
Micro-Structural Investigation of Graphite Powders 435
When examined more closely as in Figure 16, some layered regions are discern-
FIGURE 16 NSG pitch particle close-up (14k x magnification)
characteristics that are a combination of both needle coke and pitch. As expected,
when the heat treated RFL sample, PRFL, is examined in Figure 17, a structure very
similar to that of the original RFL graphite is found. ...