Development of a magnetic sensor for detection of moderate carburization damages in heat-resistant HP-Nb tubes of steam reforming furnaces

Citation data:

Journal of Materials Research and Technology, ISSN: 2238-7854, Vol: 7, Issue: 3, Page: 371-375

Publication Year:
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Juan E.C. Lopez; Mónica P. Arenas; Clara J. Pacheco; Fábio S. Queiroz; Carlos B. Eckstein; Laudemiro Nogueira; Luiz H. de Almeida; João M.A. Rebello; Gabriela R. Pereira
Elsevier BV
Materials Science
article description
Although carburization is not a typical occurrence in steam reforming furnaces, this localized damage can occur and its detection is an important issue. A magnetic sensor based in the magnetic flux density variation has been proposed for the carburization detection in samples coming from steam reformer tubes. A three-dimensional model, by finite-element method (FEM), supported the optimization and development of a magnetic sensor for the detection of carburized samples. The experimental results indicated that the developed sensor, with high sensitivity, allowed to detect regions with moderate carburization damages.