CN109987955A - A kind of C effectively improving interfacial combined functionf/ SiC ceramic matrix composite material and preparation method - Google Patents
A kind of C effectively improving interfacial combined functionf/ SiC ceramic matrix composite material and preparation method Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 33
- 239000011153 ceramic matrix composite Substances 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 63
- 239000000919 ceramic Substances 0.000 claims abstract description 17
- 239000011230 binding agent Substances 0.000 claims abstract description 3
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 239000012153 distilled water Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 229910052681 coesite Inorganic materials 0.000 claims description 15
- 229910052906 cristobalite Inorganic materials 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 229910052682 stishovite Inorganic materials 0.000 claims description 15
- 229910052905 tridymite Inorganic materials 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 13
- 239000004115 Sodium Silicate Substances 0.000 claims description 11
- 239000002270 dispersing agent Substances 0.000 claims description 11
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 11
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 11
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 238000000748 compression moulding Methods 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 claims description 6
- 229940048086 sodium pyrophosphate Drugs 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 6
- 235000019818 tetrasodium diphosphate Nutrition 0.000 claims description 6
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 6
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 5
- 235000013339 cereals Nutrition 0.000 claims 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 229910052573 porcelain Inorganic materials 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 abstract description 51
- 229910010271 silicon carbide Inorganic materials 0.000 abstract description 51
- 229920000049 Carbon (fiber) Polymers 0.000 abstract description 17
- 239000004917 carbon fiber Substances 0.000 abstract description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 14
- 239000000758 substrate Substances 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000002023 wood Substances 0.000 description 5
- 238000000137 annealing Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 238000001291 vacuum drying Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 101710198474 Spike protein Proteins 0.000 description 1
- 230000003026 anti-oxygenic effect Effects 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000011204 carbon fibre-reinforced silicon carbide Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5216—Inorganic
- C04B2235/524—Non-oxidic, e.g. borides, carbides, silicides or nitrides
- C04B2235/5248—Carbon, e.g. graphite
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
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Abstract
The present invention relates to Ceramic Matrix Composites Reinforced by Carbon Fibers technical fields, and disclose a kind of C for effectively improving interfacial combined functionf/ SiC ceramic matrix composite material, the raw material including following parts by weight proportion: 50~70 parts of micron SiC ceramic powders, 10~20 parts of micron CfPowder, 5~10 parts of Nano-meter SiO_2s2Powder, 8~15 powder micrometer ceramics binders.The invention also discloses a kind of C for effectively improving interfacial combined functionfThe preparation method of/SiC ceramic matrix composite material.The present invention solves Cf/ SiC ceramic matrix composite material, during the preparation process, since carbon fiber surface shows lyophobicity, the technical problem of boundary moisture performance difference between caused carbon fiber and silicon carbide substrate.
Description
Technical field
The present invention relates to Ceramic Matrix Composites Reinforced by Carbon Fibers technical field, specially one kind effectively improves boundary
The C of face binding performancef/ SiC ceramic matrix composite material and preparation method.
Background technique
Silicon carbide ceramics because have high intensity, high rigidity, anticorrosive, high temperature resistant and low-density due to be widely used in high temperature and
In certain harsh environments, especially there is very big dive in the privileged sites that aerospace flight vehicle needs to bear excessive temperature
Power.But ceramics do not have the plastic deformation ability as metal, inhale in fracture process in addition to generating new break surface
It receives other than the energy of surface, almost without other mechanism for absorbing energy, this just seriously limits its application as structural material.
Carbon fiber has many advantages, such as that specific strength is high, specific modulus is big, mechanical behavior under high temperature and hot property are good, in inert atmosphere
In 2000 DEG C when be still able to maintain rheobase and originally do not decline.With carbon fibre reinforced silicon carbide composite material, process of the material in fracture
In by toughening mechanisms such as spike protein gene, fiber-bridged, crack deflections consume energy, so that material is shown as non-brittle fracture.
Cf/ SiC ceramic matrix composite material combines the excellent high-temperature behavior of carbon fiber and silicon carbide substrate high antioxygenic property, receives height and closes
Note, and it is widely used in aerospace field.
But in preparation CfDuring/SiC ceramic matrix composite material, since the specific surface area active of carbon fiber is small (generally less than
1m2/ g), surface can be low, and surface shows lyophobicity, so that there is interfacial wettabilities between carbon fiber and silicon carbide substrate is poor
The problem of.
In order to improve the chemical mobility of the surface of carbon fiber, enhance the binding ability of carbon fiber surface and silicon carbide substrate, into
And the performance of composite material is improved, it is necessary for carrying out surface treatment to carbon fiber.Currently, carbon fiber surface modification is handled
Mainly there are the methods of surface oxidation treatment, surface coated treatment, surface growth whisker.But single surface treatment is usually mentioning
While certain high aspect performance, the performance of another aspect is sacrificed, and compound base amount method rule can be used by just compromise
The advantages of several surface treatment methods, will become the main direction of studying of surface treatment of carbon fibers from now on.
The present invention provides a kind of C for effectively improving interfacial combined functionf/ SiC ceramic matrix composite material and preparation method, it is intended to solve
Cf/ SiC ceramic matrix composite material, during the preparation process, since carbon fiber surface shows lyophobicity, caused carbon fiber and silicon carbide
The technical problem of boundary moisture performance difference between matrix.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of C for effectively improving interfacial combined functionf/ SiC composite wood
Material and preparation method, solve Cf/ SiC ceramic matrix composite material, during the preparation process, since carbon fiber surface shows lyophobicity, institute
The technical problem of boundary moisture performance difference between caused carbon fiber and silicon carbide substrate.
(2) technical solution
To achieve the above object, the invention provides the following technical scheme:
A kind of C effectively improving interfacial combined functionf/ SiC ceramic matrix composite material, the raw material including following parts by weight proportion:
50~70 parts of micron SiC ceramic powders, 10~20 parts of micron CfPowder, 5~10 parts of Nano-meter SiO_2s2Powder, 8~15 powder micrometer ceramics bonding
Agent.
Preferably, the Nano-meter SiO_22Average grain diameter≤100nm of powder.
Preferably, the vitrified bonding is by average grain diameter≤2.6um 30%wtSiO2, 30%wt Al2O3, 25%wt
ZrO2And 15%wtTiO2Composition.
A kind of C effectively improving interfacial combined functionfThe preparation method of/SiC ceramic matrix composite material, comprising the following steps:
S101. 50~70 parts of micron SiC ceramic powders, 10~20 parts of micron C are takenfPowder, 5~10 parts of Nano-meter SiO_2s2Powder, 8~15
Powder micrometer ceramics binder, it is spare；
S102. the SiC powder in step S101 is placed in distilled water together with sodium metasilicate, ultrasonic disperse is uniform；
S103. by the C in step S101fPowder particles are placed in distilled water together with sodium pyrophosphate, and ultrasonic disperse is uniform；
S104. by the SiO in step S1012Powder is placed in distilled water together with sodium metasilicate, and ultrasonic disperse is uniform；
S105. the SiC dispersion liquid in step S102 is added in the reactor equipped with agitating device and heating device,
Under the stirring rate of 600r/min, slowly by the C in step S103fDispersant liquid drop is added in reactor, after being added dropwise, slowly
By the SiO in step S1042Dispersant liquid drop is added in reactor, and after being added dropwise, 2h is stirred under 800r/min, later,
Under 120 DEG C of temperature, stirring rate 300r/min, solvent is evaporated and is removed；
S106. the vitrified bonding in step S101 is added to reacting equipped with blender with the powder in step S105
In device, at 800r/min, 2h is stirred；
S107. the powder in step S106 is fitted into etc. in static pressure rubber mold, the compression moulding under 600MPa pressure, is risen
Temperature keeps the temperature 3h to 2800 DEG C, and under 2800 DEG C, 15MPa, and C is preparedf/ SiC ceramic matrix composite material.
(3) beneficial technical effect
Compared with prior art, the present invention has following beneficial technical effect:
The present invention is in matrix SiC ceramic phase and reinforced phase CfIncrease vitrified bonding and adhesive aid Nano-meter SiO_2 between powder2
Powder, vitrified bonding and adhesive aid Nano-meter SiO_22Powder can effectively improve matrix SiC ceramic phase and reinforced phase CfBetween powder
Wettability, to improve matrix SiC ceramic phase and reinforced phase CfAdhesive property between powder；
C prepared by the present inventionf/ SiC ceramic matrix composite material, tensile strength is 167~180MPa, stretch modulus be 79~
83GPa, bending strength are 294~316MPa, bending modulus is 78~89GPa；
With the C in comparative examplefTensile strength 160MPa, the stretch modulus 65GPa, bending strength of/SiC ceramic matrix composite material
288MPa, bending modulus 68GPa are compared, and are achieved and are significantly improved CfThe technical effect of the mechanical property of/SiC ceramic matrix composite material.
Specific embodiment
Embodiment one:
Above-mentioned CfThe preparation method of/SiC ceramic matrix composite material the following steps are included:
S101. 50g average particle size≤25um SiC ceramic powder, 20g average grain diameter≤10um C are takenfPowder, 5g are averaged grain
Diameter≤100nm SiO2Powder, 15g average grain diameter≤2.6um vitrified bonding, it is spare；Wherein, vitrified bonding is by 30%
wtSiO2, 30%wt Al2O3, 25%wt ZrO2And 15%wtTiO2Composition；
S102. the SiC powder in step S101 is placed in 100mL distilled water together with 5g sodium metasilicate, ultrasonic disperse is uniform；
S103. by the C in step S101fPowder particles are placed in 30mL distilled water together with 2g sodium pyrophosphate, ultrasonic disperse
Uniformly；
S104. by the SiO in step S1012Powder is placed in 20mL distilled water together with 1g sodium metasilicate, and ultrasonic disperse is uniform；
S105. the SiC dispersion liquid in step S102 is added in the reactor equipped with agitating device and heating device,
Under the stirring rate of 600r/min, slowly by the C in step S103fDispersant liquid drop is added in reactor, after being added dropwise, slowly
By the SiO in step S1042Dispersant liquid drop is added in reactor, and after being added dropwise, 2h is stirred under 800r/min, later,
Under 120 DEG C of temperature, stirring rate 300r/min, solvent is evaporated and is removed；
S106. the vitrified bonding in step S101 is added to reacting equipped with blender with the powder in step S105
In device, at 800r/min, 2h is stirred；
S107. the powder in step S106 is fitted into etc. in static pressure rubber mold, the compression moulding under 600MPa pressure, then
Being placed in preheating temperature is in 1250 DEG C of vacuum drying oven, with the heating rate of 10 DEG C/min, is warming up to 2800 DEG C, and in 2800 DEG C,
3h is kept the temperature under 15MPa, later with the annealing rate of 10 DEG C/min, C is prepared in taking-up when being cooled to room temperaturef/ SiC composite wood
Material.
Embodiment two:
S101. 70g average particle size≤25um SiC ceramic powder, 10g average grain diameter≤10um C are takenfPowder, 10g are averaged grain
Diameter≤100nm SiO2Powder, 8g average grain diameter≤2.6um vitrified bonding, it is spare；Wherein, vitrified bonding is by 30%
wtSiO2, 30%wt Al2O3, 25%wt ZrO2And 15%wtTiO2Composition；
S102. the SiC powder in step S101 is placed in 100mL distilled water together with 5g sodium metasilicate, ultrasonic disperse is uniform；
S103. by the C in step S101fPowder particles are placed in 30mL distilled water together with 2g sodium pyrophosphate, ultrasonic disperse
Uniformly；
S104. by the SiO in step S1012Powder is placed in 20mL distilled water together with 1g sodium metasilicate, and ultrasonic disperse is uniform；
S105. the SiC dispersion liquid in step S102 is added in the reactor equipped with agitating device and heating device,
Under the stirring rate of 600r/min, slowly by the C in step S103fDispersant liquid drop is added in reactor, after being added dropwise, slowly
By the SiO in step S1042Dispersant liquid drop is added in reactor, and after being added dropwise, 2h is stirred under 800r/min, later,
Under 120 DEG C of temperature, stirring rate 300r/min, solvent is evaporated and is removed；
S106. the vitrified bonding in step S101 is added to reacting equipped with blender with the powder in step S105
In device, at 800r/min, 2h is stirred；
S107. the powder in step S106 is fitted into etc. in static pressure rubber mold, the compression moulding under 600MPa pressure, then
Being placed in preheating temperature is in 1250 DEG C of vacuum drying oven, with the heating rate of 10 DEG C/min, is warming up to 2800 DEG C, and in 2800 DEG C,
3h is kept the temperature under 15MPa, later with the annealing rate of 10 DEG C/min, C is prepared in taking-up when being cooled to room temperaturef/ SiC composite wood
Material.
Embodiment three:
S101. 60g average particle size≤25um SiC ceramic powder, 15g average grain diameter≤10um C are takenfPowder, 8g are averaged grain
Diameter≤100nm SiO2Powder, 12g average grain diameter≤2.6um vitrified bonding, it is spare；Wherein, vitrified bonding is by 30%
wtSiO2, 30%wt Al2O3, 25%wt ZrO2And 15%wtTiO2Composition；
S102. the SiC powder in step S101 is placed in 100mL distilled water together with 5g sodium metasilicate, ultrasonic disperse is uniform；
S103. by the C in step S101fPowder particles are placed in 30mL distilled water together with 2g sodium pyrophosphate, ultrasonic disperse
Uniformly；
S104. by the SiO in step S1012Powder is placed in 20mL distilled water together with 1g sodium metasilicate, and ultrasonic disperse is uniform；
S105. the SiC dispersion liquid in step S102 is added in the reactor equipped with agitating device and heating device,
Under the stirring rate of 600r/min, slowly by the C in step S103fDispersant liquid drop is added in reactor, after being added dropwise, slowly
By the SiO in step S1042Dispersant liquid drop is added in reactor, and after being added dropwise, 2h is stirred under 800r/min, later,
Under 120 DEG C of temperature, stirring rate 300r/min, solvent is evaporated and is removed；
S106. the vitrified bonding in step S101 is added to reacting equipped with blender with the powder in step S105
In device, at 800r/min, 2h is stirred；
S107. the powder in step S106 is fitted into etc. in static pressure rubber mold, the compression moulding under 600MPa pressure, then
Being placed in preheating temperature is in 1250 DEG C of vacuum drying oven, with the heating rate of 10 DEG C/min, is warming up to 2800 DEG C, and in 2800 DEG C,
3h is kept the temperature under 15MPa, later with the annealing rate of 10 DEG C/min, C is prepared in taking-up when being cooled to room temperaturef/ SiC composite wood
Material.
Comparative example:
CfThe preparation method of/SiC ceramic matrix composite material the following steps are included:
S101. 50g average particle size≤25um SiC ceramic powder, 20g average grain diameter≤10um C are takenfIt is powder, spare；Its
In, vitrified bonding is by 30%wtSiO2, 30%wt Al2O3, 25%wt ZrO2And 15%wtTiO2Composition；
S102. the SiC powder in step S101 is placed in 100mL distilled water together with 5g sodium metasilicate, ultrasonic disperse is uniform；
S103. by the C in step S101fPowder particles are placed in 30mL distilled water together with 2g sodium pyrophosphate, ultrasonic disperse
Uniformly；
S104. the SiC dispersion liquid in step S102 is added in the reactor equipped with agitating device and heating device,
Under the stirring rate of 600r/min, slowly by the C in step S103fDispersant liquid drop is added in reactor, after being added dropwise, in
2h is stirred under 800r/min, later, at 120 DEG C of temperature, stirring rate 300r/min, solvent is evaporated and is removed；
S105. the powder in step S104 is fitted into etc. in static pressure rubber mold, the compression moulding under 600MPa pressure, then
Being placed in preheating temperature is in 1250 DEG C of vacuum drying oven, with the heating rate of 10 DEG C/min, is warming up to 2800 DEG C, and in 2800 DEG C,
3h is kept the temperature under 15MPa, later with the annealing rate of 10 DEG C/min, C is prepared in taking-up when being cooled to room temperaturef/ SiC composite wood
Material.
Performance test:
To the C prepared in above-described embodiment and comparative examplef/ SiC ceramic matrix composite material is tested for the property, and performance data is as follows
Shown in table 1.
Table 1
Claims (4)
1. a kind of C for effectively improving interfacial combined functionf/ SiC ceramic matrix composite material, which is characterized in that matched including following parts by weight
Raw material: 50~70 parts of micron SiC ceramic powders, 10~20 parts of micron CfPowder, 5~10 parts of Nano-meter SiO_2s2Powder, 8~15 powder microns pottery
Porcelain binder.
2. C according to claim 1f/ SiC ceramic matrix composite material, which is characterized in that the Nano-meter SiO_22The average grain diameter of powder≤
100nm。
3. C according to claim 1f/ SiC ceramic matrix composite material, which is characterized in that the vitrified bonding by average grain diameter≤
The 30%wtSiO of 2.6um2, 30%wt Al2O3, 25%wt ZrO2And 15%wtTiO2Composition.
4. a kind of C for effectively improving interfacial combined functionfThe preparation method of/SiC ceramic matrix composite material, which is characterized in that including following step
It is rapid:
S101. 50~70 parts of micron SiC ceramic powders, 10~20 parts of micron C are takenfPowder, 5~10 parts of Nano-meter SiO_2s2Powder, 8~15 powder are micro-
Rice vitrified bonding, it is spare；
S102. the SiC powder in step S101 is placed in distilled water together with sodium metasilicate, ultrasonic disperse is uniform；
S103. by the C in step S101fPowder particles are placed in distilled water together with sodium pyrophosphate, and ultrasonic disperse is uniform；
S104. by the SiO in step S1012Powder is placed in distilled water together with sodium metasilicate, and ultrasonic disperse is uniform；
S105. the SiC dispersion liquid in step S102 is added in the reactor equipped with agitating device and heating device, in 600r/
Under the stirring rate of min, slowly by the C in step S103fDispersant liquid drop is added in reactor, slowly will step after being added dropwise
SiO in rapid S1042Dispersant liquid drop is added in reactor, after being added dropwise, 2h is stirred under 800r/min, later, in temperature
120 DEG C, under stirring rate 300r/min, solvent is evaporated and is removed；
S106. the powder in the vitrified bonding and step S105 in step S101 is added to the reactor equipped with blender
In, at 800r/min, stir 2h；
S107. the powder in step S106 is fitted into etc. in static pressure rubber mold, the compression moulding under 600MPa pressure is warming up to
2800 DEG C, and 3h is kept the temperature under 2800 DEG C, 15MPa, C is preparedf/ SiC ceramic matrix composite material.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114455968A (en) * | 2022-02-10 | 2022-05-10 | 航天材料及工艺研究所 | A kind of C/SiC-SiO2 composite material and preparation method thereof |
| CN114455968B (en) * | 2022-02-10 | 2023-08-29 | 航天材料及工艺研究所 | A kind of C/SiC-SiO2 composite material and preparation method thereof |
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