Biomedical Engineering Reference
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12.3
Variations in temperature and pressure (GTM results) during
mechanosynthesis of Cu-Al/Al 2 O 3 composite powder from
Cu 2 (OH) 2 CO 3 -Al mixture: (a) beginning of mechanical treatment and
(b) final steps of mechanosynthesis (planetary ball mill Fritsch GmbH
Pulverisette 6
) (Wieczorek-Ciurowa
et al.
, 2007b).
milling the temperature increased abruptly, which confirmed the fact that
ignition had occurred. The time at which a sudden increase in temperature
occurs is referred to as the ignition time. Beyond this time, the reaction takes
place within seconds (see Fig. 12.4). The example in the figure is an
illustration of Cu-Al/Al 2 O 3 composite powder formation in the CuO-Al
system (Wieczorek-Ciurowa and Gamrat, 2007a; Wieczorek-Ciurowa et al.,
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