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Kinetics and mechanism of anatase-to-rutile phase transformation in the presence of borosilicate glass

Published online by Cambridge University Press:  31 January 2011

Jau-Ho Jean
Affiliation:
Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan, Republic of China
Shih-Chun Lin
Affiliation:
Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan, Republic of China
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Abstract

The effects of borosilicate glass (BSG) on the kinetics and mechanism of anataseto- rutile phase transformation have been investigated. The displacive anatase-to-rutile phase transformation kinetics of TiO2 were greatly enhanced in the presence of BSG. The transformation kinetics followed the Avrami equation, and the results showed an apparent activation energy of 260–370 kJ/mol, which was close to the bond strength of Ti–O, suggesting a reaction-controlling mechanism. The values of the Avrami exponent were in the range of 1.4–2.3, which could be interpreted as two-dimensional reaction-controlled growth at zero nucleation rate. The rutile particles obtained by the phase transformation were always much larger than the starting anatase powders, which was explained by a mechanism of phase-transformation–induced particle coalescence.

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Articles
Copyright
Copyright © Materials Research Society 1999

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References

REFERENCES

1.Rao, C.N.R, Yoganarasimhan, S.R., and Faeth, P.A., Trans. Faraday Soc. 57, 504 (1961).CrossRefGoogle Scholar
2.Shannon, R.D. and Pask, J.A., J. Am. Ceram. Soc. 48, 391 (1965).CrossRefGoogle Scholar
3.Czanderna, A.W., Ramachandra, C.N., and Honig, J.M., Trans. Faraday Soc. 54, 1069 (1958).CrossRefGoogle Scholar
4.Rao, C.N.R, Can. J. Chem. 39, 498 (1961).CrossRefGoogle Scholar
5.Sullivan, W.F. and Cole, S.S., J. Am. Ceram. Soc. 42, 127 (1959).CrossRefGoogle Scholar
6.Kostic, E.M., Kiss, S.J., Boskovic, S.B., and Zec, S.P., Am. Ceram. Soc. Bull. 76, 60 (1997).Google Scholar
7.Sullivan, W.F. and Coleman, J.R., J. Inorg. Nucl. Chem. 24, 645 (1962).CrossRefGoogle Scholar
8.Rao, C.N.R, Turner, A., and Honig, J.M., J. Phys. Chem. Solids 11, 173 (1959).Google Scholar
9.Knoll, H. and Kuhnhold, U., Naturwissenschaften 44, 394 (1957).CrossRefGoogle Scholar
10.Florke, O.W., Mitt. Ver. Deut. Emailfachleute 6, 49 (1958).Google Scholar
11.Eppler, R.A., J. Am. Ceram. Soc. 70, C64 (1987).CrossRefGoogle Scholar
12.Amores, J.M.G, Escribano, V.S., and Busca, G., J. Mater. Chem. 5, 1245 (1995).CrossRefGoogle Scholar
13.Reddy, B.M., Reddy, E.P., and Mehdi, S., Mater. Chem. Phys. 36, 276 (1994).CrossRefGoogle Scholar
14.Salvado, I.M.M and Navarro, J.M.F, J. Mater. Sci. Lett. 9, 173 (1990).Google Scholar
15.Debnath, R. and Chaudhuri, J., J. Mater. Res. 7, 3348 (1992).CrossRefGoogle Scholar
16.Shannon, R.D., J. Appl. Phys. 35, 3414 (1964).CrossRefGoogle Scholar
17.Gamboa, J.A. and Pasquevich, D.M., J. Am. Ceram. Soc. 75, 2934 (1992).CrossRefGoogle Scholar
18.Shannon, R.D. and Pask, J.A., Am. Mineralogist 49, 1707 (1964).Google Scholar
19.Jean, J.H. and Lin, S.C., J. Mater. Res. 14, 1359 (1999).CrossRefGoogle Scholar
20.Gennari, F.C. and Pasquevich, D.M., J. Mater. Sci. 33, 1571 (1998).CrossRefGoogle Scholar
21.Gesehues, U., Solid State Ionics 101, 1171 (1997).CrossRefGoogle Scholar
22.Avrami, M., J. Chem. Phys. 7, 1103 (1939).CrossRefGoogle Scholar
23.Avrami, M., J. Chem. Phys. 8, 212 (1940).CrossRefGoogle Scholar
24.Avrami, M., J. Chem. Phys. 9, 177 (1941).CrossRefGoogle Scholar
25.Kingery, W.D., Bowen, H.K., and Uhlmann, D.R., Introduction to Ceramics, 2nd ed. (John Wiley and Sons, New York, 1976), p. 99.Google Scholar
26.Kumar, K.N.P, Keizer, K., Burggraaf, A.J., Okubo, T., Nagamoto, H., and Morooka, S., Nature (London) 358, 48 (1992).Google Scholar
27.Kumar, K.N.P, Keizer, K., and Burggraaf, A.J., Mater. Chem. 3, 1141 (1993).CrossRefGoogle Scholar
28.Kumar, K.N.P, Scripta Metall. Mater. 32, 873 (1995).Google Scholar