from the conferences organized by TANGER Ltd. provisional website
The high silicon cast iron is a very attractive material because of its corrosion and abrasion resistance and also the ability to work at high temperature. The additional advantage of this material is the low production cost. Unfortunately, the material, despite the attractive properties, makes considerable inconveniences during the manufacturing process [1, 2]. The applications, these days, are limited to corrosion resistance. It has for example a high resistance for sulphuric acid. But also as electrode for cathodic corrosion resistance, it is still very popular . This material is back slowly for industrial applications but still missing detailed knowledge, for example about the influence of technological parameters on the quality of the alloy, etc. In this paper the research results of crystallization process of alloyed cast iron with high silicon content were presented. Two alloys with a silicon content at 17 and 19% were chosen to research. The results of crystallization process were based on thermal derivative analysis TDA [4, 5]. Using the recorded data a derivative of the temperature variation was calculated, what allowed to determine the characteristic points of the crystallization process. The results made possible to identify the phase transitions in the studied alloys and to describe phases that were shown during the metallographic examination.Keywords: silicon cast iron, crystallization, thermal derivative analysis, intermetallic phases
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