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Insulators for Heaters Silicone Carbide Ceramic
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Product: Views:171Insulators for Heaters Silicone Carbide Ceramic 
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Valid until: Long-term effective
Last updated: 2017-10-23 23:45
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Silicone Carbide Ceramic
 
Silicon carbide is composed of tetrahedra of carbon and silicon atoms with strong bonds in the crystal lattice. This series ceramics have been widely used in petroleum, chemical, automotive, mechanical and aerospace industries because of their excellent resistance to thermal shock, high temperatures, oxidation and chemical corrosion.
Properties :
Low density;
High strength;
High hardness;
High elastic modulus;
Low thermal expansion;
High thermal conductivity;
Superior chemical inertness;
Excellent thermal shock resistance; 
Isolated wave absorption performance.
 
Application:
LED-TV LCD-TV 
Notebook 
M/B(Mother board) 
Power Transistor Traic 
 Power Module 
Chip IC MOS IGBT 
Network/ADSL
 
Silicon carbide is not attacked by any acids or alkalis or molten salts up to 800°C. In air, SiC forms a protective silicon oxide coating at 1200°C and is able to be used up to 1600°C. The high thermal conductivity coupled with low thermal expansion and high strength give this material exceptional thermal shock resistant qualities. 
 
Chemical purity, resistance to chemical attack at temperature, and strength retention at high temperatures has made this material very popular as wafer tray supports and paddles in semiconductor furnaces. 
 
The electrical conduction of the material has lead to its use in resistance heating elements for electric furnaces, and as a key component in thermistors (temperature variable resistors) and in varistors (voltage variable resistors).
 
PROPERTIES TABLE
Item  Value Unit  Remark
Color Green --- Visual
Porosity  20 % CNS619
Water Absorption 15.77 % CNS619
Mohs' Hardness 5~6 N/mm2 DIN EN101-1992
Flexural Strength 47.5 Kgf/cm2 CNS12701(1990)
Resistance Insulation 10 1000VDC,1mimute
Thermal Conductivity 10 w/m-k ---
Max Use Temperature <700 ºC ---
Dielectric Withstanding Voltage 10 KV ---
Thermal Expansion Coefficient 4.13 10¯6 ---
Main Composition 90%↑ SiC ---
Size 10x10 / 20x20 / 30x30 mm

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