Research Article

Increasing Bending Strength of Porcelain Stoneware via Pseudoboehmite Additions

Figure 5

SEM micrographs porcelain stoneware fracture surfaces. (a) A crack stops at a spot of high mullite concentration. (b) Intergranular crack propagates among primary nanometric mullite (2/3 Al203/Si02) crystals.
270689.fig.005a
(a)
270689.fig.005b
(b)