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Reviewer: The data in Figure 7 could be presented in a “dif- ferential” form (with an aid of a chain rule and a measured de- pendence). This (arguably) would be a more useful data to the modeler of gas pressure. This would also shed more light on the observed inverse peak. The peak could very well be a result of a specific gas phase reaction active at that temperature (the possibility is not discussed). One way to distinguish gas-phase from condensed phase decomposition reactions is to look at the DTA trace collected under an inert (purged) atmosphere.


Authors: The paper indicates that the inverse peak could be due to “the manner in which the previously evolved binder gas components react with one another”. The fact that con- densed phase decomposition is probably not causing the peak can be seen from the absence of any peak in the TGA curve in Fig. 3.


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International Journal of Metalcasting/Spring 2012


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