CN106567020A - Anti-corrosion graphite fiber AlSiC composite for electronic packaging and preparation method of composite - Google Patents
Anti-corrosion graphite fiber AlSiC composite for electronic packaging and preparation method of composite Download PDFInfo
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- CN106567020A CN106567020A CN201610992200.9A CN201610992200A CN106567020A CN 106567020 A CN106567020 A CN 106567020A CN 201610992200 A CN201610992200 A CN 201610992200A CN 106567020 A CN106567020 A CN 106567020A
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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
- C22C49/04—Light metals
- C22C49/06—Aluminium
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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
- C22C47/02—Pretreatment of the fibres or filaments
- C22C47/06—Pretreatment of the fibres or filaments by forming the fibres or filaments into a preformed structure, e.g. using a temporary binder to form a mat-like element
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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
- C22C47/08—Making alloys containing metallic or non-metallic fibres or filaments by contacting the fibres or filaments with molten metal, e.g. by infiltrating the fibres or filaments placed in a mould
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
The invention discloses an anti-corrosion graphite fiber AlSiC composite for electronic packaging. The composite is prepared from raw materials in parts by weight as follows: 11-13 parts of graphite fibers, 75-78 parts of SiC, 95-100 parts of a 6061 aluminium alloy, 0.4-0.6 parts of aluminum oxide, 4-4.3 parts of phosphoric acid, 13-14 parts of a pore-forming agent, 2-2.5 parts of PVP, a proper amount of dichloromethane, a proper amount of DMF, 1.3-1.5 parts of nano lanthanum borate, 1.5-1.8 parts of flaky carbon powder, 1.1-1.4 parts of nano aluminum hydroxide, 1.6-1.8 parts of germanium diboride and 43-45 parts of ethyl alcohol. The graphite fibers are added, a linear heat dissipation path is formed, and the heat dissipation performance is better than that of separate point contact of SiC; the germanium diboride is used, and the molten metal etching resistance, the active gas corrosion resistance, abrasion resistance and the oxidation resistance of the composite are improved; and the flaky carbon powder and the nano aluminum hydroxide are used cooperatively, and the heat dissipation performance and the strength of the composite are improved.
Description
Technical field
The present invention relates to Electronic Packaging heat sink material technical field, more particularly to a kind of corrosion-resistant graphite fibre used for electronic packaging
Dimension AlSiC composites and preparation method thereof.
Background technology
As microelectronic component develops to high-performance, lightweight and miniaturization, microelectronics proposes to get over to encapsulating material
Carry out harsher requirement.AlSiC composites have the protrusions such as the prices of raw materials are cheap, thermal conductivity is high, thermal coefficient of expansion is adjustable
Advantage, has obtained increasingly being widely applied in Electronic Packaging field.Experiment is that reinforcement, aluminium alloy are from ɑ-SiC particulate
Matrix, pore creating material, binding agent prepare AlSiC composites.Preparation technology adopts compression molding method and vacuum pressure infiltration method phase
With reference to technique.The microstructure of AlSiC composites, thing phase composition, thermal conductivity and hot expansibility respectively by SEM,
XRD, thermal conductivity instrument and thermal dilatometer are analyzed research.Archimedes method, quality volumetric method and the test of mercury injection apparatus method is respectively adopted
SiC prefabricated component porositys, and analysis is compared to test result.As a result show, quality volumetric method test result and AlSiC
In composite, Al alloys volume fraction is closest, is a kind of simple and reliable porosity method of testing；Archimedes method is surveyed
Test result is less than normal；Mercury injection apparatus method test result is slightly bigger than normal.Further probe between prefabricated component porosity and Content of Pore-forming Agents
Relation.As a result show, when Content of Pore-forming Agents is less, porosity increase is not obvious, when Content of Pore-forming Agents is higher than 5%, with pore-creating
The increase of agent content, porosity is generally in linearly increasing trend.When Content of Pore-forming Agents is 14%, porosity is up to nearly 40%, complete
Full up foot subsequently oozes Al needs.Thing phase and Research of microstructure result show, using compression molding method and vacuum pressure infiltration phase
With reference to the AlSiC composites that prepare of technique, the SiC particulate of two kinds of particle diameters of dense structure and size is uniformly distributed in Al substrate
In, interface bond strength is high；SiC strengthens granule with Al matrix interfaces reaction controlling well, Al does not occur4C3Deng brittlement phase.With
The mean thermal expansion coefficients of the composite based on 6061Al alloys is 7.00 × 10-6℃-1, thermal conductivity reach 155.1W/m.K,
Density is 3.1g/cm3, good performance is shown, the requirement of high performance electronic packaging material is fully met.Matrix is probed into
The impact of metal, consumption of binder, thickness SiC particulate ratio to heat conductivity.As a result show, based on rafifinal
Composite thermal conductivity higher than the composite based on 6061 aluminium alloys thermal conductivity；When consumption of binder is reduced,
Heat conductivity is improved；When one timing of SiC volume fractions, the thermal conductivity of AlSiC composites is with coarse granule in reinforcement
SiC ratios increase and increase.Pore creating material consumption, consumption of binder and thickness SiC particulate ratio be have studied to AlSiC composites
The impact of thermal coefficient of expansion.As a result show, pore creating material consumption increases, Thermal expansion coefficient of composites increase；Consumption of binder increases
Many, Thermal expansion coefficient of composites reduces；The thermal coefficient of expansion of AlSiC composites increases with coarse granule SiC ratios in reinforcement
Increase greatly.
The AlSiC composites heat conductivity for obtaining is good, and thermal coefficient of expansion is little, but SiC bad with the interface compatibility of aluminum,
Can be easily separated, cause the performance of material to be unable to lasting stability, and, pure granular SiC contact point areas are little, and heat conductivility can not
Reach good recently, need to improve, in addition it is also necessary to improve the corrosion resistance of material.
The content of the invention
The object of the invention is exactly for the defect for making up prior art, there is provided a kind of corrosion-resistant graphite fibre used for electronic packaging
AlSiC composites and preparation method thereof.
The present invention is achieved by the following technical solutions：
A kind of corrosion-resistant graphite fibre AlSiC composites used for electronic packaging, are prepared by the raw materials in：Graphite fibre
11-13, SiC75-78,6061 aluminium alloy 95-100, aluminium oxide 0.4-0.6, phosphatase 24-4.3, pore creating material 13-14, PVP2-2.5,
Methylene chloride q, appropriate DMF, nano boric acid lanthanum 1.3-1.5, flakey carbon dust 1.5-1.8, nano-aluminum hydroxide 1.1-1.4,
Two boronation germanium 1.6-1.8, ethanol 43-45.
The preparation method of the corrosion-resistant graphite fibre AlSiC composites used for electronic packaging, comprises the following steps：
（1）Dichloromethane by volume：DMF=2:8 are configured to solvent, add PVP to be configured to the solution of 12-13wt%, add
Nano boric acid lanthanum, magnetic agitation 12-13h under room temperature send into electrostatic spinning apparatus, and solution flow rate is set as 0.2ml/h, drives electricity
Press as 15kV, the distance of spinning head to collection device is 20cm, and ethanol is mixed homogeneously with graphite fibre, collection device is put into
In, the material being stirred continuously while spray webbing in collection device, spray webbing are finished, and are dried and are removed ethanol, forge at 350-400 DEG C
24-28 minutes are burnt, is crushed, is obtained modified graphite fiber；
（2）By modified graphite fiber and SiC, aluminium oxide, phosphoric acid, pore creating material, flakey carbon dust, nano-aluminum hydroxide, two boronations
Germanium mix homogeneously, it is compressing under 180-200MPa, obtain prefabricated component；
（3）6061 aluminium alloys are heated to into 780-800 DEG C of fusing, are cast on prefabricated component under vacuo, is infiltrated, imbibition pressure
Power is 8-9MPa, and the time is 18-20 minutes, then is cooled down, and repairs, obtains final product.
It is an advantage of the invention that：The present invention with the addition of graphite fibre, define the heat dissipation path of line, point more single than SiC
Contact improves thermal diffusivity, also reduces thermal coefficient of expansion, improves the intensity and toughness of composite；By using nanometer boron
Sour lanthanum carries out electrostatic spinning and sticks on graphite fibre, improves the roughening of graphite fibre, aligns when reducing compacting,
Reduce the anisotropy of heat conduction so that heat dispersion is stable, also improve the interface compatibility of graphite fibre and aluminium alloy, subtract
Al is lacked4C3Brittlement phase formed, improve material toughness；By using two boronation germanium, the resist melt metal of material is improve
Etch, the burn into wearability of resistant activity gas and non-oxidizability, with the use of flakey carbon dust, nano-aluminum hydroxide, improve
The thermal diffusivity and intensity of material.
Specific embodiment
A kind of corrosion-resistant graphite fibre AlSiC composites used for electronic packaging, by following weight portion（Kilogram）Raw material system
Into：Graphite fibre 11, SiC75,6061 aluminium alloys 95, aluminium oxide 0.4, phosphatase 24, pore creating material 13, PVP2, methylene chloride q,
Appropriate DMF, nano boric acid lanthanum 1.3, flakey carbon dust 1.5, nano-aluminum hydroxide 1.1, two boronation germanium 1.6, ethanol 43.
The preparation method of the corrosion-resistant graphite fibre AlSiC composites used for electronic packaging, comprises the following steps：
（1）Dichloromethane by volume：DMF=2:8 are configured to solvent, add PVP to be configured to the solution of 12wt%, add nanometer
Lanthanum borate, magnetic agitation 12h under room temperature send into electrostatic spinning apparatus, and solution flow rate is set as 0.2ml/h, and driving voltage is
15kV, the distance of spinning head to collection device is 20cm, ethanol is mixed homogeneously with graphite fibre, is put in collection device,
The material being stirred continuously while spray webbing in collection device, spray webbing are finished, and are dried and are removed ethanol, are calcined 24 minutes at 350 DEG C,
Crush, obtain modified graphite fiber；
（2）By modified graphite fiber and SiC, aluminium oxide, phosphoric acid, pore creating material, flakey carbon dust, nano-aluminum hydroxide, two boronations
Germanium mix homogeneously, it is compressing under 180MPa, obtain prefabricated component；
（3）6061 aluminium alloys are heated to into 780 DEG C of fusings, are cast on prefabricated component under vacuo, is infiltrated, infiltration pressure is
8MPa, time are 18 minutes, then are cooled down, and repair, obtain final product.
Experimental data：
The thermal coefficient of expansion of the embodiment composite at 22-100 DEG C is 6.7*10-6℃-1, thermal conductivity is 167W/m.k, close
Spend for 2.98g/cm3。
Claims (2)
1. a kind of corrosion-resistant graphite fibre AlSiC composites used for electronic packaging, it is characterised in that：By the raw material of following weight portion
Make：Graphite fibre 11-13, SiC75-78,6061 aluminium alloy 95-100, aluminium oxide 0.4-0.6, phosphatase 24-4.3, pore creating material
13-14, PVP2-2.5, methylene chloride q, appropriate DMF, nano boric acid lanthanum 1.3-1.5, flakey carbon dust 1.5-1.8, nanometer
Aluminium hydroxide 1.1-1.4, two boronation germanium 1.6-1.8, ethanol 43-45.
2. the preparation method of corrosion-resistant graphite fibre AlSiC composites used for electronic packaging according to claim 1, its feature
It is to comprise the following steps：
（1）Dichloromethane by volume：DMF=2:8 are configured to solvent, add PVP to be configured to the solution of 12-13wt%, add
Nano boric acid lanthanum, magnetic agitation 12-13h under room temperature send into electrostatic spinning apparatus, and solution flow rate is set as 0.2ml/h, drives electricity
Press as 15kV, the distance of spinning head to collection device is 20cm, and ethanol is mixed homogeneously with graphite fibre, collection device is put into
In, the material being stirred continuously while spray webbing in collection device, spray webbing are finished, and are dried and are removed ethanol, forge at 350-400 DEG C
24-28 minutes are burnt, is crushed, is obtained modified graphite fiber；
（2）By modified graphite fiber and SiC, aluminium oxide, phosphoric acid, pore creating material, flakey carbon dust, nano-aluminum hydroxide, two boronations
Germanium mix homogeneously, it is compressing under 180-200MPa, obtain prefabricated component；
（3）6061 aluminium alloys are heated to into 780-800 DEG C of fusing, are cast on prefabricated component under vacuo, is infiltrated, imbibition pressure
Power is 8-9MPa, and the time is 18-20 minutes, then is cooled down, and repairs, obtains final product.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610992200.9A CN106567020A (en) | 2016-11-11 | 2016-11-11 | Anti-corrosion graphite fiber AlSiC composite for electronic packaging and preparation method of composite |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610992200.9A CN106567020A (en) | 2016-11-11 | 2016-11-11 | Anti-corrosion graphite fiber AlSiC composite for electronic packaging and preparation method of composite |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413209A (en) * | 2008-11-12 | 2009-04-22 | 东华大学 | Method for carbon fiber surface modification of plasma coated with nano colloidal sols by plasma treatment |
| CN102815048A (en) * | 2011-06-10 | 2012-12-12 | 比亚迪股份有限公司 | AlSiC composite material, preparation method thereof, and Ni-plated AlSiC composite material |
| CN105789145A (en) * | 2016-03-22 | 2016-07-20 | 苏州捷德瑞精密机械有限公司 | Novel electronic package composite material and fabrication method thereof |
-
2016
- 2016-11-11 CN CN201610992200.9A patent/CN106567020A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413209A (en) * | 2008-11-12 | 2009-04-22 | 东华大学 | Method for carbon fiber surface modification of plasma coated with nano colloidal sols by plasma treatment |
| CN102815048A (en) * | 2011-06-10 | 2012-12-12 | 比亚迪股份有限公司 | AlSiC composite material, preparation method thereof, and Ni-plated AlSiC composite material |
| CN105789145A (en) * | 2016-03-22 | 2016-07-20 | 苏州捷德瑞精密机械有限公司 | Novel electronic package composite material and fabrication method thereof |
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Application publication date: 20170419 |
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