Spex mills

Fig. 1.6 Tungsten carbide and agate vials for SPEX mill...

Combustion can also be avoided through the use of diluents and through the use of process lubricants which inhibit interparticle welding. For example, Schaffer and McCormick (1989b) found that the milling of CuO and Ca in a SPEX mill resulted in a combustion reaction (CuO + Ca Cu + CaO) within 7 min. On adding anhydrous... 

With the aim of further increasing the specific surface area of perovskites, the same authors proposed a process in which an additive was used to increase the surfece area [45]. In this process, the starting oxide precursors were milled for 10-20 h, using a Spex mill, resulting in the synthesis of desired perovskite structure. The milling time in the first step depends on the material composition for... 

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