Purity Graphite
Size
According to your requirements
Package
25 kg small bags into ton bags or ton bags
Features
good temperature resistance, self lubrication, conductivity, etc.
Application
Can be used in machinery, metallurgy, chemical industry, military industry, etc.
High purity graphite is also called molded graphite, which means that the carbon content of graphite is more than 99.99%, which has good electrical conductivity, high temperature resistance, oxidation resistance, low resistance coefficient, corrosion resistance, high purity, self lubrication, thermal shock resistance, isotropy, easy to be machined and so on.
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High-purity graphite powder is a kind of flake graphite with a carbon content of 99.9% or more. It has the advantages of high strength, good thermal shock resistance, high temperature resistance, small resistivity, oxidation resistance, corrosion resistance, and easy precision machining. It is chemically stable, not affected by strong acid and alkali, low iron and sulfur content, less harmful impurities, and has high temperature resistance, electrical conductivity, heat transfer, lubrication and plasticity, and can be widely used in casting, pencil, mold coating, and refractory materials , batteries, etc. With the development of modern science and technology and industry, the application field of high-purity graphite is still expanding. It plays an important role in the national economy and has become an important raw material for new composite materials in the high-tech field.
Thermal conductivity properties of high purity graphite powder
1. The thermal conductivity and electrical conductivity of high-purity graphite are very good, and its properties have surpassed those of non-metallic materials such as steel, iron, and lead. The performance characteristics of high-purity graphite are very suitable for heat conductors.
2. It shortens the dissolution time and reduces energy consumption. The thermal conductivity of high-purity graphite increases with the increase of electrical conductivity. The parameters of thermal conductivity of graphite powder are thermal conductivity and thermal conductivity. It is realized by the movement of heat conduction carrier.
3. High temperature resistance of high-purity graphite powder: Graphite has a high temperature resistance of about 2300. Even if it is burned by an ultra-high temperature arc, the weight loss is very small, and the thermal expansion coefficient is also very small. The strength of graphite increases with the increase of temperature, and at 2000°C, the strength of graphite doubles. Mainly used for processing and manufacturing electric heating elements, sintering molds, structural casting molds, EDM graphite, electron tube anodes, graphite crucibles for semiconductor technology, metal coating, emission tubes, grids, etc.
Application of high purity graphite in semiconductor materials
In the production of semiconductor devices such as monocrystalline silicon, high-purity germanium and integrated circuits, in order to prevent metal impurities from contaminating semiconductor metals, high-purity graphite is widely used in production as graphite boats, graphite heating elements, and graphite sintering molds of different sizes. Semiconductor production has become a large user of high-purity graphite today.
The production process of high-purity graphite for semiconductor material production has three methods: extrusion, cold pressing and isostatic pressing, which can be used according to the actual situation.
1. The particle size of extruded high-purity graphite is finer than that of conventional graphite electrodes, but thicker than fine-structure graphite, and can be used to produce relatively large graphite parts, such as heating elements, graphite crucibles, etc.
2. Fine-structure high-purity graphite is obtained by chemical purification of fine-structure graphite during graphitization. For graphite parts that require high processing precision, such as integrated circuit sintering molds, fine-structure high-purity graphite is used to process edges, corners, grooves, and grooves can be processed.
3. Isostatic high-purity graphite is formed by isostatic pressing process, and the quality is uniform. It is the best of the three high-purity graphites, and the price is also very expensive.
The Franli factory mainly produces high-purity graphite, expandable graphite, etc., to speed up the research and development of the technology industry and save costs.
