CN108374134A - A kind of Metal toughened ceramic matric composite and preparation method thereof - Google Patents
A kind of Metal toughened ceramic matric composite and preparation method thereof Download PDFInfo
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- CN108374134A CN108374134A CN201810310361.4A CN201810310361A CN108374134A CN 108374134 A CN108374134 A CN 108374134A CN 201810310361 A CN201810310361 A CN 201810310361A CN 108374134 A CN108374134 A CN 108374134A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/14—Making alloys containing metallic or non-metallic fibres or filaments by powder metallurgy, i.e. by processing mixtures of metal powder and fibres or filaments
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
Abstract
The invention discloses a kind of Metal toughened ceramic matric composite, the composite material includes following components：Al Cu mixed metal powders, TiO2Powder, SiO2Powder, glass fibre, clay, concave convex rod；Its quality proportioning is：The Cu Al mixed metal powders of 10 25wt%, the TiO of 30 45wt%2And SiO2The clay or concave convex rod of powder, the glass fibre of 20 25wt%, 15 20wt%；The present invention is using low-melting point metal alloy powder as toughener, prepare Metal toughened ceramic matric composite, its porosity can be substantially reduced by its liquid phase formed in sintering, the interface cohesion improved between ceramic matrix material and other additive materials acts on, and then obtains required Metal toughened ceramic matric composite.
Description
Technical field
The present invention relates to a kind of Metal toughened ceramic matric composites and preparation method thereof, belong to the preparation skill of inorganic material
Art field.
Background technology
Traditional ceramic material is widely used in each of production and living due to its good power, light, electricity, thermal property
Field also developed various new ceramics, bioceramic etc. at present.These new ceramic materials are electronics, the base of aerospace
Plinth material, it is very active in high-technology field.Wherein, oxide ceramic material is due to special physical and chemical properties
Such as：Such as high rigidity, low heat conductivity, fusing point height, high temperature resistance, corrosion and chemical inertness make it compare and other ceramic materials
There is wider application prospect, however, the brittleness of ceramic material is its commonage deadly defect, also largely for material
On affect its reliability and the popularity of application.Therefore, only also can while keeping oxide ceramic material high intensity
Enough improve its brittleness problems, the service life for further increasing such material is the hot spot that scientific research personnel studies for a long time.Mesh
The preceding research in terms of ceramic toughening mainly has：It is fiber reinforced, the research in terms of particulate reinforcement and Metal toughened.Fiber (or
Whisker) toughening ceramic based composites due to big draw ratio be difficult accomplish to be uniformly distributed so that causing material property
Dispersion, and can just have remarkable result for ceramic toughening enhancing effect to effective control of reinforcement material draw ratio.
Invention content
In order to solve to improve the toughening effect of ceramic material, it is proposed that the present invention.
Therefore, the purpose of the present invention is to solve the deficiencies in the prior art, a kind of Metal toughened ceramic matric composite is provided
And preparation method thereof.
The present invention is using metallic second phase particulate reinforcement method by the way that ductile metal or alloy are added to oxide ceramics
Ceramic-metal composite is formed in collective's phase achievees the purpose that toughening, since the aluminium copper fusing point of addition is relatively low, metal
The addition of grain has the function of that sintering is fluxing to oxide ceramics, can improve the sintering activity of material and improve the sintering of material
Performance.In addition, the metallic particles being gathered at oxide grain boundary effectively inhibits growing up for blapharoplast, material grains is made to refine
And homogenization.
Oxide ceramic powder of the present invention and a certain proportion of metal alloy and the formulation optimization of other auxiliary agents, utilize eutectic
Point alloying component obtains tough to improving effect when sintering process and grain boundary effect between oxide ceramics and other reinforcements
The good ceramic matric composite of property.Preparation process of the present invention is simple, and production cost is low, is highly convenient for industrialized production.
In order to solve the above technical problem, the present invention provides following technical solutions：
A kind of Metal toughened ceramic matric composite, the composite material include following components：Al-Cu mixed metal powders,
TiO2Powder, SiO2Powder, glass fibre, clay, concave convex rod；
Its quality proportioning is：The TiO of 30-45wt%2And SiO2Powder, the glass fibre of 20-25wt%, 15-20wt%
The Cu-Al mixed metal powders of clay or concave convex rod, 10-25wt%；
The composite material is to be equipped with other auxiliary agents using said components as primary raw material and carry out batch mixing ball milling, pass through powder
Form control and uniformly mixing, obtain best ceramic based composite powder, after after 80 DEG C of drying and processings, recycle 15-
Ceramic base composite blank is made in the compression molding of 30MPa, most good through 750-1000 DEG C of sintering process processing acquisition toughness afterwards
Ceramic matric composite.
Further preferably：Al content 94wt%, Cu content 6wt% in the Al-Cu mixed metal powders.
Further preferably：Other described auxiliary agents are selected from alcohol and dispersant.
The invention also discloses a kind of preparation methods of Metal toughened ceramic matric composite, include the following steps：
A kind of preparation method of Metal toughened ceramic matric composite, which is characterized in that include the following steps：
(1) it takes the aluminium copper powder of 10-25wt% to carry out machinery with Al mass percentage contents 94% and Cu contents 6% to mix
It closes, in order to avoid the oxidation of alloyed powder, carries out wet ball grinding batch mixing to obtain the aluminium copper powder of different shape, select zirconium oxide
For ball milling body, ethyl alcohol is that medium carries out mixing and ball milling 3h, and wherein ratio of grinding media to material is 10-100:1.
(2) processing is dried in obtained aluminium copper powder in 80 DEG C of baking oven；
(3) TiO of 30-45% is weighed2And SiO2The clay or concave convex rod of powder, the glass fibre of 20-25%, 15-20%
1-3 hours dry mixings are carried out in batch mixer so that above-mentioned powder is uniformly mixed；
(4) powder prefabricated respectively in step (1)-(3) is recycled to the mode of material by wet type mixing stirring, mechanical agitation 1-2
Hour, then 80 DEG C of drying process of baking oven, are made required mixed powder.
(5) dried mixed powder is put into row compression molding, pressure is set in 15-30MPa, and pressure, which is protected, to be carried 10 seconds.
(6) green body after molding is sintered in vacuum sintering furnace, at certain heating rate (3-5 °/min)
Under, make sintering temperature control at 750-1000 DEG C, soaking time 2h is then air-cooled to room with the cooling rate of 7-10 °/min
Temperature, and then obtain required Metal toughened ceramic matric composite.
The characteristics of the method for the present invention and advantage are as follows：
1. the present invention, as toughener, prepares Metal toughened ceramic matric composite using low-melting point metal alloy powder, lead to
Its porosity can be substantially reduced by crossing its liquid phase for being formed in sintering, improve ceramic matrix material and other additive materials it
Between interface cohesion effect, and then obtain required Metal toughened ceramic matric composite.
2. the present invention is due to that using the ball milling pretreatment for repeatedly carrying out early period to its raw material, can pass through acquisition different shape
Contribute to processing of the later stage in powder material mixing, molding and sintering process with the powder of grain size, it is higher to make ceramics meet
Performance requirement.
Description of the drawings
The aluminium copper powder with (a) sheet and (b) granular form that Fig. 1 is handled through different ratios of grinding media to material.Ratio of grinding media to material is 10:
Flaky aluminum copper alloy powder is obtained in the case of 1, and as the increase alloy powder size of ratio of grinding media to material reduces, form occurs significantly to become
Change, when 100:When 1, aluminium copper powder has been processed into granular form.
The outside drawing of Fig. 2 ceramic matrix composite articles containing Metal toughened (a) and (b) after compression before compression.
Outside drawings of the Fig. 3 without Metal toughened ceramic matrix composite articles (a) and (b) after compression before compression.
By carrying out hardness test to the product containing metal powder and the product without metal powder, as a result, it has been found that, without gold
The product for belonging to powder occurs to be crushed under the pressure effect of about 30N；And the product containing metal powder bear pressure more than the value when,
Still without significant change.
Specific implementation mode
With reference to specific embodiment, the invention will be further described.
Embodiment 1：
The formula components system of ceramic matric composite of the present invention contains Al-Cu mixed metal powder (Al contents
94%, Cu content 6%), TiO2Powder, SiO2Powder, glass fibre, clay, composition proportion include mainly：35% TiO2Powder
End, 10% SiO2Powder, 20% glass fibre, 20% clay, 25% Cu-Al alloy powders (the wherein ratio of copper aluminium
Example is 6%Cu, 94%Al) it is primary raw material, it is equipped with alcohol solvent and carries out batch mixing ball milling, controlled by powder morphology and uniformly mixed
Close, obtain best ceramic based composite powder, after after 80 DEG C of drying and processings, recycle 20MPa compression molding be made pottery
Porcelain base composite blank most obtains the good ceramic matric composite of toughness through 850 DEG C of sintering process processing afterwards.Specific testing program
It is as follows：
(1) it takes out a certain amount of aluminium copper powder and mechanical mix is carried out with Al mass percentage contents 94% and Cu contents 6%
It closes, in order to avoid the oxidation of alloyed powder, carries out wet ball grinding batch mixing to obtain the aluminium copper powder of different shape, select zirconium oxide
For ball milling body, ethyl alcohol is that medium carries out mixing and ball milling 3h, and wherein ratio of grinding media to material is 100:1.
(2) processing is dried in obtained aluminium copper powder in 80 DEG C of baking oven；
(3) 35% TiO is weighed2Powder, 10% SiO2Powder, 20% glass fibre, 20% clay are in batch mixer
The middle dry mixing for carrying out 2 hours so that above-mentioned powder is uniformly mixed.
(4) powder prefabricated respectively in step (1)-(3) is recycled the mode of material by wet type mixing stirring, mechanical agitation 1 small
When, then 80 DEG C of drying process of baking oven, are made required mixed powder.
(5) dried mixed powder is put into row compression molding, pressure is set in 20MPa, and pressure, which is protected, to be carried 10 seconds.
(6) green body after molding is sintered in vacuum sintering furnace, under 4 °/min heating rates, is warming up to
850 DEG C, soaking time 2h, room temperature is then air-cooled to the cooling rate of 8 °/min, and then obtain required Metal toughened
Ceramic matric composite.
Embodiment 2：
The formula components system of ceramic matric composite of the present invention contains Al-Cu mixed metal powder (Al contents
94%, Cu content 6%), TiO2Powder, SiO2Powder, glass fibre, concave convex rod, composition proportion include mainly：
40% TiO2Powder, 5% SiO2Powder, 25% glass fibre, 15% concave convex rod, 20% Cu-Al close
Bronze end (ratio of wherein copper aluminium is 6%Cu, 94%Al) is primary raw material, is equipped with other auxiliary agents and carries out batch mixing ball milling, passes through
Powder morphology control and uniformly mixing, obtain best ceramic based composite powder, after after 80 DEG C of drying and processings, recycle
Ceramic base composite blank is made in the compression molding of 30MPa, most obtains the good ceramics of toughness through 1000 DEG C of sintering process processing afterwards
Based composites.Specific testing program is as follows：
(1) it takes out a certain amount of aluminium copper powder and mechanical mix is carried out with Al mass percentage contents 94% and Cu contents 6%
It closes, in order to avoid the oxidation of alloyed powder, carries out wet ball grinding batch mixing to obtain the aluminium copper powder of different shape, select zirconium oxide
For ball milling body, ethyl alcohol is that medium carries out mixing and ball milling 3h, and wherein ratio of grinding media to material is 10:1.
(2) processing is dried in obtained aluminium copper powder in 80 DEG C of baking oven；
(3) 40% TiO is weighed2Powder, 5% SiO2Powder, 25% glass fibre, 15% concave convex rod are in batch mixing
3 hours dry mixings are carried out in machine so that above-mentioned powder is uniformly mixed.
(4) powder prefabricated respectively in step (1)-(3) is recycled the mode of material by wet type mixing stirring, mechanical agitation 2 small
When, then 80 DEG C of drying process of baking oven, are made required mixed powder.
(5) dried mixed powder is put into row compression molding, pressure is set in 30MPa, and pressure, which is protected, to be carried 10 seconds.
(6) green body after molding is sintered in vacuum sintering furnace, under 5 °/min heating rates, is warming up to
1000 DEG C, soaking time 2h, room temperature is then air-cooled to the cooling rate of 8 °/min, and then obtain required Metal toughened
Ceramic matric composite.
Claims (4)
1. a kind of Metal toughened ceramic matric composite, which is characterized in that the composite material includes following components：Al-Cu is mixed
Close metal powder, TiO2Powder, SiO2Powder, glass fibre, clay, concave convex rod；
Its quality proportioning is：The TiO of 30-45wt%2And SiO2The clay of powder, the glass fibre of 20-25wt%, 15-20wt%
Or the Cu-Al mixed metal powders of concave convex rod, 10-25wt%；
The composite material is to be equipped with other auxiliary agents using said components as primary raw material and carry out batch mixing ball milling, pass through powder morphology
Control and uniformly mixing, obtain best ceramic based composite powder, after after 80 DEG C of drying and processings, recycle 15-30MPa's
Ceramic base composite blank is made in compression molding, and most obtaining the good ceramic base of toughness through 750-1000 DEG C of sintering process processing afterwards answers
Condensation material.
2. composite material according to claim 1, which is characterized in that Al content in the Al-Cu mixed metal powders
94wt%, Cu content 6wt%.
3. composite material according to claim 1, which is characterized in that other described auxiliary agents are selected from alcohol and dispersant.
4. a kind of preparation method of Metal toughened ceramic matric composite, which is characterized in that include the following steps：
(1) the aluminium copper powder of 10-25wt% is taken to carry out mechanical mixture with Al mass percentage contents 94% and Cu contents 6%,
In order to avoid the oxidation of alloyed powder, wet ball grinding batch mixing is carried out to obtain the aluminium copper powder of different shape, selection zirconium oxide is
Ball milling body, ethyl alcohol are that medium carries out mixing and ball milling 3h, and wherein ratio of grinding media to material is 10-100:1.
(2) processing is dried in obtained aluminium copper powder in 80 DEG C of baking oven；
(3) TiO of 30-45% is weighed2And SiO2Powder, the glass fibre of 20-25%, the clay of 15-20% or concave convex rod are mixed
1-3 hours dry mixings are carried out in material machine so that above-mentioned powder is uniformly mixed；
(4) mode for stirring powder recycling material by wet type mixing prefabricated respectively in step (1)-(3), mechanical agitation 1-2 hours,
Then 80 DEG C of drying process of baking oven, are made required mixed powder.
(5) dried mixed powder is put into row compression molding, pressure is set in 15-30MPa, and pressure, which is protected, to be carried 10 seconds.
(6) green body after molding is sintered in vacuum sintering furnace, under certain heating rate (3-5 °/min), is made
Sintering temperature is controlled at 750-1000 DEG C, and soaking time 2h is then air-cooled to room temperature with the cooling rate of 7-10 °/min, into
And obtain required Metal toughened ceramic matric composite.
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| CN201810310361.4A CN108374134B (en) | 2018-04-08 | 2018-04-08 | Metal toughened ceramic matrix composite and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109364701A (en) * | 2018-10-05 | 2019-02-22 | 萍乡市三力科技有限责任公司 | It is a kind of for handling the composite silicon carbide ceramic pipe and preparation method of high-temp waste gas |
| CN115849929A (en) * | 2023-01-09 | 2023-03-28 | 景德镇陶瓷大学 | Metal-zirconia-reinforced ceramic solid waste matrix composite ceramic material and preparation method thereof |
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| CN105523771A (en) * | 2014-10-21 | 2016-04-27 | 兰毅 | Fiber reinforced ceramic composite material |
| CN106542839A (en) * | 2016-10-28 | 2017-03-29 | 宁波鑫汇力精密工具有限公司 | A kind of preparation method of whisker type toughening ceramic |
| CN107586141A (en) * | 2016-07-06 | 2018-01-16 | 南京理工宇龙新材料科技股份有限公司 | A kind of wearability thermal insulation board and preparation method thereof |
| CN107805057A (en) * | 2017-10-12 | 2018-03-16 | 天津大学 | A kind of Metal toughened ceramic base boule composite |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102249682A (en) * | 2011-05-16 | 2011-11-23 | 山东交通学院 | Titanium carbide ceramic composite material reinforced with ferrum and aluminium intermetallic compound and preparation method thereof |
| CN105523771A (en) * | 2014-10-21 | 2016-04-27 | 兰毅 | Fiber reinforced ceramic composite material |
| CN107586141A (en) * | 2016-07-06 | 2018-01-16 | 南京理工宇龙新材料科技股份有限公司 | A kind of wearability thermal insulation board and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109364701A (en) * | 2018-10-05 | 2019-02-22 | 萍乡市三力科技有限责任公司 | It is a kind of for handling the composite silicon carbide ceramic pipe and preparation method of high-temp waste gas |
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