Specifications of High-Purity Graphite for Semiconductors

Particle size ranges from 5 to 45 microns, with carbon content between 99% and 99.995%.

Properties of high-purity graphite for semiconductors

(1)High temperature resistance: High-Purity Graphite for Semiconductors can withstand temperatures of around 2300℃, with a melting point of 3850±50℃ and a boiling point of 4250℃. When burned at high temperatures, it loses very little weight and has a low thermal expansion coefficient. What's more, its strength increases as the temperature rises – it doubles at 2000℃.

(2)Lubricity: The larger the graphite flakes, the better the friction coefficient and the more excellent the lubricating performance.

(3)Electrical and thermal conductivity: It conducts electricity 100 times better than ordinary non-metallic substances, and its thermal conductivity is higher than that of metallic materials like steel and iron. Besides, its thermal conductivity decreases as the temperature goes up, making it an excellent raw material for semiconductors.

(4)Plasticity: It has good toughness; it can be rolled into extremely thin sheets and pressed into graphite paper.

(5)Chemical stability: At room temperature, it shows good chemical stability and can resist corrosion from acids, alkalis and organic solvents.

(6)Thermal shock resistance: When used at room temperature, it can withstand drastic temperature changes without being damaged. In case of sudden temperature fluctuations, its volume changes slightly, thus preventing cracks from forming.

Applications of High-Purity Graphite for Semiconductors

(1) For electrical conductivity: Electric heating film slurry, conductive fillers, fuel cell membrane electrode additives, raw materials for fuel cell bipolar plates, conductive agents for lithium-ion batteries, stealth shielding coatings, etc.

(2)For thermal conductivity: Raw materials for nuclear fuel elements, thermal conductive coatings, raw materials for thermal conductive films, thermal conductive slurries, thermal conductive fillers, additives for thermal conductive rubber, etc.

(3) For lubrication: Solid lubricants, additives for greases and lubricating oils, rubber modification additives, corrosion-resistant sealing materials, etc.

Technical Indicators

Model & Parameter	LC-D5	LC-D10	LC-D35	LC-D45
Particle Size D50 (μm)	5	10	35	45
Specific Surface Area (m²/g)	4.78	3.56	2.38	1.15
Resistivity (Ω·m)	0.9	2.3×10⁻²	6.9×10⁻³	5.8×10⁻³
Moisture (%)	<0.2	<0.2	<0.2	<0.2
Carbon Content (%)	99.99	99.995	99.995	99.995
Ash Content (%)	<0.01	<0.01	<0.01	<0.01
Volatile Content (%)	<0.05	<0.05	<0.05	<0.05
Fe Content	<0.05	<0.05	<0.05	<0.05