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It is attempted to produce high density, high strength and isotropic carbon solids made of meso-carbon microbeads.
This paper describes relation between processing conditions for production of carbon solids and these mechanical strength.
The meso-carbon microbeads used were Type M and Type P, these microbeads were done the molding without binder pitch under the pressures of 500-3000kg/cm² at a room temperature. The molding was heattreated at final temperature of 1000-2800°C. Density, weight loss, shrinkage and strength of the obtained carbon solids were measured. The following results were obtained.
1) Carbon solids made of Type M had larger compressive and bending strength than those from Type P which were produced under the same condition. This reason is suggested that the molding made of Type P was given about duplicate weight loss comparing with that of Type M below 1600°C.
2) Bulk density and strength of carbon solids changed with the molding pressure. These values increased with increasing of the molding pressure of 500 to 1500kg/cm², but were constant above 1500kg/cm².
3) In the molding made of Type P, the rate of heating up to 1000°C was most suitable within the range of 120 to 180°C/min.
4) Bulk density and strength of carbon solid made of Type M heat-treated at 2800°C were 1.92g/cm³ and 1700kg/cm² (compressive strength), 700kg/cm² (bending strength). From this result, it is confirmed that the isotropic carbon solids had high density and high strength were prepared from the meso-carbon microbeads.

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