| Hot Isostatic Pressing of AI203-Zr02 Composites |
s. B. BHADURI, M. c. SOMANI AND R. MOHAN RAO
Pages : 1-4
DOI : 10.1080/0371750X.1988.10822872 |
| Abstract |
| This paper reports the preliminary results of fabricating Al20 3-Zr02
eomposites by Hot Isostatic Pressing (HIPing). The idea was to
produce toughened (by addition of ZrOz) and completely dense
AI20 8-Zr02 composites. 15 mol % of ultrafine unstabilized Zr02
was milled with Al20 3• The as-mixed powder was cold isostatically
pressed (CIPed), sintered at 1400°C for 1 hr and HIPed at 1450°C
for 0.5 hr. The samples reached their theoretical density values. The
results were compared to HIP diagrams described in the literature.
It could be seen that in spite of some simplifying assumptions, theoretical
predictions matched with the experimental results. Boundary
diffusion was interpreted to be the dominant mechanism. |
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