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Physical and chemical specifications of high purity graphite materials.

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Physical and chemical specifications of high purity graphite materials.

Date:2019-05-09 Author: Click:

Physical and chemical specifications of high purity graphite materials:


High purity graphite is an ideal inorganic non-metallic material because of its high strength, good thermal shock resistance, high temperature resistance, oxidation resistance, low resistance coefficient, corrosion resistance and easy precision machining. It is used for processing and manufacturing electric heating elements, structural casting mould, crucible boat for smelting high purity metal, heater for single crystal furnace, graphite for EDM, sintering mould, electron tube anode, metal coating, graphite crucible for semiconductor technology, emission electron tube, thyratron and graphite anode for mercury arc rectifier, etc.


The types and specifications of high purity graphite and various physical and chemical testing indicators are various, including:


1. The measurement of machined quality is mainly the measurement of dimension accuracy and surface roughness.


2. Chemical composition analysis, composition and element analysis, according to the different products, analysis of sulfur, phosphorus, barium, nickel, titanium and other trace elements.


3. Measurement of general physical properties, including bulk density, true density, porosity (apparent porosity, true porosity), pore distribution and pore size distribution.


4. Structural analysis mainly includes metallographic microscopy, X-ray diffraction, electron microscopy and graphitization.


5. Mechanical properties are tested, including compression, bending, tension, modulus of elasticity and hardness. In addition, the determination of friction coefficient and wear rate is also included.


6. Thermal performance testing mainly includes heat capacity, thermal conductivity, linear expansion coefficient, oxidation degree, thermal creep, heat shock resistance and so on.


7. Electromagnetic performance testing mainly includes resistivity, susceptibility, Hall coefficient, magnetoresistance and so on. 8. Nuclear radiation performance testing, it has the detection of neutron capture cross-section area, nuclear radiation damage and so on.


Which is a good high purity graphite enterprise? Heilongjiang Huasheng Graphite Co., Ltd.

High Purity Graphite Enterprise

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