As the applied pressures to 4D c/c composites increased form 100bar to 900bar, the densification ratio was greatly improved. The effect of pressure affects ablative property as well as morphology. The microstructure of c/c composites were examined to ...
As the applied pressures to 4D c/c composites increased form 100bar to 900bar, the densification ratio was greatly improved. The effect of pressure affects ablative property as well as morphology. The microstructure of c/c composites were examined to determine the influence of pressure on the densification, where coal tar pitch impregnated to the 4D weaving preforms by applying the different pressures of 100 and 900bar, respectively.