silicon carbide

详情

description: 　　Green Silicon Carbide is produced in an electric resistance furnace from quartz sand, petroleum coke and salt at high temperature. It?s semi-transparent in green color with friability, high purity and high hardness. It?s suited for grinding hard, brittle and non-metallic such as cemented carbides, optical glass, ceramics, etc. Chemical & Physical Properties Crystal Form Alpha SiC hexagonal system Chemical nature Slight acid Reaction with acids Very slight surface action with hydrofluoric acid Reaction with Alkalis Attacked at high temperature by alkalis and iron oxide Oxidation-reduction effects Starts to oxide slowly at **0?C. No reduction True Density (g/cm3) 3.*0 Hardness Knoop (kg/cm2) ********0 Moh?s 9.5 Color Green Color after firing Green Decomposition point ***0oC Max Usable temperature ***0oC in air Specific heat (cal/xxxxx ) 0oC **0oC ***0oC 0.*4 0.*8 0.*3 Coefficient of thermal conductivity (cal/xxxxx ) **0oC **0oC ***0oC 0.**0 0.**1 0.**1 Electrical resistivity(Wcm) *5oC **0oC **0oC **0oC ***0oC *0 *6.4 *6.6 7.8 0.*5 Coefficient of liner expansion (x***6) *5oC ***0oC *5oC ****0oC *5oC ****0oC *5oC****0oC *5oC****0oC 4.*3 5.*2 5.*8 5.*7 5.*4 Chemical Composition (% by weight) Grit *0# - *0# **0# - **0# **0# - **0# **0# - **0# **0# ***0# **0# - ***0# SiC *9.0 min *8.0 min *7.5 min *7.0 min *5.5 min *4.0 min xxxxx 0.*0 max 0.*5 max 0.*5 max 0.*0 max 0.*0 max 0.*0 max Fe2O3 0.*0 max 0.*0 max 0.*0 max 0.*0 max 0.*0 max 0.*0 max Magnetic Material Content (% by weight) Grit Magnetic material Content *6#**0# <0.***0 *6#**0# <0.***0 *0#***0# <0.***0 **0#***0# <0.***0 Available Sizes 　 **-F**0, F*******0,W**-W5,JIS***-JIS***0. Tony.zhao at ftong dot com dot cn ; friend_tony at hotmail dot com