| Lead Oxide as a Sintering Aid for Liquid Phase
Sintering of Lead Magnesium Niobate |
DIP!KA SAHA, A. SEN AND H. s. MAlTI
Pages : 95-99
DOI : 10.1080/0371750X.1998.10804842 |
| Abstract |
| It is known that sintering of pure lead magnesium niobate ( desig·
nated PMN) powder requires relatively high temperature
(>1100°C) and the latter necessitates the use of costly high palla·
dium based electrode for multilayer capacitors. Here, we have
shown that PMN can be rapidly sintered at 900°C (30 min soaking)
by using 2-3 wt% excess PbO. However, appreciable
densification by the aforesaid method is only possible when the
particle (aggregate) size of the PMN powder is quite large (~ 15
~m). Possible reasons for such behaviour have been delineated. |
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