Abstract
Thermal analysis was done to determine the temperatures of thermal reactions, phase transformations or melting reaction during continuous heating. These reactions are a direct response to the steel composition and to the sintering atmosphere. Simultaneous thermal analysis TG-DTA (STA) shows up the sintering behaviour of sintered low prealloyed chromium steels and their peculiarities. Given the high oxygen affinity of chromium, graphite additions can modify their thermal reactions, and hence the sintering behaviour of the steel. Evidence is given of the effect of carbon on the sintering process and the nature of the oxides.
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