Novel crucible for synthesizing silicon carbide powder

Abstract

The utility model discloses a novel crucible for synthesizing silicon carbide powder, which comprises a crucible main body, the outer surface of the crucible main body is connected with a slow heating and cooling mechanism, the two sides of the slow heating and cooling mechanism are both fixedly connected with connecting blocks, one end of each connecting block is fixedly connected with a dismounting and fixing mechanism, and the other end of each connecting block is fixedly connected with a connecting rod. The slow heating and cooling mechanism comprises ceramic fibers, aluminum silicate fibers and perlite, the ceramic fibers are connected to the outer surface of the crucible body, the aluminum silicate fibers are connected to one ends of the ceramic fibers, and the perlite is arranged between the ceramic fibers and the aluminum silicate fibers; the crucible is simple in structure and reasonable in design, the phenomenon that when the temperature of the crucible body changes violently, the crucible body is broken or deformed due to thermal shock, and the whole synthesis process of materials is affected is avoided, the disassembly and assembly fixing mechanism comprises the insertion rod, the telescopic rod and the spring, the trouble of repairing the whole crucible body in the later period is avoided, and the maintenance cost in long-term use is reduced.

Description

Technical Field

[0001] This utility model relates to the field of silicon carbide powder synthesis technology, specifically a novel crucible for silicon carbide powder synthesis. Background Technology

[0002] Silicon carbide, as a representative material of third-generation semiconductors, is widely used in power electronics, microwave radio frequency, aerospace, artificial satellites, automotive electronic equipment, radar communications, and other fields. However, not only is its single-crystal growth process difficult, but the synthesis of the raw materials required for growth also presents many challenges. The selection of crucible materials is a crucial issue in the synthesis of silicon carbide powder. Crucibles are essential tools for containing and heating raw materials, and are typically made of high-temperature resistant and corrosion-resistant materials. In the synthesis of silicon carbide powder, the crucible must be able to withstand the high-temperature environment and must not chemically react with the reactants.

[0003] The shortcomings of existing technology:

[0004] Currently, most crucibles used in the synthesis of novel silicon carbide powders, while made of materials such as graphite and alumina ceramics that can withstand high temperatures, still have temperature limits. These crucibles are susceptible to thermal shock at high temperatures, especially when temperature changes are drastic. Thermal shock can cause the crucible to crack or deform, which can affect the entire synthesis process. Utility Model Content

[0005] The purpose of this invention is to provide a novel crucible for synthesizing silicon carbide powder, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel crucible for synthesizing silicon carbide powder, comprising a crucible body, a slow heating and cooling mechanism connected to the outer surface of the crucible body, connecting blocks fixedly connected to both sides of the slow heating and cooling mechanism, and a disassembly and fixing mechanism fixedly connected to one end of each connecting block; the slow heating and cooling mechanism includes:

[0007] Ceramic fibers, which are attached to the outer surface of the crucible body;

[0008] Aluminosilicate fibers, wherein the aluminosilicate fibers are connected to one end of ceramic fibers;

[0009] Perlite, wherein the perlite is disposed between ceramic fibers and aluminosilicate fibers.

[0010] Preferably, the disassembly and fixing mechanism includes:

[0011] A plug rod, which is fixedly connected to one side of the connecting block;

[0012] Telescopic rod, which is welded to the top of the insertion rod;

[0013] A spring, which is connected inside the telescopic rod.

[0014] Preferably, the top of the crucible body is connected to a crucible edge to enhance the overall structural stability of the crucible body.

[0015] Preferably, limit blocks are fixedly connected to both sides of the crucible edge, and the surface of the limit blocks is provided with limit holes that match the telescopic rod to increase the robustness of the slow heating and cooling mechanism.

[0016] Preferably, the crucible body material is silicon carbide, which has antioxidant properties and avoids reaction with oxygen at high temperatures.

[0017] Preferably, the perlite is a lightweight material formed by the melting and expansion of volcanic rock, and has a low thermal conductivity, thus reducing the density of ceramic fibers or aluminosilicate fibers.

[0018] Preferably, the ceramic fiber is provided with limiting grooves on both sides, and a connecting block is fixedly connected inside the limiting groove to increase the connection stability between the slow heating and cooling mechanism and the disassembly and fixing mechanism.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. The novel crucible for synthesizing silicon carbide powder includes a slow heating and cooling mechanism comprising ceramic fiber, perlite, and aluminosilicate fiber. The ceramic fiber maintains its thermal insulation properties at high temperatures, reduces heat conduction, protects the surface of the crucible body and the external environment from excessive high temperatures, and has thermal shock resistance. Under conditions of drastic temperature changes, it can effectively prevent cracks or damage to the crucible body due to thermal expansion. Combined with aluminosilicate fiber, it effectively isolates the external temperature to the greatest extent, ensuring temperature stability inside the crucible body. Furthermore, the perlite effectively reduces the density of the ceramic fiber or aluminosilicate fiber, preventing thermal shock from causing the crucible body to crack or deform when the temperature of the crucible body changes drastically, thus affecting the entire material synthesis process.

[0021] 2. This novel crucible for synthesizing silicon carbide powder has a disassembly and fixing mechanism comprising an insert rod, a telescopic rod, and a spring. By pressing the telescopic rod with the hand, the slow heating and cooling mechanism is placed on the outer surface of the crucible body. Then, by releasing the telescopic rod and utilizing the reverse squeezing force of the spring, the telescopic rod extends and inserts into the limiting block for fixing. Subsequently, the slow heating and cooling mechanism is disassembled in the reverse order of installation, which facilitates the disassembly and replacement of the slow heating and cooling mechanism, avoids the trouble of repairing the entire crucible body later, and reduces maintenance costs during long-term use. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a split perspective view of the slow heating and cooling mechanism of this utility model.

[0024] Figure 3 This is a three-dimensional view of the disassembly and fixing mechanism of this utility model.

[0025] Figure 4 This is a three-dimensional view of the crucible body of this utility model.

[0026] In the diagram: 1. Crucible body; 2. Slow heating and cooling mechanism; 201. Ceramic fiber; 202. Perlite; 203. Alumina silicate fiber; 3. Connecting block; 4. Disassembly and fixing mechanism; 401. Insert rod; 402. Telescopic rod; 403. Spring; 5. Crucible edge; 6. Limiting block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integrated connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" means two or more, unless otherwise explicitly specified.

[0031] Example 1

[0032] Please see Figure 1-4 As shown, this utility model provides a novel crucible technology solution for synthesizing silicon carbide powder: it includes a crucible body 1, a slow heating and cooling mechanism 2 connected to the outer surface of the crucible body 1, connecting blocks 3 fixedly connected to both sides of the slow heating and cooling mechanism 2, and a disassembly and fixing mechanism 4 fixedly connected to one end of the connecting blocks 3. The slow heating and cooling mechanism 2 includes: ceramic fiber 201 connected to the outer surface of the crucible body 1; aluminosilicate fiber 203 connected to one end of the ceramic fiber 201; and perlite 202 disposed between the ceramic fiber 201 and the aluminosilicate fiber 203. Ceramic fiber 201 can maintain its thermal insulation properties at high temperatures, reduce heat conduction, protect the surface of the crucible body 1 and the external environment from excessive high temperature effects, and has thermal shock resistance. Under conditions of drastic temperature changes, it can effectively prevent the crucible body 1 from cracking or breaking due to thermal expansion. Combined with aluminosilicate fiber 203, it can effectively isolate external temperatures to the greatest extent and ensure temperature stability inside the crucible body 1. Furthermore, the perlite 202 effectively reduces the density of ceramic fiber 201 or aluminosilicate fiber 203, preventing thermal shock from causing the crucible body 1 to crack or deform when the temperature of the crucible body 1 changes drastically, thus affecting the entire material synthesis process.

[0033] The disassembly and fixing mechanism 4 includes an insertion rod 401, which is fixedly connected to one side of the connecting block 3; a telescopic rod 402, which is welded to the top of the insertion rod 401; and a spring 403, which is connected inside the telescopic rod 402. When the telescopic rod 402 is pressed down by hand, it shrinks, allowing the slow heating and cooling mechanism 2 to be fitted onto the outer surface of the crucible body 1. Then, the telescopic rod 402 is released, and the reverse squeezing force of the spring 403 causes the telescopic rod 402 to extend and insert into the limiting block 6 for fixing. Subsequently, it is disassembled in the reverse order of installation, which facilitates the disassembly and replacement of the slow heating and cooling mechanism 2, avoiding the trouble of repairing the entire crucible body 1 later and reducing maintenance costs during long-term use.

[0034] The top of the crucible body 1 is connected to the crucible edge 5 to enhance the overall structural stability of the crucible body 1.

[0035] Limiting blocks 6 are fixedly connected to both sides of the crucible edge 5. The surface of the limiting blocks 6 is provided with limiting holes that match the telescopic rod 402 to increase the stability of the slow heating and cooling mechanism 2.

[0036] The crucible body 1 is made of silicon carbide, which has antioxidant properties and avoids reaction with oxygen at high temperatures.

[0037] Perlite 202 is a lightweight material formed by the melting and expansion of volcanic rock. It has a low thermal conductivity and reduces the density of ceramic fiber 201 or aluminosilicate fiber 203.

[0038] Both sides of the ceramic fiber 201 are provided with limiting grooves, and the inside of the limiting grooves is fixedly connected with connecting blocks 3, which are used to increase the connection stability between the slow heating and cooling mechanism 2 and the disassembly and fixing mechanism 4.

[0039] In this device, pressing the telescopic rod 402 by hand retracts it, allowing the slow heating and cooling mechanism 2 to be fitted onto the outer surface of the crucible body 1. Releasing the telescopic rod 402 utilizes the reverse compressive force of the spring 403 to extend it, causing it to insert into the limiting block 6 for fixation. Disassembly is then performed in the reverse order of installation, facilitating the removal and replacement of the slow heating and cooling mechanism 2. This avoids the hassle of later repairs to the entire crucible body 1, reducing long-term maintenance costs.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel crucible for synthesizing silicon carbide powder, comprising a crucible body (1), characterized in that: The outer surface of the crucible body (1) is connected to a slow heating and cooling mechanism (2). Connecting blocks (3) are fixedly connected to both sides of the slow heating and cooling mechanism (2). A disassembly and fixing mechanism (4) is fixedly connected to one end of each connecting block (3). The slow heating and cooling mechanism (2) includes: Ceramic fiber (201) is attached to the outer surface of the crucible body (1); Alumina silicate fiber (203), wherein the alumina silicate fiber (203) is connected to one end of ceramic fiber (201); Perlite (202), wherein the perlite (202) is disposed between ceramic fibers (201) and aluminosilicate fibers (203).

2. The novel crucible for synthesizing silicon carbide powder according to claim 1, characterized in that: The disassembly and fixing mechanism (4) includes: Insert rod (401), the insert rod (401) is fixedly connected to one side of the connecting block (3); Telescopic rod (402), said telescopic rod (402) is welded to the top of the insert rod (401); A spring (403) is connected inside the telescopic rod (402).

3. The novel crucible for synthesizing silicon carbide powder according to claim 1, characterized in that: The top of the crucible body (1) is connected to the crucible edge (5) to enhance the overall structural stability of the crucible body (1).

4. The novel crucible for synthesizing silicon carbide powder according to claim 3, characterized in that: Limiting blocks (6) are fixedly connected to both sides of the crucible edge (5). The surface of the limiting block (6) is provided with limiting holes that match the telescopic rod (402) to increase the stability of the slow heating and cooling mechanism (2).

5. The novel crucible for synthesizing silicon carbide powder according to claim 1, characterized in that: The crucible body (1) is made of silicon carbide, which has antioxidant properties and avoids reaction with oxygen at high temperatures.

6. The novel crucible for synthesizing silicon carbide powder according to claim 1, characterized in that: The perlite (202) is a lightweight material formed by the melting and expansion of volcanic rock, and has a low thermal conductivity, which reduces the density of ceramic fiber (201) or aluminosilicate fiber (203).

7. The novel crucible for synthesizing silicon carbide powder according to claim 1, characterized in that: Both sides of the ceramic fiber (201) are provided with limiting grooves, and a connecting block (3) is fixedly connected inside the limiting groove to increase the connection stability between the slow heating and cooling mechanism (2) and the disassembly and fixing mechanism (4).

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