CN104762504A - Fly ash aluminium-based composite material with good hear resistance and preparation method thereof - Google Patents
Fly ash aluminium-based composite material with good hear resistance and preparation method thereof Download PDFInfo
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- CN104762504A CN104762504A CN201510124995.7A CN201510124995A CN104762504A CN 104762504 A CN104762504 A CN 104762504A CN 201510124995 A CN201510124995 A CN 201510124995A CN 104762504 A CN104762504 A CN 104762504A
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Abstract
The invention discloses a fly ash aluminium-based composite material with good hear resistance, which comprises the following raw materials by weight part: 5-25 parts of fly ash microsphere, 65-85 parts of aluminium magnesium alloy powder, 4-6 parts of lithium powder, 4-6 parts of copper powder, 0.5-1.1 parts of polyvinyl alcohol, 10-15 parts of aluminium nitride and a proper amount of distilled water. The composite material solves the problems of poor dispersibility of a reinforcement and an aluminium-based matrix as well as poor wetability, the added aluminium nitride has the advantages of good thermal conductivity and small thermal expansion coefficient, and is a good heatproof impact-resistant material, heat resistance of the aluminium-based composite material can be promoted, and the composite material enhances application in optical fiber communication equipment.
Description
Technical field
The present invention relates to technical field of new material preparation, flyash aluminum matrix composite particularly relating to a kind of good heat resistance and preparation method thereof.
Background technology
The light conduction instrument that optical fiber is total reflection principle in a kind of fiber utilizing light to make at glass or plastics and reaches, has a wide range of applications in the communications field.In the construction and maintenance process of fibre optic installations, often need to carry out the operation such as welding, fiber stripping to optical fiber, need to use different types of equipment.The submount material of these equipment adopts aluminum alloy materials usually, the performance such as its intensity, hardness, wear-resisting, heat-resisting and heat conduction is relevant with the metallic substance of interpolation, cost performance is not high, expensive, current people can not be met to a series of requirements such as fiber plant base humidity, hardness, intensity, fire-retardant, heat conduction, heat-resisting, fire prevention.Flyash is one of industrial residue that the current discharge capacity of China is larger, and along with the development of power industry, the flyash quantity discharged of coal-burning power plant increases year by year, and a large amount of flyash does not add process, can produce airborne dust, atmosphere pollution; Entering water system then can cause river to silt up, and toxic chemical substance wherein also can work the mischief to human body and biology.At present, the domestic comprehensive utilization aspect research to flyash is many, but the rare report of the research preparing aluminum matrix composite aspect using flyash as enhanced granule.
Flyash, as the weighting material of aluminium alloy, reduces price and the density of matrix material, and adds weather resistance, abrasion resistance, intensity, rigidity, many performances such as heat-resisting, anticorrosive.But flyash diffustivity in aluminum-based matrix is bad, wettability is poor, and traditional its preparation process easily produces pore, bonding surface is insecure, affects the mechanical property of material, mechanical strength, weather resistance, rub and examine the performance such as coefficient and coefficient of thermal expansion.In order to solve this difficult problem, finding more applicable its preparation process and being undoubtedly an effective approach.
Summary of the invention
Flyash aluminum matrix composite that the object of this invention is to provide a kind of good heat resistance and preparation method thereof.
In order to realize object of the present invention, the present invention is by following scheme implementation:
A flyash aluminum matrix composite for good heat resistance, is made up of the raw material of following weight part: fly ash micro-sphere 5-25, aluminium-magnesium alloy powder 65-85, lithium powder 4-6, copper powder 4-6, polyvinyl alcohol 0.5-1.1, aluminium nitride 10-15, distilled water are appropriate;
The flyash aluminum matrix composite of a kind of good heat resistance of the present invention, be made up of following concrete steps:
(1) fly ash micro-sphere is immersed in 2-3 hour in the sulphuric acid soln of 10mol/l, then becomes neutral post-drying with distilled water wash surface, then utilized by copper metalikon atomised jet in spray gun to the fly ash micro-sphere surface of drying, to form one deck coating;
(2) aluminium nitride is calcined 1-2 hour under 500-600 ° of C, again the fly ash micro-sphere of aluminium nitride, aluminium-magnesium alloy powder, lithium powder and step (1) is mixed 2-4 hour in mixer, and then add polyvinyl alcohol and appropriate distilled water mix and blend formation hygrometric state compound, add after continuing mechanically mixing 2-3 hour again and be pressed into prefabricated component, dry for standby;
(3) prefabricated component is placed in tube furnace, passes into nitrogen, temperature is increased to 300-500 ° of C, keep 0.5-1 hour, then temperature is increased to 550-580 ° of C, high temperature sintering 2-3 hour, furnace cooling.
The flyash aluminum matrix composite of a kind of good heat resistance of the present invention, in described aluminium-magnesium alloy powder, the weight percent of magnesium is 3%-5%.
Advantage of the present invention is: the present invention's acid makes specific surface area increase to fly ash micro-sphere surface corrosion process, add and the consistency of aluminum magnesium alloy and the tensile strength improving matrix material in copper coating process, and the lithium powder added in aluminum magnesium alloy and copper powder, reduce interface performance, enhance the wettability with fly ash micro-sphere, solve flyash dispersed bad in aluminum magnesium alloy, the problem of wettability difference, the aluminium nitride thermal conductivity of adding is good, thermal expansivity is little, it is good heat shock resistance material, the resistance toheat of further promotion aluminum matrix composite, add the Application Areas in optical fiber communication equipment.
Specific embodiments
Below by specific examples, the present invention is described in detail.
A flyash aluminum matrix composite for good heat resistance, is made up of the raw material of following weight part (kilogram): fly ash micro-sphere 15, aluminium-magnesium alloy powder 70, lithium powder 4, copper powder 5, polyvinyl alcohol 0.7, aluminium nitride 11, distilled water are appropriate;
The flyash aluminum matrix composite of a kind of good heat resistance of the present invention, be made up of following concrete steps:
(1) fly ash micro-sphere to be immersed in the sulphuric acid soln of 10mol/l 2 hours, then to become neutral post-drying with distilled water wash surface, then copper is utilized metalikon in spray gun atomised jet to the fly ash micro-sphere surface of drying, formation one deck coating;
(2) aluminium nitride is calcined 1 hour under 600 ° of C, again the fly ash micro-sphere of aluminium nitride, aluminium-magnesium alloy powder, lithium powder and step (1) is mixed 2 hours in mixer, and then add polyvinyl alcohol and appropriate distilled water mix and blend formation hygrometric state compound, continue mechanically mixing again to add after 2 hours and be pressed into prefabricated component, dry for standby;
(3) prefabricated component is placed in tube furnace, passes into nitrogen, temperature is increased to 500 ° of C, keep 1 hour, then temperature is increased to 570 ° of C, high temperature sintering 2 hours, furnace cooling.
The flyash aluminum matrix composite of a kind of good heat resistance of the present invention, in described aluminium-magnesium alloy powder, the weight percent of magnesium is 4%.
Flyash Wear Resistance of Aluminum Matrix Composite average specific base aluminum magnesium alloy in the present embodiment is high by 60.3%, tensile strength mean height 12.7%, unit elongation mean height 23.0%.
Claims (3)
1. the flyash aluminum matrix composite of a good heat resistance, it is characterized in that, be made up of the raw material of following weight part: fly ash micro-sphere 5-25, aluminium-magnesium alloy powder 65-85, lithium powder 4-6, copper powder 4-6, polyvinyl alcohol 0.5-1.1, aluminium nitride 10-15, distilled water are appropriate.
2. the flyash aluminum matrix composite of a kind of good heat resistance according to claim 1, is characterized in that, be made up of following concrete steps:
(1) fly ash micro-sphere is immersed in 2-3 hour in the sulphuric acid soln of 10mol/l, then becomes neutral post-drying with distilled water wash surface, then utilized by copper metalikon atomised jet in spray gun to the fly ash micro-sphere surface of drying, to form one deck coating;
(2) aluminium nitride is calcined 1-2 hour under 500-600 ° of C, again the fly ash micro-sphere of aluminium nitride, aluminium-magnesium alloy powder, lithium powder and step (1) is mixed 2-4 hour in mixer, and then add polyvinyl alcohol and appropriate distilled water mix and blend formation hygrometric state compound, add after continuing mechanically mixing 2-3 hour again and be pressed into prefabricated component, dry for standby;
(3) prefabricated component is placed in tube furnace, passes into nitrogen, temperature is increased to 300-500 ° of C, keep 0.5-1 hour, then temperature is increased to 550-580 ° of C, high temperature sintering 2-3 hour, furnace cooling.
3. a kind of flyash aluminum matrix composite of good heat resistance according to claim 1-2, it is characterized in that, in described aluminium-magnesium alloy powder, the weight percent of magnesium is 3%-5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510124995.7A CN104762504A (en) | 2015-03-23 | 2015-03-23 | Fly ash aluminium-based composite material with good hear resistance and preparation method thereof |
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| CN201510124995.7A CN104762504A (en) | 2015-03-23 | 2015-03-23 | Fly ash aluminium-based composite material with good hear resistance and preparation method thereof |
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| CN104762504A true CN104762504A (en) | 2015-07-08 |
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| CN201510124995.7A Pending CN104762504A (en) | 2015-03-23 | 2015-03-23 | Fly ash aluminium-based composite material with good hear resistance and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106002001A (en) * | 2016-06-26 | 2016-10-12 | 周荣 | Method for preparing magnesium alloy thin strip brazing filler metal from waste powder coal dust through modification |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956149A (en) * | 2010-10-08 | 2011-01-26 | 昆明理工大学 | Process for preparing carbon nano-tube-enhanced aluminum-based composite material |
| CN102459671A (en) * | 2009-06-25 | 2012-05-16 | 法国肯联铝业 | Aluminium-copper-lithium alloy having improved mechanical strength and improved toughness |
| CN104164596A (en) * | 2014-07-22 | 2014-11-26 | 安徽冠宇光电科技有限公司 | LED aluminum-based composite heat-dissipating material containing modified fly ash |
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2015
- 2015-03-23 CN CN201510124995.7A patent/CN104762504A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102459671A (en) * | 2009-06-25 | 2012-05-16 | 法国肯联铝业 | Aluminium-copper-lithium alloy having improved mechanical strength and improved toughness |
| CN101956149A (en) * | 2010-10-08 | 2011-01-26 | 昆明理工大学 | Process for preparing carbon nano-tube-enhanced aluminum-based composite material |
| CN104164596A (en) * | 2014-07-22 | 2014-11-26 | 安徽冠宇光电科技有限公司 | LED aluminum-based composite heat-dissipating material containing modified fly ash |
Non-Patent Citations (1)
| Title |
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| 曹银南: "粉煤灰/Al合金复合材料的制备及摩擦磨损性能研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106002001A (en) * | 2016-06-26 | 2016-10-12 | 周荣 | Method for preparing magnesium alloy thin strip brazing filler metal from waste powder coal dust through modification |
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Application publication date: 20150708 |