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. Author manuscript; available in PMC: 2013 May 29.
Published in final edited form as: Chem Eng Sci. 2010 Oct 15;65(20):5471–5481. doi: 10.1016/j.ces.2010.07.011
α fraction of collisions leading to surface oxidation [-]
β collision frequency [m3 s−1]
δ total coating thickness [m]
δs smooth coating thickness [m]
ε coating efficiency [%]
ρSiO2 density of SiO2 [kg m−3]
ρTiO2 density of TiO2 [kg m−3]
τ characteristic sintering time [s]