CN109868429A - One kind effectively reducing Al4C3Low-density graphite fibre-aluminum matrix composite of phase - Google Patents
One kind effectively reducing Al4C3Low-density graphite fibre-aluminum matrix composite of phase Download PDFInfo
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- CN109868429A CN109868429A CN201910170725.8A CN201910170725A CN109868429A CN 109868429 A CN109868429 A CN 109868429A CN 201910170725 A CN201910170725 A CN 201910170725A CN 109868429 A CN109868429 A CN 109868429A
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Abstract
The present invention relates to metal aluminum matrix composite technical fields, and disclose one kind and effectively reduce Al4C3Low-density graphite fibre-aluminum matrix composite of phase, raw material including following parts by weight proportion: 50-80 parts of nanometer aluminium powders, 4-8 parts of copper nanoparticles, 8-10 parts of micron graphite fiber powder, 17.8-20.4 parts of glass powders, 7.88 parts of dioctyl phthalates, 3.76 parts of allyl methacrylates, 2.84 parts of n,N-Dimethylformamide.The present invention solves graphite fibre-aluminum matrix composite, effectively reduces Al in realization4C3While the product of interface, the technical issues of its own density is effectively reduced cannot achieve.
Description
Technical field
The present invention relates to metal aluminum matrix composite technical field, specially one kind effectively reduces Al4C3The low-density stone of phase
Black fiber-aluminum matrix composite.
Background technique
Matrix currently used for metal-base composites mainly has aluminium, copper, titanium, nickel etc., since aluminium has fracture toughness high
Etc. good comprehensive performance, the creep forming ability combined to fiber filling is strong, intensity is high and corrosion resistance is good, especially
Its low-density, will make material have high specific strength, these advantages make aluminium in developing composite material by favor.
Graphite fibre reinforced aluminum matrix composites are due to, specific strength small with density and specific stiffness height, conductive and thermal conductivity
Under good, elevated temperature strength and high temperature the features such as good stability of the dimension, the very big concern by aerospace field.
Manufacture graphite fibre reinforced aluminum matrix composites sixty-four dollar question is, when penetrating into technique with liquid, only to exist
When more than 1000 DEG C or more, aluminum substrate can soak graphite fibre, but more than 1000 DEG C at a temperature of, due to graphite fibre
Dimension can generate excessive Al with aluminium base precursor reactant4C3Interface product, excessive brittlement phase Al4C3Product can destroy graphite fibre
The performance of dimension, so as to cause the decline of Graphite Reinforced Aluminum based composites performance.
The method to solve the above problems most typically is with coating and gas phase deposition technology in graphite fibre surface covering, coating
Main purpose be to prevent reacting between graphite fibre and base aluminum, while improving wetability, wanted a large number of studies show that meeting
There are two main classes for the coating asked: metal coating based on nickel, copper and titanium and with pyrolytic carbon, TiN, BN, SiO2And Al2O3Etc. for
Main nonmetallic coating.Wherein, nickel coating can prevent reacting for graphite fibre and aluminum substrate, but nickel is into graphite fibre
Diffusion will lead to the graphitization of fiber, compromises the internal structure of graphite fibre, is not appropriate for doing single coating；Add in nickel
Enter alloying element titanium, can effectively slow down the diffusion of nickel, improve the interface bond strength of composite material；TiB ceramic particle is often made
For the nonmetallic coating of graphite fibre, it has good wetting effect to liquid aluminium, at 900 DEG C and 2 × 10-7The vacuum item of Torr
Under part, angle of wetting is 37 °, but it not can effectively stop the chemical reaction between graphite fibre and aluminium, and whole process must
It must carry out in an inert atmosphere；Copper is used for graphite fibre due to the special performance such as its chemical property is stable, ductility is good
Coating, copper-plated graphite fiber have good strength retention at high temperature, and the interface C/Cu is also anti-without diffusion both without chemical reaction
It answers, is a kind of physical bond based on mechanical bond, the bending strength of the composite material obtained with copper electroplating method nearly reaches
Twice of nickel plating, still, the solid state density of fine copper is up to 8.96g/cm3, fused solution density be up to 8.92g/cm3, it is pure
Aluminum density 2.7g/cm3Three times it is more, therefore, using the method for graphite fibre copper coating, improving graphite fibre and aluminum substrate
Interface problem while, also result in graphite fibre reinforced aluminum matrix composites density increase the problem of.
The present invention provides one kind and effectively reduces Al4C3Low-density graphite fibre-aluminum matrix composite of phase, it is intended to solve stone
Black fiber-aluminum matrix composite effectively reduces Al in realization4C3While the product of interface, it cannot achieve and its own is effectively reduced
The technical issues of density.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides one kind to effectively reduce Al4C3Low-density graphite fibre-aluminium of phase
Based composites solve graphite fibre-aluminum matrix composite, effectively reduce Al in realization4C3While the product of interface, nothing
The technical issues of its own density is effectively reduced in method realization.
(2) technical solution
To achieve the above object, the invention provides the following technical scheme:
One kind effectively reducing Al4C3Low-density graphite fibre-aluminum matrix composite of phase, including following parts by weight proportion
Raw material: 50-80 parts of nanometer aluminium powders, 4-8 parts of copper nanoparticles, 8-10 parts of micron graphite fiber powder, 17.8-20.4 parts of glass powders,
7.88 parts of dioctyl phthalates, 3.76 parts of allyl methacrylates, 2.84 parts of N,N-dimethylformamides.
Preferably, average particle size≤100nm of the aluminium powder, average particle size≤100nm of copper powder, graphite fibre powder it is flat
Equal granularity≤50um.
Preferably, the glass powder includes the B of 6g average grain diameter≤2.5um PbO, 3g average grain diameter≤50nm2O3、2g
Average grain diameter≤50nm SiO2, 6g average grain diameter≤50nm Bi2O3。
Preferably, the graphite fibre-aluminum matrix composite includes the raw material of following parts by weight proportion, and: 50g is averaged grain
Degree≤100nm aluminium powder, 5g average grain diameter≤100nm copper powder, 10g average grain diameter≤50um graphite fibre powder, 20.4g glass
Glass powder, 8mL dioctyl phthalate, 4mL allyl methacrylate, 3mLN, dinethylformamide.
Preferably, the graphite fibre-aluminum matrix composite preparation method the following steps are included:
S1. 50-80 parts of nanometer aluminium powders, 4-8 parts of copper nanoparticles, 8-10 parts of micron graphite fiber powder are weighed, it is spare；
S2. with PbO, B2O3、SiO2、Bi2O3For raw material, it is configured to glass powder；
S3. 7.88 parts of dioctyl phthalates, 3.76 parts of allyl methacrylates, 2.84 parts of N are successively measured respectively,
Dinethylformamide, it is spare；
S4. after the standby raw material in step S1, the glass powder in step S2, the standby raw material in step S3 being mixed,
Compression moulding under pressure, then be placed in vacuum drying oven, 2h is kept the temperature at 1100-1300 DEG C, is cooled down later, and graphite is prepared
Fiber-aluminum matrix composite.
Preferably, in the step S4, mixed raw material compression moulding under the pressure of 650-800MPa.
Preferably, in the step S4, mixed raw material is under the pressure of 650-800MPa after compression moulding, in 1100-
1300 DEG C, keep the temperature 2h under 3-5MPa.
(3) beneficial technical effect
Compared with prior art, the present invention has following beneficial technical effect:
Graphite fibre-aluminum matrix composite density that the present invention prepares is 1.01-1.15g/cm3, tensile strength be
276-282MPa, yield strength 177-187MPa, elasticity modulus 93GPa, and the fibre in graphite fibre-aluminum matrix composite
Dimension is evenly distributed, no Al4C3Interface product；
With the graphite fibre-aluminum matrix composite density 2.89g/cm prepared in comparative example3, tensile strength 212MPa,
Yield strength is 92MPa, elasticity modulus 61GPa, and a small amount of Al is contained in structure4C3Interface product is compared, and the present invention is not only shown
Work alleviates graphite fibre-aluminum matrix composite autologous density and significantly improves graphite fibre-aluminum matrix composite
Mechanical performance, to effectively reduce Al in realization4C3While the product of interface, the skill that its own density is effectively reduced is achieved
Art effect.
Specific embodiment
Embodiment one:
Graphite fibre-aluminum matrix composite includes following raw material: 50g average particle size≤100nm aluminium powder, 5g average grain diameter
Copper powder, 10g average grain diameter≤50um graphite fibre powder, the 20.4g glass powder, 8mL dioctyl phthalate (ρ of≤100nm
For 0.985g/mL), 4mL allyl methacrylate (ρ 0.94g/mL), 3mLN, dinethylformamide (ρ 0.945g/
cm3)；
Wherein, glass powder by 6g average grain diameter≤2.5um PbO, 3g average grain diameter≤50nm B2O3, 2g average grain diameter
The SiO of≤50nm2, 6g average grain diameter≤50nm Bi2O3, 0.8g average grain diameter≤50nm Li2O, 0.8g average grain diameter≤
The TiO of ZnO, 1g average grain diameter≤50nm of MgO, 0.8g average grain diameter≤50nm of 100nm2Composition；
The preparation method of above-mentioned graphite fibre-aluminum matrix composite the following steps are included:
S1. it is flat that 50g average particle size≤100nm aluminium powder, 5g average grain diameter≤100nm copper powder, 10g are successively weighed respectively
The graphite fibre powder of equal partial size≤50um, it is spare；
S2. the B of 6g average grain diameter≤2.5um PbO, 3g average grain diameter≤50nm are successively weighed respectively2O3, 2g is averaged grain
Diameter≤50nm SiO2, 6g average grain diameter≤50nm Bi2O3, 0.8g average grain diameter≤50nm Li2O, 0.8g average grain diameter≤
The TiO of ZnO, 1g average grain diameter≤50nm of MgO, 0.8g average grain diameter≤50nm of 100nm2, it is configured to glass powder；
S3. 8mL dioctyl phthalate, 4mL allyl methacrylate, 3mLN, N- dimethyl are successively measured respectively
Formamide, it is spare；
S4. the standby raw material in step S1, the glass powder in step S2, the standby raw material in step S3 are placed in height together
In fast mixer, after mixing 2h under 600r/min, the compression moulding under the pressure of 800MPa, then being placed in preheating temperature is 600
DEG C vacuum drying oven in, be warming up to 1100 DEG C with the heating rate of 10 DEG C/min, and keep the temperature 2h under 1100 DEG C, 3MPa, it is laggard
Row cooling, keeps the temperature 1h when being cooled to 800 DEG C with the annealing rate of 5 DEG C/min, taking-up when being cooled to 50 DEG C, and graphite fibre is prepared
Dimension-aluminum matrix composite；
S5. graphite fibre-aluminum matrix composite in step S4 is tested, the graphite fibre-aluminum matrix composite
Density be 1.15g/cm3, tensile strength 282MPa, yield strength 187MPa, elasticity modulus 93GPa, and graphite is fine
Fiber in dimension-aluminum matrix composite is evenly distributed, no Al4C3Interface product.
Embodiment two:
Graphite fibre-aluminum matrix composite includes following raw material: 65g average particle size≤100nm aluminium powder, 4g average grain diameter
The copper powder of≤100nm, 8g average grain diameter≤50um graphite fibre powder, 17.8g glass powder, 8mL dioctyl phthalate,
4mL allyl methacrylate, 3mLN, dinethylformamide；
Wherein, glass powder by 6g average grain diameter≤2.5um PbO, 3g average grain diameter≤50nm B2O3, 2g average grain diameter
The SiO of≤50nm2, 6g average grain diameter≤50nm Bi2O3, 0.8g average grain diameter≤50nm Li2O composition；
The preparation method of above-mentioned graphite fibre-aluminum matrix composite the following steps are included:
S1. it is flat that 65g average particle size≤100nm aluminium powder, 4g average grain diameter≤100nm copper powder, 8g are successively weighed respectively
The graphite fibre powder of equal partial size≤50um, it is spare；
S2. the B of 6g average grain diameter≤2.5um PbO, 3g average grain diameter≤50nm are successively weighed respectively2O3, 2g is averaged grain
Diameter≤50nm SiO2, 6g average grain diameter≤50nm Bi2O3, 0.8g average grain diameter≤50nm Li2O, 0.8g average grain diameter≤
The TiO of ZnO, 1g average grain diameter≤50nm of MgO, 0.8g average grain diameter≤50nm of 100nm2, it is configured to glass powder；
S3. 8mL dioctyl phthalate, 4mL allyl methacrylate, 3mLN, N- dimethyl are successively measured respectively
Formamide, it is spare；
S4. the standby raw material in step S1, the glass powder in step S2, the standby raw material in step S3 are placed in height together
In fast mixer, after mixing 2h under 800r/min, the compression moulding under the pressure of 650MPa, then being placed in preheating temperature is 600
DEG C vacuum drying oven in, be warming up to 1300 DEG C with the heating rate of 10 DEG C/min, and keep the temperature 2h under 1300 DEG C, 4MPa, it is laggard
Row cooling, keeps the temperature 1h when being cooled to 800 DEG C with the annealing rate of 5 DEG C/min, taking-up when being cooled to 50 DEG C, and graphite fibre is prepared
Dimension-aluminum matrix composite；
S5. graphite fibre-aluminum matrix composite in step S4 is tested, the graphite fibre-aluminum matrix composite
Density be 1.07g/cm3, tensile strength 276MPa, yield strength 183MPa, elasticity modulus 93GPa, and graphite is fine
Fiber in dimension-aluminum matrix composite is evenly distributed, no Al4C3Interface product.
Embodiment three:
Graphite fibre-aluminum matrix composite includes following raw material: 80g average particle size≤100nm aluminium powder, 8g average grain diameter
Copper powder, the 10g average grain diameter≤50um graphite fibre powder, 18g glass powder, 8mL dioctyl phthalate, 4mL of≤100nm
Allyl methacrylate, 3mLN, dinethylformamide；
Wherein, glass powder by 6g average grain diameter≤2.5um PbO, 3g average grain diameter≤50nm B2O3, 2g average grain diameter
The SiO of≤50nm2, 6g average grain diameter≤50nm Bi2O3, 1g average grain diameter≤50nm TiO2Composition；
The preparation method of above-mentioned graphite fibre-aluminum matrix composite the following steps are included:
S1. it is flat that 80g average particle size≤100nm aluminium powder, 8g average grain diameter≤100nm copper powder, 10g are successively weighed respectively
The graphite fibre powder of equal partial size≤50um, it is spare；
S2. the B of 6g average grain diameter≤2.5um PbO, 3g average grain diameter≤50nm are successively weighed respectively2O3, 2g is averaged grain
Diameter≤50nm SiO2, 6g average grain diameter≤50nm Bi2O3, 1g average grain diameter≤50nm TiO2, it is configured to glass powder；
S3. 8mL dioctyl phthalate, 4mL allyl methacrylate, 3mLN, N- dimethyl are successively measured respectively
Formamide, it is spare；
S4. the standby raw material in step S1, the glass powder in step S2, the standby raw material in step S3 are placed in height together
In fast mixer, after mixing 2h under 650r/min, the compression moulding under the pressure of 700MPa, then being placed in preheating temperature is 800
DEG C vacuum drying oven in, be warming up to 1250 DEG C with the heating rate of 10 DEG C/min, and keep the temperature 2h under 1250 DEG C, 5MPa, it is laggard
Row cooling, keeps the temperature 1h when being cooled to 600 DEG C with the annealing rate of 5 DEG C/min, taking-up when being cooled to 50 DEG C, and graphite fibre is prepared
Dimension-aluminum matrix composite；
S5. graphite fibre-aluminum matrix composite in step S4 is tested, the graphite fibre-aluminum matrix composite
Density be 1.01g/cm3, tensile strength 281MPa, yield strength 177MPa, elasticity modulus 93GPa, and graphite is fine
Fiber in dimension-aluminum matrix composite is evenly distributed, no Al4C3Interface product.
Comparative example:
Graphite fibre-aluminum matrix composite includes following raw material: 50g average particle size≤100nm aluminium powder, 5g average grain diameter
Copper powder, the 10g average grain diameter≤50um graphite fibre powder of≤100nm；
The preparation method of above-mentioned graphite fibre-aluminum matrix composite the following steps are included:
S1. it is flat that 50g average particle size≤100nm aluminium powder, 5g average grain diameter≤100nm copper powder, 10g are successively weighed respectively
The graphite fibre powder of equal partial size≤50um, it is spare；
S2. the standby raw material in step S1 is placed in super mixer, after mixing 2h under 600r/min, in 800MPa
Pressure under compression moulding, then being placed in preheating temperature is to be warming up in 600 DEG C of vacuum drying oven with the heating rate of 10 DEG C/min
1100 DEG C, and 2h is kept the temperature under 1100 DEG C, 3MPa, cool down later, when being cooled to 800 DEG C with the annealing rate of 5 DEG C/min
1h is kept the temperature, graphite fibre-aluminum matrix composite is prepared in taking-up when being cooled to 50 DEG C；
S3. graphite fibre-aluminum matrix composite in step S2 is tested, the graphite fibre-aluminum matrix composite
Density be 2.89g/cm3, tensile strength 212MPa, yield strength 92MPa, elasticity modulus 61GPa, and graphite is fine
Contain a small amount of Al in dimension-aluminum matrix composite structure4C3Interface product.
Claims (7)
1. one kind effectively reduces Al4C3Low-density graphite fibre-aluminum matrix composite of phase, which is characterized in that including following weight
The raw material of number proportion: 50-80 parts of nanometer aluminium powders, 4-8 parts of copper nanoparticles, 8-10 parts of graphite fibre micron powder, 17.8-20.4
Part glass powder, 7.88 parts of dioctyl phthalates, 3.76 parts of allyl methacrylates, 2.84 parts of N, N- dimethyl formyl
Amine.
2. graphite fibre-aluminum matrix composite according to claim 1, which is characterized in that the average particle size of the aluminium powder
≤ 100nm, average particle size≤100nm of copper powder, graphite fibre powder average particle size≤50um.
3. graphite fibre-aluminum matrix composite according to claim 1, which is characterized in that the glass powder includes 6g flat
The B of PbO, 3g average grain diameter≤50nm of equal partial size≤2.5um2O3, 2g average grain diameter≤50nm SiO2, 6g average grain diameter≤
The Bi of 50nm2O3。
4. graphite fibre-aluminum matrix composite according to claim 1, which is characterized in that match including following parts by weight
The raw material of ratio: 50g average particle size≤100nm aluminium powder, 5g average grain diameter≤100nm copper powder, 10g average grain diameter≤50um
Graphite fibre powder, 20.4g glass powder, 8mL dioctyl phthalate, 4mL allyl methacrylate, 3mLN, N- dimethyl
Formamide.
5. graphite fibre-aluminum matrix composite according to claim 1, which is characterized in that the graphite fibre-aluminium base is multiple
The preparation method of condensation material the following steps are included:
S1. 50-80 parts of nanometer aluminium powders, 4-8 parts of copper nanoparticles, 8-10 parts of micron graphite fiber powder are weighed, it is spare；
S2. with PbO, B2O3、SiO2、Bi2O3For raw material, it is configured to glass powder；
S3. 7.88 parts of dioctyl phthalates, 3.76 parts of allyl methacrylates, 2.84 parts of N, N- bis- are successively measured respectively
Methylformamide, it is spare；
S4. after mixing the standby raw material in step S1, the glass powder in step S2, the standby raw material in step S3, in pressure
Lower compression moulding, then be placed in vacuum drying oven, 2h is kept the temperature at 1100-1300 DEG C, is cooled down later, and graphite fibre is prepared
Dimension-aluminum matrix composite.
6. graphite fibre-aluminum matrix composite according to claim 5, which is characterized in that in the step S4, mixing is former
Expect the compression moulding under the pressure of 650-800MPa.
7. graphite fibre-aluminum matrix composite according to claim 6, which is characterized in that in the step S4, mixing is former
Material after compression moulding, keeps the temperature 2h under 1100-1300 DEG C, 3-5MPa under the pressure of 650-800MPa.
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Application publication date: 20190611 |