Al cermets and method for making same
CN103060597A (en) * 2013-01-11 2013-04-24 浙江天乐新材料科技有限公司 Reinforced metal composite material of ceramic skeleton with periodical micro truss structure
CN104058772A (en) * 2014-03-20 2014-09-24 汕头大学 Ceramic composite material substrate and manufacturing technology thereof
CN106699185A (en) * 2016-11-30 2017-05-24 潘云清 Aluminum alloy composite material
CN106830942A (en) * 2017-01-20 2017-06-13 镇江纽科利核能新材料科技有限公司 A kind of porous B4C ceramic skeletons and its freezing molding process
CN107130133A (en) * 2017-05-26 2017-09-05 哈尔滨工业大学 A kind of ceramic/metal composite materials of gradient bicontinuous structure with and its preparation method and application
CN107675058A (en) * 2017-10-12 2018-02-09 哈尔滨工业大学 A kind of expanded letter fraction layered gradient Boral based composites and preparation method thereof
CN109293363A (en) * 2018-10-24 2019-02-01 浙江吉成新材股份有限公司 A kind of preparation method of aluminium boron carbide composite material
CN109320250A (en) * 2018-10-09 2019-02-12 北京镭硼科技有限责任公司 A kind of porous B based on agarose macromolecules gel casting forming4C ceramics preparative body

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5039633A (en) * 1989-09-14 1991-08-13 The Dow Chemical Company B4C/Al cermets and method for making same
CN103060597A (en) * 2013-01-11 2013-04-24 浙江天乐新材料科技有限公司 Reinforced metal composite material of ceramic skeleton with periodical micro truss structure
CN104058772A (en) * 2014-03-20 2014-09-24 汕头大学 Ceramic composite material substrate and manufacturing technology thereof
CN106699185A (en) * 2016-11-30 2017-05-24 潘云清 Aluminum alloy composite material
CN106830942A (en) * 2017-01-20 2017-06-13 镇江纽科利核能新材料科技有限公司 A kind of porous B4C ceramic skeletons and its freezing molding process
CN107130133A (en) * 2017-05-26 2017-09-05 哈尔滨工业大学 A kind of ceramic/metal composite materials of gradient bicontinuous structure with and its preparation method and application
CN107675058A (en) * 2017-10-12 2018-02-09 哈尔滨工业大学 A kind of expanded letter fraction layered gradient Boral based composites and preparation method thereof
CN109320250A (en) * 2018-10-09 2019-02-12 北京镭硼科技有限责任公司 A kind of porous B based on agarose macromolecules gel casting forming4C ceramics preparative body
CN109293363A (en) * 2018-10-24 2019-02-01 浙江吉成新材股份有限公司 A kind of preparation method of aluminium boron carbide composite material

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