On phase separation in the TiO2[sbnd]SnO2system

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Abstract
Following a procedure developed by Swanger, Gupta and Cooper (1970), a computer simulation of the kinetics of spinodal decomposition of a binary solution is compared with recent experimental results on the decomposition of the solid solution containing 0·6 mole fraction SnO2 and 0·4 mole fraction TiO2. Only one adjustable parameter, namely concentration conductivity, kTM, is required for comparison. The calculations agree approximately with the thickness measurements of the two phases over the entire time span studies, if a value of kTM = 10 −16 cm2/sec at 1000×c is chosen, suggesting that the decomposition of SnO2[sbnd]TiO2 follows a spinodal mechanism.

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