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Structural evolution in alumina gel

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Abstract

Thermal treatment and consequent dehydration modifies the structure of boehmite gel, which transits from a polymeric, partially disordered state to the crystalline α-alumina via several transition phases. We have investigated the evolution of the microstructure and structural order in the lattice. The significance of particle morphology is brought out in the sintered gel powder pellet. The transparency of the gel glass, despite the large porosity confirms the absence of long range order upto the δ-phase.

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References

  1. B. E. Yoldas,Amer. Ceram. Soc. Bull. 54 (1975) 289.

    Google Scholar 

  2. V. Saraswati andG. V. Ramarao,J. Mater. Sci. Lett. 5 (1986) 1095.

    Google Scholar 

  3. R. S. Alwitt, in “Oxides and oxide films”, Vol. 4, edited by J. W. Diggle and A. K. Vijh (Marcel Dekker Inc., New York, 1976) p. 170.

    Google Scholar 

  4. D. Hull, in “Materials Engineering”, edited by J. V. Bee and G. G. Garett (Pergamon Press, 1986) p.28.

  5. B. C. Lippens andJ. H. de Boer,Acta Cryst. 17 (1964) 1312.

    Google Scholar 

  6. “Powder diffraction file” (Joint Committee on Powder Diffraction Standards, Philadelphia, 1967) 4–877, 10–425.

  7. S. J. Wilson,J. Solid State Chem. 30 (1979) 257.

    Google Scholar 

  8. B. D. Cullity, “Elements of X-ray diffraction” (Addison Wesley Publications, Massachusetts, 1978) 352.

    Google Scholar 

  9. A. J. Leonard, F. Vancauwelaert andJ. J. Fripat,J. Phys. Chem. 71 (1967) 697.

    Google Scholar 

  10. H. P. Rooksby, “X-ray Identification and crystal structure of clay materials” (London, 1951) p. 264.

  11. H. Saalfeld,Clay. Miner. Bull. 3 (1958) 249.

    Google Scholar 

  12. Huez-Min Ho, Edward Goo andGareth Thomas,J. App. Phys. 59 (1986) 1606.

    Google Scholar 

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Saraswati, V., Rao, G.V.N. & Rama Rao, G.V. Structural evolution in alumina gel. J Mater Sci 22, 2529–2534 (1987). https://doi.org/10.1007/BF01082141

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  • DOI: https://doi.org/10.1007/BF01082141

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