초록 ▼

Silicon carbide is produced by a method which includes dispersing silica in a residual oil, carbonizing the oil at elevated temperatures, and heating the carbonized dispersion to form silicon carbide. Preferably, the silica is an amorphous type. Preferred residual oils are produced by distilling awa

Silicon carbide is produced by a method which includes dispersing silica in a residual oil, carbonizing the oil at elevated temperatures, and heating the carbonized dispersion to form silicon carbide. Preferably, the silica is an amorphous type. Preferred residual oils are produced by distilling away crude petroleum components at temperatures up to about 350°C. The silicon carbide product typically contains a mixture of powder and whisker configurations, and has many particles with a dimension less than about 1 micrometer.

대표청구항 ▼

A dispersion of silica particles in carbon having a surface area greater than 50 m2/gram produced by the process comprising: (a) mixing a source of carbon selected from the group consisting of residual oils and crude petroleum with a source of silica; and (b) heating said mixture of said silica sour

A dispersion of silica particles in carbon having a surface area greater than 50 m2/gram produced by the process comprising: (a) mixing a source of carbon selected from the group consisting of residual oils and crude petroleum with a source of silica; and (b) heating said mixture of said silica source and said carbon source in a substantially nonoxidizing atmosphere at temperatures sufficient to carbonize the carbon source and thereby form said dispersion of silica particles in carbon.