How is the conductivity of black silicon carbide?
Black silicon carbide, with the chemical formula SiC, is made of quartz sand, petroleum coke (or coal coke), sawdust and other raw materials through high-temperature smelting in a resistance furnace. It has high strength, high hardness, wear resistance, corrosion resistance, oxidation resistance, high thermal conductivity, good high-temperature stability, corrosion resistance, etc.
Chemical composition of black silicon carbide
SiC≥98.0%
Fe2O3≤0.4%
C≤0.15%
Physical properties
Melting point (℃): 2250
Using temperature (℃): 1900
Specific gravity: 3.20g/cm3
Mohs hardness: 9.2
The conductivity of black silicon carbide is characterized by the following characteristics:
Semiconductor properties and conductivity
Black silicon carbide is a semiconductor material with certain conductivity, but its conductivity is weaker than that of green silicon carbide. At room temperature, its conductivity is lower than that of ordinary metal materials, but better than that of insulators.
High-temperature conductivity enhancement
As the temperature rises, the conductivity of black silicon carbide increases significantly. When the temperature reaches 2000℃, its conductivity is close to that of graphite, showing conductor-like properties.
Application scenarios
Due to its electrical and thermal conductivity, black silicon carbide can be used in electronic packaging materials, high-frequency electromagnetic shielding and other fields to meet the needs of stable electrical conductivity in high-temperature environments. In addition, its electrical conductivity also has an indirect effect in the application of abrasives and refractory materials, such as optimizing material processing performance through electrical conductivity characteristics.
Zhengzhou Haixu Abrasive Co., Ltd., as a major black silicon carbide manufacturer, has the following conventional production models:
JIS #14#16 #20 #24 #30 #36 #46 #54 #60 #70 #80 #90 #100 #120 #150 #180 #220 #240 #280 #320 #360 #400# #500 #600 #700 #800 #1000 #1200 #1500 #2000 #2500 #3000 #4000
FEPA F14 F16 F20 F22 F24 F30 F36 F46 F54 F60 F70 F80 F90 F100 F150 F180 F220 F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200
P12 P16 P20 P24 P30 P36 P40 P50 P60 P80 P100 P120 P150 P180 P220 P240 P280 P320 P360 P400 P500 P600 P800 P1000 P1200 P1500 P2000 P2500 P3000 P4000 P5000