Abstract
A new high (24%)-chromium alloy was experimentally manufactured by combining the particular chemical composition of various materials with the use of thermal treatments to produce pump impellers for the sugar industry. The alloy metal was tested in situ in a sugar medium and then evaluated by electrochemical measurements; the two former procedures were associated with a nontraditional method to assess the susceptibility and resistance to corrosion. Potentiostatic and atomic absorption measurements were carried out to characterize the degradation and damage morphology by scanning electron microscopy (SEM) observations. The trials proved a good performance for the new alloy in the sugar medium in spite of nonsignificant localized damages involving erosion-corrosion mechanisms and surface microcrackings of the material.
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