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On the sintering kinetics of titania doped ceramic lanthanum chromite

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Abstract

The sintering behaviour of lanthanum chromite with the addition of 1 to 3 wt% TiO2 was studied. Densification was examined as a function of sintering temperature and TiO2 concentration. The results showed that pure LaCrO3 could not be densified to >75% of the theoretical density, while the densities exceeding 90% of the theoretical were achieved with 3 wt% titania addition at 1600° C.

Metallographic study reveals a normal grain growth following the rate equationD 2−D 20 =kt. Activation energies both for densification and grain growth have been estimated to be ≈ (80±5) k cal/mole in case of 3 wt% TiO2 addition.

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Authors and Affiliations

  1. Division of Materials, National Physical Laboratory, 110 012, New Delhi, India

    K P Bansal, S Kumari, B K Das & G C Jain

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  1. K P Bansal
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  2. S Kumari
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  3. B K Das
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  4. G C Jain
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Bansal, K.P., Kumari, S., Das, B.K. et al. On the sintering kinetics of titania doped ceramic lanthanum chromite. Bull. Mater. Sci. 3, 435–442 (1981). https://doi.org/10.1007/BF02819028

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  • DOI: https://doi.org/10.1007/BF02819028

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