a1 Chemistry and Materials Science Department, Lawrence Livermore National Laboratory, Livermore, California 94550
We present experimental measurements of the accessible pore fraction in ceramic matrix composites during consolidation by vapor phase infiltration. For two topologically distinct filament architectures, the accessible pore fraction decreased during consolidation with a power law decay and a critical scaling exponent of 0.41 (R2 = 0.97). A three-dimensional analysis of the percolating pores revealed that the structures became topologically equivalent and simply connected near the critical density.
(Received August 01 1996)
(Accepted November 12 1996)
c1 Address all correspondence to this author.