| 摘要 |
<p>Amorphous carbon particles extracted from petroleum coke combustion ash, characterized in that the particles each have a non-circular section, exhibiting a weight reduction, measured after heating at a constant temperature of 500~C in the presence of air for 60 min, of less than 30% and have an average particle diameter of 50 to 1 .mu.m. There is further provide d a composite material characterized in that the amorphous carbon particles ar e mixed in a matrix of organic material or inorganic material. Thus, it become s feasible to obtain with economic efficiency amorphous carbon particles excelling in rigidity and strength and having extremely small specific surfa ce area and pore volume and to provide a composite material whose performance h as been improved by incorporation of the amorphous carbon.</p> |
