Neck/grain diameter ratio

Fig. 8. Plot of experimental values of mean neck/grain diameter ratios shown in Table II against 0. Continuous line shows predicted relationship for equal spheres.

It will, however, be evident that the assumption of a constant neck diameter is inconsistent with the evidence discussed above that the neck/grain diameter ratio varies with 0. 

In most of the sections examined in the course of the present investigation, with firing times of the order of 2 hr or more, the number of grains much smaller than the mean size has been relatively small, so it seems unlikely that the latter condition would be fulfilled (see Figs. 4 and 5). Further, the number of contacts between grains of widely different size has also been small, so that no marked lowering of the mean neck to mean grain diameter ratio would be expected. 

Comparison of Experimental and Predicted Values of the Ratio of Mean Neck Diameter to Mean Grain Diameter... 

Mix Firing treatment (deg) Mean grain diam. Mean neck diam. (/i) Ratio mean grain to mean neck diameter A = taahal ylr... 

---