A kind of charcoal/charcoal crucible and its manufacturing method

Abstract

The invention discloses a charcoal / charcoal crucible, which is composed of a crucible inner layer and a crucible outer layer covered on the outer surface of the crucible inner layer. A plurality of crucible flaps are assembled, and the inner layer of the crucible and the outer layer of the crucible are both carbon / carbon composite materials; the invention also discloses a manufacturing method of the carbon / carbon crucible. All or part of the crucible inner layer of the carbon / charcoal crucible of the present invention is a split structure, which greatly improves the utilization rate of the equipment required for crucible preparation, avoids waste of raw materials, improves the production efficiency of the crucible, and reduces the crucible manufacturing cost. The outer surface of the inner layer of the crucible is covered with a rapidly prepared outer layer of the crucible as a strengthening layer, which increases the strength and mechanical properties of the crucible's circumferential structure, improves the corrosion resistance of the crucible, and prolongs the service life of the crucible; the manufacturing method of the present invention Simple and easy to implement.

Description

technical field [0001] The invention belongs to the field of composite material preparation, and in particular relates to a carbon / carbon crucible and a manufacturing method thereof. Background technique [0002] The crucible is an important part of a chemical instrument. It is a container for melting and refining metals, silicon materials, etc., as well as solid-liquid heating and reaction, and is the basis for ensuring the smooth progress of chemical reactions. Take the crucible for single crystal Czochralski as an example. Now the line width of integrated circuits has entered the nanometer era. The larger the diameter of silicon wafers, the more integrated circuits that can be engraved, and the lower the cost of chips. With the rapid increase in demand and size, the market demand for monocrystalline silicon rods is also showing a trend of rapid growth. [0003] According to different crystal growth methods, single crystal silicon can be divided into Czochralski method (...

AI Technical Summary

Problems solved by technology

However, because the crucible is completely connected by mechanical structure, the integrity of the crucible is poor, and it is easy to be eroded during use, resulting in damage to the connection structure, which will cause the parts of the crucible to fall apart and lose their effectiveness.

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