A diamond-copper compact

Abstract

The utility model relates to the technical field of composite material discloses a kind of diamond copper composite block, including metal copper block, and the diamond skeleton embedded in the inside of metal copper block. The diamond skeleton includes hollow cylindrical outer frame, and grid frame filled and fixed in outer frame;The grid frame is formed by multiple unit cavities;The unit cavity is regular polygonal prism;Adjacent unit cavities are fixedly connected by shared side wall;Multiple unit cavities are arrayed and closely arranged in outer frame. In the diamond copper composite block of the utility model, internal diamond particles are arranged according to the structure of diamond skeleton, heat conduction channel is constructed in metal copper block by diamond skeleton, which is conducive to the rapid transmission of heat from diamond particle channel, thereby improving the heat conduction efficiency of material.

Description

Technical Field

[0001] This utility model belongs to the field of composite material technology, and in particular relates to a diamond-copper composite block. Background Technology

[0002] With the rapid development of electronic devices towards high power and miniaturization, heat dissipation has become a key bottleneck restricting device performance and reliability. Diamond, possessing the highest theoretical thermal conductivity found in nature (>2000 W / m·K), is considered an ideal reinforcing phase for next-generation thermal management materials. Therefore, diamond particle-reinforced metal matrix composites (such as diamond / copper, diamond / aluminum, etc.) have attracted widespread attention in recent years due to their potentially high thermal conductivity and tunable coefficient of thermal expansion.

[0003] Diamond-copper composites are high-performance thermal management materials with diamond particles as the reinforcing phase and copper as the matrix, possessing both ultra-high thermal conductivity and controllable thermal expansion characteristics. However, in existing diamond-copper composites, the diamond particles are randomly distributed within the copper matrix, exhibiting a scattered distribution with large fluctuations in the spacing between adjacent particles. The lack of effective connections between the randomly dispersed diamond particles leads to interruptions in the phonon (heat carrier) transfer path, a significant increase in interfacial thermal resistance, and the inability to form an effective heat transfer path.

[0004] Therefore, there is an urgent need for a diamond-copper composite block to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to overcome the existing technical problems and provide a diamond-copper composite block.

[0006] To achieve the above objectives, this utility model is implemented according to the following technical solution:

[0007] A diamond-copper composite block: comprising a copper block and a diamond framework embedded inside the copper block.

[0008] Preferably, the diamond skeleton includes a hollow cylindrical outer frame and a grid frame filled and fixed inside the outer frame;

[0009] The grid frame is composed of multiple unit cavities; each unit cavity is in the shape of a regular polygonal prism; adjacent unit cavities are fixedly connected by a shared sidewall; the multiple unit cavities are arranged in a close array within the outer frame;

[0010] The shape of the outer edge of the grid frame is defined by the inner wall of the outer frame, and the outer edge of the grid frame is fixedly connected to the inner wall of the outer frame.

[0011] Preferably, the unit cavity is one of the following: equilateral triangular prism, square prism, or regular hexagonal prism.

[0012] Preferably, the unit cavity is a regular hexagonal prism.

[0013] The unit cavity is a regular hexagonal prism. The diamond framework forms diamond pathways inside the copper block, providing a path for heat conduction. At the same time, the included angle between each diamond pathway is 120 degrees. This structure can also improve the compressive strength of the diamond / copper material and enhance its mechanical properties.

[0014] Preferably, the diamond framework completely penetrates the copper block from top to bottom.

[0015] Preferably, the thickness of the sidewalls and outer frame in the diamond framework is 0.1-0.5 mm.

[0016] Preferably, in the diamond-copper composite block, the volume of the diamond framework is 30 vol.% to 65 vol.% of the volume of the diamond-copper composite block.

[0017] The diamond-copper composite block of this invention can be prepared using existing technology.

[0018] Specifically, it can be prepared using the following methods:

[0019] After mixing diamond micro powder with a binder, diamond particles are printed according to the above structure using a direct-write 3D printing device to obtain a diamond framework with a specific structure. Then, a diamond-copper composite block is prepared by vacuum infiltration process.

[0020] Compared with diamond-copper composite materials prepared using diamond-copper mixed powder under the same process, the diamond-copper composite material with diamond particles arranged in a hexagonal pattern achieves a thermal conductivity of 620 W·m / K (this thermal conductivity can be achieved when the unit cavity of this novel diamond composite block is a regular hexagonal prism shape and the volume fraction of the diamond skeleton is 50 vol.%), while the thermal conductivity of the diamond-copper composite material prepared using diamond-copper mixed powder under the same process is 588 W·m / K. Therefore, the thermal conductivity of this invention is improved by 5.44%.

[0021] This utility model achieves the following beneficial effects:

[0022] In the diamond-copper composite block of this invention, the internal diamond particles are arranged according to the structure of a diamond skeleton. The diamond skeleton constructs a heat conduction channel inside the copper block, which facilitates the rapid transfer of heat from the diamond particle channels, thereby improving the thermal conductivity of the material. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0024] Figure 2 for Figure 1 A sectional view along the EE line;

[0025] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of Embodiment 4 of this utility model;

[0028] Figure 6 This is a structural schematic diagram of Embodiment 5 of the present invention.

[0029] In the diagram: 1. Copper block; 2. Diamond skeleton; 3. Outer frame; 4. Grid frame; 5. Unit cavity; 6. Side wall. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0031] Example 1

[0032] like Figures 1 to 2 As shown, a diamond-copper composite block includes a copper block 1 and a diamond framework 2 embedded inside the copper block.

[0033] The diamond skeleton includes a hollow cylindrical outer frame 3 and a grid frame 4 filled and fixed inside the outer frame; the grid frame is composed of multiple unit cavities 5; adjacent unit cavities are fixedly connected by a common sidewall 6; the multiple unit cavities are arranged in an array and closely within the outer frame;

[0034] The shape of the outer edge of the grid frame is defined by the inner wall of the outer frame, and the outer edge of the grid frame is fixedly connected to the inner wall of the outer frame.

[0035] The unit cavity is a regular hexagonal prism. The diamond framework completely penetrates the copper block from top to bottom.

[0036] In the diamond framework, the thickness of the sidewalls and outer frame is 0.1 mm.

[0037] In the diamond-copper composite block, the volume of the diamond framework is 35 vol.% of the volume of the diamond-copper composite block.

[0038] Example 2

[0039] like Figure 3As shown, a diamond-copper composite block includes a copper block 1 and a diamond framework 2 embedded inside the copper block.

[0040] The diamond skeleton includes a hollow cylindrical outer frame 3 and a grid frame 4 filled and fixed inside the outer frame; the grid frame is composed of multiple unit cavities 5; adjacent unit cavities are fixedly connected by a common sidewall 6; the multiple unit cavities are arranged in an array and closely within the outer frame;

[0041] The shape of the outer edge of the grid frame is defined by the inner wall of the outer frame, and the outer edge of the grid frame is fixedly connected to the inner wall of the outer frame.

[0042] The unit cavity is a regular hexagonal prism. The diamond framework completely penetrates the copper block from top to bottom.

[0043] The volume of the diamond framework is 35.36 vol.% of the volume of the diamond-copper composite block.

[0044] Example 3

[0045] like Figure 4 As shown, a diamond-copper composite block includes a copper block 1 and a diamond framework 2 embedded inside the copper block.

[0046] The diamond skeleton includes a hollow cylindrical outer frame 3 and a grid frame 4 filled and fixed inside the outer frame; the grid frame is composed of multiple unit cavities 5; adjacent unit cavities are fixedly connected by a common sidewall 6; the multiple unit cavities are arranged in an array and closely within the outer frame;

[0047] The shape of the outer edge of the grid frame is defined by the inner wall of the outer frame, and the outer edge of the grid frame is fixedly connected to the inner wall of the outer frame.

[0048] The unit cavity is a regular hexagonal prism. The diamond framework completely penetrates the copper block from top to bottom.

[0049] The volume of the diamond framework is 42.51 vol.% of the volume of the diamond-copper composite block.

[0050] Example 4

[0051] like Figure 5 As shown, a diamond-copper composite block includes a copper block 1 and a diamond framework 2 embedded inside the copper block.

[0052] The diamond skeleton includes a hollow cylindrical outer frame 3 and a grid frame 4 filled and fixed inside the outer frame; the grid frame is composed of multiple unit cavities 5; adjacent unit cavities are fixedly connected by a common sidewall 6; the multiple unit cavities are arranged in an array and closely within the outer frame;

[0053] The shape of the outer edge of the grid frame is defined by the inner wall of the outer frame, and the outer edge of the grid frame is fixedly connected to the inner wall of the outer frame.

[0054] The unit cavity is a regular hexagonal prism. The diamond framework completely penetrates the copper block from top to bottom.

[0055] The volume of the diamond framework is 43.5 vol.% of the volume of the diamond-copper composite block.

[0056] Example 5

[0057] like Figure 6 As shown, a diamond-copper composite block includes a copper block 1 and a diamond framework 2 embedded inside the copper block.

[0058] The diamond skeleton includes a hollow cylindrical outer frame 3 and a grid frame 4 filled and fixed inside the outer frame; the grid frame is composed of multiple unit cavities 5; adjacent unit cavities are fixedly connected by a common sidewall 6; the multiple unit cavities are arranged in an array and closely within the outer frame;

[0059] The shape of the outer edge of the grid frame is defined by the inner wall of the outer frame, and the outer edge of the grid frame is fixedly connected to the inner wall of the outer frame.

[0060] The unit cavity is a regular hexagonal prism. The diamond framework completely penetrates the copper block from top to bottom.

[0061] The volume of the diamond framework is 55 vol.% of the volume of the diamond-copper composite block.

[0062] The technical solution of this utility model is not limited to the specific embodiments described above. All technical modifications made based on the technical solution of this utility model fall within the protection scope of this utility model.

Claims

1. A diamond-copper composite block, characterized in that: Includes a copper block and a diamond framework embedded inside the copper block; The diamond framework includes a hollow cylindrical outer frame and a grid frame that is filled and fixed inside the outer frame; The grid frame is composed of multiple unit cavities; each unit cavity is in the shape of a regular polygonal prism; adjacent unit cavities are fixedly connected by a shared sidewall; the multiple unit cavities are arranged in a close array within the outer frame; The shape of the outer edge of the grid frame is defined by the inner wall of the outer frame, and the outer edge of the grid frame is fixedly connected to the inner wall of the outer frame. The unit cavity is a regular hexagonal prism.

2. The diamond-copper composite block according to claim 1, characterized in that: The diamond framework runs completely through the copper block from top to bottom.

3. The diamond-copper composite block according to claim 1, characterized in that: In a diamond framework, the thickness of the sidewalls and outer frame is 0.1-0.5 mm.

4. The diamond-copper composite block according to claim 1, characterized in that: In diamond-copper composite blocks, the volume of the diamond framework is 30 vol.%-65 vol.% of the volume of the diamond-copper composite block.

Images