Ceramic Abstracts

Effect of flexibility of ethylene vinyl acetate and crystallization of polypropylene on the mechanical properties of i‐PP/EVA blends

“…(4), the dispersed phase appears to be analogous to pores/ voids in the metals and ceramics 39 and polymer blends/composites. 40 The pores/voids are assumed not to influence the mechanical properties of the two-phase systems owing to non-adhesion in the phase boundary.…”

FABRICATION AND CHARACTERIZATION OF HOT PRESSED Al2O3

“…Spriggs et al (2) and Passmore et al (3) noted that their most dense A1 2 0 3 specimens increased in porosity by 1 to 3% on annealing. This must clearly be.…”

“…However, as results '"'th the B, and especially BM, A12O 3 show, finer powdera often start to shrink away from the die at relatively lew temperatures so some compromises may be necessary with such materials. (The fact that inhomogeneitlec occurred in bodies that did shrink away from the die as well as in those that did not clearly shows that they are not due to die-wall friction.…”

“…Fabrication with R and BM A1 2 0 3 Trial fabrication parameters ayd results for R and BM A1 2 0 3 are shown in Table 3. BM-1 and BM-3 had clearly shrunk away from the die before pressure was applied and were not pressed back to full contact (e.g., Sample 9 of Fig.…”

“…The most extensively studied materials were Lindet A and B powders (designated A ýnd B AI 2 0 3 ), since they were most commonly used by other investigators (1)(2)(3)(4)(5)(6). Limited tests were also made on three other alumina powders, designated as R A1 2 0 3 1 BM A1 2 0 3 , § and C A1 2 0 3 ".…”