Sol-gel process chemistry
Inorganic films and protector hybrids obtained by sol-gel

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Sol-gel process chemistry
Inorganic films and protector hybrids obtained by sol-gel

Author : François-Xavier PERRIN

Review date: February 1, 2016 | Lire en français

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1. Sol-gel process chemistry

The sol-gel process is a so-called "soft chemistry" method for obtaining ceramics by simple polymerization of molecular precursors in solution [14][15]. These precursors can be inorganic salts (Al(NO3)3, for example), but are most often transition metal or silicon alkoxides of the general formula M(OR)4 with M = Si, Ti, Zr...

The formation of an oxide network from alkoxides involves the hydrolysis and condensation reactions described in figure 1.

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