Per: Elaine Cristina Pereira (universidade estadual do norte fluminense), Arthur Ribeiro Figueiredo (Universidade Federal do Rio de Janeiro), sergio neves monteiro (Instituto Militar de Engenharia), letícia soares monteiro (UNIVERSIDADE ESTADUAL DO NORTE FLUMINENSE)
Abstract:
Carbon, galvanizedand stainless steels are common in pulp and paper mills, especially in the recovery boiler environments. The recovery environment may have some factors that can cause an acceleration in the corrosion of these metals as high pH, presence of chlorides and sulfides and oxygen dissolved and vapor condensate. Therefore, the present work has a characterization of 1020 carbon, hot and galvanized steel 304 in a recovery environment. Optical, confocal, scanning electron (SEM), X-ray diffraction (XRD) and microhardness parameters, it was not necessary to verify that the carbon and galvanized steels are uniform corrosion, and three materials of the middle oxidizing in the middle studied, the middle carbon, beyond a minimum hardness. It has already been created a resistance to corrosion with greater intensity of layer of oxide of oxide of greater resistance in relation to the others. Therefore, stainless steels are most commonly used in recovery boiler environments.