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The reactions occurring during sintering of stoichiometric BaTiO 3 with small additions of LiF were studied at temperatures between 700° and 900°C. BaTiO 3 reacts with LiF to form a cubic solid solution and Li 2 TiO 3 During sintering, the cubic solid solution coexists with Li 2 Ti0 3 and forms a liquid phase at 740°± 5°C. The occurrence of a liquid phase at this temperature results in an enhancement of the sintering process and leads to the development of a highly dense microstructure.
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Guha et al. (1986) studied this question.
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