Simple spliced single crystal growth system
By designing a variable-size limiting device, the problems of uneven crystal quality and thermal conductivity after splicing large-size diamond single crystals were solved, achieving high-quality spliced single crystal growth and uniform heat dissipation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HENAN FAMOUS DIAMOND IND CO LTD
- Filing Date
- 2026-02-09
- Publication Date
- 2026-05-08
AI Technical Summary
During the growth of large-size diamond single crystals, the quality of the crystals is affected after splicing, and the side heat conduction is uneven, which is difficult to solve effectively with existing technologies.
A variable-size limiting device is adopted, including a molybdenum support, a molybdenum screw, and a fixing bar. By adjusting the limiting space, the edge of the spliced single crystal is ensured to be in close contact. The structure design of the molybdenum support and molybdenum screw is used to adapt to different growth size requirements.
It achieves the growth of high-quality spliced single crystals, suppresses polycrystalline growth at the seam, ensures smooth crystal surface and uniform heat dissipation at the edges, and improves the defects and stress distribution of spliced crystals.
Smart Images
Figure CN121992508A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of large-size diamond single crystal growth technology, specifically relating to a simple splicing single crystal growth system. Background Technology
[0002] In the field of large-size diamond single crystal growth, the industry usually uses spliced diamond single crystals to grow large sizes to meet the market demand for large-size single crystals. However, when splicing large-size single crystals to a high standard, the spliced crystals may move due to temperature changes, gas fluctuations, and changes in the crystal edges inside the furnace. This changes the intended splicing position and design, which in turn affects the quality of the spliced crystals and also causes uneven heat conduction on the sides of the crystals.
[0003] Therefore, there is an urgent need to propose a simple splicing single crystal growth system to avoid this phenomenon. Summary of the Invention
[0004] To address the problems existing in the prior art, this invention provides a simple splicing single crystal growth system to solve the problems in the prior art where changing the intended splicing position and design after splicing affects the crystal quality and causes uneven thermal conductivity on the crystal sides.
[0005] To achieve the above-mentioned objectives, this invention proposes a simple splicing single crystal growth system for suppressing the growth of polycrystalline crystals at the single crystal seam. The system includes a variable-size limiting device, which can adjust the size of the limiting space according to the needs of different single crystal growth splicing sizes.
[0006] Preferably, the variable size limiting device includes a molybdenum support, a molybdenum screw, and a fixing strip. The inner side of the fixing strip contacts the edge of the single crystal to be spliced, and the shape of the fixing strip matches the edge of the single crystal to be spliced. Each fixing strip has a threaded connecting seat on its outer side, and the threaded connecting seat is inclinedly connected to the corresponding fixing strip. The molybdenum support is annular, and several adjusting seats are evenly distributed on the outer periphery of the molybdenum support. Each adjusting seat is threadedly connected to a molybdenum screw. The molybdenum screw can be adjusted to pass through the adjusting seat and extend to the inner side of the molybdenum support. The inner end of the molybdenum screw is rotatably connected to the threaded connecting seat on the fixing strip. Each fixing strip forms an annular space that allows each spliced single crystal to come into close contact.
[0007] Preferably, the outer end of the molybdenum screw is located outside the adjusting seat, and a rotating block is fixed to the outer end of the molybdenum screw to facilitate rotating the molybdenum screw and thereby adjusting the position of the fixing strip inside the molybdenum support.
[0008] Preferably, the fixing strip is in the shape of a straight strip, and there are four fixing strips, which can be adjusted to form a square or a rectangle.
[0009] Preferably, the axial angle between the fixing strip and the threaded connection seat is 30-60°.
[0010] Preferably, the fixing strip is made of molybdenum.
[0011] The principle of this invention is that the structural design of the molybdenum support, molybdenum screw, and fixing strip ensures that the edges of each spliced single crystal are in close contact and that heat dissipation on the sides is uniform. The variable size solves the needs of different growth splicing sizes. The main principle is to cut the crystals to be spliced into squares, rectangles, or other regular shapes of the same fixed size as needed. Then, the cut crystals are placed in the squares, rectangles, or other regular shapes enclosed by the fixing strip structure and fixed by the molybdenum support. After fixing, growth is carried out according to the required process.
[0012] Compared with existing technologies, this solution has the following advantages:
[0013] This invention can meet the high-quality growth requirements of spliced single crystals of different sizes and regular irregular structures. Through the tight bonding of crystals, the growth of polycrystalline materials at the joint position can be suppressed, and the flatness of the grown crystal surface and the uniform heat dissipation of the edge crystals can be ensured, which greatly improves the defects and stress distribution at the spliced crystal position. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the variable size limiting device in one usage state of the present invention.
[0015] Figure 2 This is a schematic diagram of another usage state of the variable size limiting device in this invention.
[0016] Figure 3 This is the Raman spectrum of the product prepared in the embodiments of the present invention.
[0017] Figure 4 Physical photographs of the products prepared in the embodiments of the present invention. Detailed Implementation
[0018] The embodiments of the present invention are described in detail below. These embodiments are only used to explain the present invention and are not intended to limit the scope of the present invention.
[0019] Example like Figure 1-2 As shown, this embodiment proposes a simple splicing single crystal growth system to suppress the growth of polycrystalline material at the single crystal joint. It includes a variable size limiting device, which can adjust the size of the limiting space according to the needs of different single crystal growth splicing sizes.
[0020] Specifically, the variable size limiting device includes a molybdenum support 1, a molybdenum screw 2, and a fixing strip 3. The inner side of the fixing strip contacts the edge of the single crystal to be spliced, and the shape of the fixing strip matches the edge of the single crystal to be spliced. Each fixing strip has a threaded connecting seat 4 on its outer side, which is inclinedly connected to the corresponding fixing strip. The molybdenum support is annular, and four thousand adjusting seats 5 are evenly distributed on the outer periphery of the molybdenum support. Each adjusting seat is threadedly connected to a molybdenum screw. The molybdenum screw can be adjusted to pass through the adjusting seat and extend to the inner side of the molybdenum support. The inner end of the molybdenum screw is rotatably connected to the threaded connecting seat on the fixing strip. Each fixing strip forms an annular space that allows each spliced single crystal to come into close contact.
[0021] Continuing with the above embodiment, the outer end of the molybdenum screw is located outside the adjusting seat, and a rotating block 6 is fixed to the outer end of the molybdenum screw to facilitate rotating the molybdenum screw and thereby adjusting the position of the fixing strip inside the molybdenum support.
[0022] In this embodiment, the fixing strip is straight, and the four fixing strips can be adjusted to form a square or a rectangle. The axial angle between the fixing strip and the threaded connection seat is 45°, and the fixing strip is made of molybdenum.
[0023] The principle of this invention is that the structural design of the molybdenum support, molybdenum screw, and fixing strip ensures that the edges of each spliced single crystal are in close contact and that heat dissipation on the sides is uniform. The variable size solves the needs of different growth splicing sizes. The main principle is to cut the crystals to be spliced into squares or rectangles of fixed size as needed, and then place the cut crystals in the squares or rectangles enclosed by the fixing strip structure through the molybdenum support for fixation. After fixation, growth is carried out according to the required process.
[0024] Figure 3 The image shows the Raman spectrum of the product prepared in the examples. Figure 4 A photograph of the actual product prepared in this embodiment.
[0025] Through the above embodiments, it can be seen that the technical solution can meet the high-quality growth requirements of spliced single crystals of different sizes and regular irregular structures. The tight bonding of crystals can suppress the growth of polycrystalline crystals at the joint position, and ensure the flatness of the grown crystal surface and the uniform heat dissipation of the edge crystals, which greatly improves the defects and stress distribution at the spliced crystal position.
Claims
1. A simple splicing single crystal growth system for suppressing polycrystalline growth at the single crystal seam, characterized in that, It includes a variable-size limiting device, which can adjust the size of the limiting space according to the needs of different single crystal growth splicing sizes.
2. The simple splicing single crystal growth system according to claim 1, characterized in that, The variable-size limiting device includes a molybdenum support, a molybdenum screw, and a fixing strip. The inner side of the fixing strip contacts the edge of the single crystal to be spliced, and the shape of the fixing strip matches the edge of the single crystal to be spliced. Each fixing strip has a threaded connection seat on its outer side, which is inclinedly connected to the corresponding fixing strip. The molybdenum support is annular, and several adjusting seats are evenly distributed around its outer periphery. Each adjusting seat is threaded with a molybdenum screw. The molybdenum screw can be adjusted to pass through the adjusting seat and extend to the inner side of the molybdenum support. The inner end of the molybdenum screw is rotatably connected to the threaded connection seat on the fixing strip. Each fixing strip forms an annular space that allows each spliced single crystal to come into close contact.
3. The simple splicing single crystal growth system according to claim 2, characterized in that, The outer end of the molybdenum screw is located outside the adjusting seat, and a rotating block is fixed to the outer end of the molybdenum screw.
4. A simple splicing single crystal growth system according to claim 2, characterized in that, The molybdenum support is circular, and the fixing strips are straight strips. There are four fixing strips, and the four fixing strips can be adjusted to form a square or a rectangle.
5. A simple splicing single crystal growth system according to claim 4, characterized in that, The axial angle between the fixing bar and the threaded connection seat is 30-60°.
6. A simple splicing single crystal growth system according to any one of claims 1-5, characterized in that, The fixing strip is made of molybdenum.