CN111254332A - High-thermal-conductivity magnesium alloy material and product thereof - Google Patents
High-thermal-conductivity magnesium alloy material and product thereof Download PDFInfo
- Publication number
- CN111254332A CN111254332A CN201811462032.8A CN201811462032A CN111254332A CN 111254332 A CN111254332 A CN 111254332A CN 201811462032 A CN201811462032 A CN 201811462032A CN 111254332 A CN111254332 A CN 111254332A
- Authority
- CN
- China
- Prior art keywords
- magnesium alloy
- magnesium
- az91d
- grains
- alloy material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
- C22C1/1047—Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention relates to the technical field of magnesium alloy materials, and particularly discloses a high-thermal-conductivity magnesium alloy material and a product thereof. The magnesium alloy material with high thermal conductivity comprises AZ91D magnesium grains and graphene, wherein the mass ratio of the AZ91D magnesium grains to the graphene is 1000: 0.5 to 2. The high-thermal-conductivity magnesium alloy material has a good heat dissipation effect.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of magnesium alloy materials, in particular to a high-thermal-conductivity magnesium alloy material and a product thereof.
[ background of the invention ]
At present, the magnesium-aluminum alloy is widely used and is mainly used in aviation, space, transportation, chemical engineering, rocket and other industrial departments. The magnesium alloy is formed by adding other elements into magnesium as a base, and is characterized in that: the density is small (1.8 g/cm)3Left and right), high strength, large elastic modulus, good heat dissipation, good shock absorption, large impact load bearing capacity and good organic matter and alkali corrosion resistance. Magnesium has a specific gravity of approximately 2/3 for aluminum and 1/4 for iron. Magnesium is the lightest metal of practical metals, and has high strength and high rigidity.
Among them, AZ91D magnesium alloy belongs to the most commonly used Die-casting (Die-casting) or injection-molding (Thixo-molding) material among the series of magnesium-aluminum alloys. The a380 aluminum alloy is the most commonly used Die-casting (Die-casting) material in the aluminum alloy family. The heat conductivity coefficient of the AZ91D magnesium alloy is about 51W/(m.K); the thermal conductivity of the A380 aluminum alloy is about 96.2W/(m.K); the thermal conductivity of the two is actually doubled.
Taking a heat sink as an example, when the heat (temperature) produced by a heat source is transferred from the root to the top of the fin, theoretically the heat transfer of the a380 aluminum alloy is twice as fast as that of the AZ91D magnesium alloy. The temperature difference between the root and the top of the heat sink of the A380 material is smaller than that of the AZ91D material. However, the heat dissipation effect of the heat sink depends not only on heat conduction but also on heat convection of air. Because the temperature difference between the air temperature at the root part and the air temperature at the top part of the radiating fin made of the AZ91D magnesium alloy material is larger than that of the radiating fin made of the A380 material, the diffusion convection between the inside of the radiator and the outside air is accelerated, and the radiating efficiency is improved. In addition, because the magnesium alloy radiator can be made lighter than aluminum alloy, the thickness of the shell and the thickness of the fins can be made into thin walls, and the number of the fins can be increased when the same weight or smaller weight is obtained. The convection with the air in the external space is increased, and the high-temperature air in the radiator is directly butted with the magnesium alloy radiator, so that the convection with the external air is also achieved.
Therefore, it is necessary to develop a magnesium alloy based on AZ91D to improve the heat dissipation effect of the magnesium alloy.
[ summary of the invention ]
The invention aims to provide a high-thermal-conductivity magnesium alloy material and a product thereof, which have a good heat dissipation effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
the high-thermal-conductivity magnesium alloy material comprises AZ91D magnesium particles and graphene, wherein the mass ratio of the AZ91D magnesium particles to the graphene is 1000: 0.5 to 2.
Further, the graphene is at least one of single-layer graphene, double-layer graphene, few-layer graphene and multi-layer graphene.
Further, the graphene is single-layer graphene; the sheet diameter of the single-layer graphene is 0.5-20 mu m; the thickness of the single-layer graphene is 0.5 nm-1.8 nm.
Further, based on the total weight of the AZ91D magnesium particles, 75% or more of the AZ91D magnesium particles have an outer diameter of 1.4mm to 2 mm; and the outer diameter of 25 percent or less of the AZ91D magnesium grains is larger than 2 mm.
Furthermore, the outer diameter of 60% or more of the AZ91D magnesium particles is 1.7mm to 2mm, based on the total weight of the AZ91D magnesium particles.
Furthermore, the outer diameter of 5% or less of the AZ91D magnesium particles based on the total weight of the AZ91D magnesium particles is 2.4mm or more.
Furthermore, 0.6% or less of the AZ91D magnesium particles have an outer diameter of 2.8mm or more, based on the total weight of the AZ91D magnesium particles.
The high-thermal-conductivity magnesium alloy product is prepared from the high-thermal-conductivity magnesium alloy material.
The invention has the beneficial effects that: by adding a certain proportion of graphene in AZ91D magnesium grains, a high-thermal-conductivity magnesium alloy material can be obtained, and the thermal conductivity of the AZ91D magnesium alloy is further improved. The product made of the high-thermal-conductivity magnesium alloy material has a good heat dissipation effect.
[ detailed description ] embodiments
The technical solution of the present invention is further explained by the following embodiments.
Example 1
A high-thermal-conductivity magnesium alloy material comprises AZ91D magnesium grains and single-layer graphene, wherein the mass ratio of the AZ91D magnesium grains to the graphene is 1000: 1. wherein the sheet diameter of the single-layer graphene is 0.5-20 μm; the thickness of the single-layer graphene is 0.5 nm-1.8 nm. Based on the total weight of the AZ91D magnesium grains, the external diameter of 15 percent of AZ91D magnesium grains is 1.4 mm-1.7 mm; the outer diameter of 60 percent of AZ91D magnesium grains is 1.7 mm-2 mm; the outer diameter of 20 percent of AZ91D magnesium grains is 2 mm-2.4 mm; the outer diameter of 4.4 percent of AZ91D magnesium grains is 2.4 mm-2.8 mm; 0.6% of AZ91D magnesium grains had an outer diameter of 2.8mm or more.
When the magnesium alloy product with high thermal conductivity is prepared, the method comprises the following steps:
1) preparing; 150kg of AZ91D magnesium particles and 150g of black single-layer graphene were prepared according to the above specifications.
2) Mixing; firstly, 50kg of AZ91D magnesium particles and 150g of single-layer graphene are put into a V-shaped stirrer and mixed for 3 min; adding 50kg of AZ91D magnesium granules, and mixing for 3 min; and then adding 50kg of AZ91D magnesium particles, and mixing for 3min to obtain the uniformly mixed high-thermal-conductivity magnesium alloy material. The mixed high-heat-conductivity magnesium alloy material can be filled into a PE bag of a special iron barrel lining, the sealing position of the PE bag is tightened, an iron cover of the special iron barrel is locked by a hoop and stored in a drying place.
3) And (5) semi-solid forming. And heating the mixed high-thermal-conductivity magnesium alloy material to be in a semi-solid viscous paste state, and then performing injection molding to obtain the high-thermal-conductivity magnesium alloy product.
Example 2
A high-thermal-conductivity magnesium alloy material comprises AZ91D magnesium grains and single-layer graphene, wherein the mass ratio of the AZ91D magnesium grains to the single-layer graphene is 1000: 1.5. wherein the sheet diameter of the single-layer graphene is 0.5-20 μm; the thickness of the single-layer graphene is 0.5 nm-1.8 nm. Based on the total weight of the AZ91D magnesium grains, the external diameter of 15 percent of AZ91D magnesium grains is 1.4 mm-1.7 mm; the outer diameter of 60 percent of AZ91D magnesium grains is 1.7 mm-2 mm; the outer diameter of 20 percent of AZ91D magnesium grains is 2 mm-2.4 mm; the outer diameter of 4.4 percent of AZ91D magnesium grains is 2.4 mm-2.8 mm; 0.6% of AZ91D magnesium grains had an outer diameter of 2.8mm or more.
According to the specification requirements, the preparation method of the embodiment 1 is adopted to prepare the high-thermal-conductivity magnesium alloy product.
Example 3
A high-thermal-conductivity magnesium alloy material comprises AZ91D magnesium grains and single-layer graphene, wherein the mass ratio of the AZ91D magnesium grains to the single-layer graphene is 1000: 2. wherein the sheet diameter of the single-layer graphene is 0.5-20 μm; the thickness of the single-layer graphene is 0.5 nm-1.8 nm. Based on the total weight of the AZ91D magnesium grains, the external diameter of 15 percent of AZ91D magnesium grains is 1.4 mm-1.7 mm; the outer diameter of 60 percent of AZ91D magnesium grains is 1.7 mm-2 mm; the outer diameter of 20 percent of AZ91D magnesium grains is 2 mm-2.4 mm; the outer diameter of 4.4 percent of AZ91D magnesium grains is 2.4 mm-2.8 mm; 0.6% of AZ91D magnesium grains had an outer diameter of 2.8mm or more.
According to the specification requirements, the preparation method of the embodiment 1 is adopted to prepare the high-thermal-conductivity magnesium alloy product.
The thermal conductivity coefficient of the three high thermal conductivity magnesium alloy products obtained in the three embodiments is tested to be 58W/(m.K) -68W/(m.K). The heat conductivity coefficient of the common AZ91D magnesium alloy product is 42W/(m.K) to 52W/(m.K). Therefore, compared with the common AZ91D magnesium alloy product, the magnesium alloy product with high thermal conductivity prepared by the magnesium alloy material with high thermal conductivity has better thermal conductivity, which is improved by about 30%.
The technical principles of the present invention have been described above in connection with specific embodiments, which are intended to explain the principles of the present invention and should not be construed as limiting the scope of the present invention in any way. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (8)
1. The high-thermal-conductivity magnesium alloy material is characterized by comprising AZ91D magnesium grains and graphene, wherein the mass ratio of the AZ91D magnesium grains to the graphene is 1000: 0.5 to 2.
2. The high-thermal-conductivity magnesium alloy material according to claim 1, wherein the graphene is at least one of single-layer graphene, double-layer graphene, few-layer graphene, and multi-layer graphene.
3. The high-thermal-conductivity magnesium alloy material according to claim 2, wherein the graphene is a single-layer graphene; the sheet diameter of the single-layer graphene is 0.5-20 mu m; the thickness of the single-layer graphene is 0.5 nm-1.8 nm.
4. The high thermal conductivity magnesium alloy material according to claim 1, wherein 75% or more of the AZ91D magnesium grains have an outer diameter of 1.4mm to 2mm, based on the total weight of the AZ91D magnesium grains; and the outer diameter of 25 percent or less of the AZ91D magnesium grains is larger than 2 mm.
5. The magnesium alloy material with high thermal conductivity according to claim 4, wherein 60% or more of the AZ91D magnesium grains have an outer diameter of 1.7mm to 2mm, based on the total weight of the AZ91D magnesium grains.
6. The magnesium alloy material with high thermal conductivity according to claim 4, wherein the AZ91D magnesium grains have an outer diameter of 5% or less based on the total weight of the AZ91D magnesium grains of 2.4mm or more.
7. The magnesium alloy material with high thermal conductivity according to claim 6, wherein the AZ91D magnesium grains have an outer diameter of 2.8mm or more in an amount of 0.6% or less based on the total weight of the AZ91D magnesium grains.
8. A high thermal conductivity magnesium alloy product, characterized in that the high thermal conductivity magnesium alloy product is made of the high thermal conductivity magnesium alloy material according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811462032.8A CN111254332A (en) | 2018-11-30 | 2018-11-30 | High-thermal-conductivity magnesium alloy material and product thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811462032.8A CN111254332A (en) | 2018-11-30 | 2018-11-30 | High-thermal-conductivity magnesium alloy material and product thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111254332A true CN111254332A (en) | 2020-06-09 |
Family
ID=70950542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811462032.8A Pending CN111254332A (en) | 2018-11-30 | 2018-11-30 | High-thermal-conductivity magnesium alloy material and product thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111254332A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113430413A (en) * | 2021-06-23 | 2021-09-24 | 安徽省沃尔森特种金属材料制备有限公司 | Processing technology of high-strength AZ91D alloy material |
| CN114959336A (en) * | 2022-01-30 | 2022-08-30 | 安徽工业大学 | Preparation method of magnesium-based composite material for thixotropic injection molding and magnesium-based composite material prepared by preparation method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106367648A (en) * | 2016-09-18 | 2017-02-01 | 冯军 | Magnesium alloy wire doped with graphene and preparing method thereof |
| CN107058833A (en) * | 2016-11-08 | 2017-08-18 | 中航装甲科技有限公司 | A kind of graphene composite armour material and preparation method thereof |
| US20170268088A1 (en) * | 2014-02-21 | 2017-09-21 | Terves Inc. | High Conductivity Magnesium Alloy |
| CN107893165A (en) * | 2017-11-22 | 2018-04-10 | 上海紫燕合金应用科技有限公司 | The preparation method of the magnesium alloy structural part of graphene doping |
| CN108251679A (en) * | 2018-01-18 | 2018-07-06 | 中北大学 | A kind of preparation method of graphene enhancing magnesium-based composite material |
| CN108838401A (en) * | 2018-07-10 | 2018-11-20 | 兰州理工大学 | The method for preparing graphene enhancing magnesium-based composite material based on powder thixotropic forming |
-
2018
- 2018-11-30 CN CN201811462032.8A patent/CN111254332A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170268088A1 (en) * | 2014-02-21 | 2017-09-21 | Terves Inc. | High Conductivity Magnesium Alloy |
| CN106367648A (en) * | 2016-09-18 | 2017-02-01 | 冯军 | Magnesium alloy wire doped with graphene and preparing method thereof |
| CN107058833A (en) * | 2016-11-08 | 2017-08-18 | 中航装甲科技有限公司 | A kind of graphene composite armour material and preparation method thereof |
| CN107893165A (en) * | 2017-11-22 | 2018-04-10 | 上海紫燕合金应用科技有限公司 | The preparation method of the magnesium alloy structural part of graphene doping |
| CN108251679A (en) * | 2018-01-18 | 2018-07-06 | 中北大学 | A kind of preparation method of graphene enhancing magnesium-based composite material |
| CN108838401A (en) * | 2018-07-10 | 2018-11-20 | 兰州理工大学 | The method for preparing graphene enhancing magnesium-based composite material based on powder thixotropic forming |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113430413A (en) * | 2021-06-23 | 2021-09-24 | 安徽省沃尔森特种金属材料制备有限公司 | Processing technology of high-strength AZ91D alloy material |
| CN114959336A (en) * | 2022-01-30 | 2022-08-30 | 安徽工业大学 | Preparation method of magnesium-based composite material for thixotropic injection molding and magnesium-based composite material prepared by preparation method |
| CN114959336B (en) * | 2022-01-30 | 2023-09-15 | 安徽工业大学 | Preparation method of magnesium-based composite material for thixotropic injection molding and magnesium-based composite material prepared by preparation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100490618C (en) | Heat radiator | |
| CN104726069B (en) | A kind of novel phase-change material composition | |
| CN111254332A (en) | High-thermal-conductivity magnesium alloy material and product thereof | |
| CN106252785A (en) | A kind of lithium battery module radiator structure | |
| CN103526082A (en) | High thermal conductivity cast aluminium alloy and preparation method thereof | |
| CN108601288B (en) | High-power matrix fin enhanced heat exchange phase change heat sink | |
| CN105733518B (en) | Integrated energy storage structure, preparation method and application | |
| CN110260697B (en) | Aluminum-based soaking plate | |
| CN103938036B (en) | A kind of nearly cocrystallized Al-Si alloy of pressure part high performance casting and preparation method | |
| CN110190356A (en) | A kind of new-energy automobile power battery pallet with heat-pipe radiating apparatus | |
| Shi et al. | Microstructure and compressive properties of aluminum foams made by 6063 aluminum alloy and pure aluminum | |
| Elarem et al. | Numerical analysis of a built‐in thermal storage system of metal hydride and nanoparticles enhanced phase change material and nanofluid | |
| WO2016179734A1 (en) | Magnesium-aluminum-silicon carbide intermediate alloy material and preparation method therefor | |
| CN103568390A (en) | Graphite composite metallic material | |
| CN102965555A (en) | Corrosion-resistant magnesium alloy and preparation method thereof | |
| CN113308160A (en) | Efficient heat dissipation coating for surface of aluminum alloy radiator and preparation method thereof | |
| CN106410314B (en) | Heat exchange structure with annular fins and heat dissipation device with heat exchange structure | |
| CN202911224U (en) | Graphite composite metallic material | |
| CN104900794B (en) | LED light radiator structure | |
| CN104404316B (en) | Aluminum-silicon composite material | |
| CN104561847A (en) | Silicon particle and carbon nanotube mixing enhanced aluminum-based composite material and preparation method thereof | |
| CN207134163U (en) | High efficiency and heat radiation cable | |
| KR102293590B1 (en) | Thermal management module for battery of electric aircraft | |
| CN104896344B (en) | Bulkhead lamp | |
| CN114525431A (en) | Aluminum-based phase-change heat storage alloy composite material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200609 |
|
| WD01 | Invention patent application deemed withdrawn after publication |