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Revista de Metalurgia
1365 Publications
collected from a compatible aggregator


  • Inteligencias artificiales y ensayos ultrasónicos para la detección de defectos

    Barrera Cardiel, Gerardo; Fabián Alvarez, María de los Angeles; Vélez Martínez, Miguel; Villaseñor, Luis (2001)
    One of the most serious problems in the quality control of welded unions is the location, identification and classification of defects. As a solution to this problem, a technique for classification, applicable to welded unions done by electric arc welding as well as by friction, is proposed; it is based on ultrasonic signals. The neuronal networks proposed are Kohonen and Multilayer Perceptron, all in a virtual instrument environment. Currently the techniques most used in this field are: radi...

    Changes in acceleration rate of chloride ions depending on climatic conditions. Influence of rain

    Corvo, F.; Arroyave, C.; Autié, M.; Minotas, J.; Balmaseda, J.; Delgado, J.; Haces, C. (2003)
    Mild steel, copper and aluminium samples were exposed outdoors in two atmospheric test stations located in Havana, Cuba and Medellín, Colombia. Two parallel group of samples were formed, one for each station. They were submitted to accelerated outdoor test by intermittent spraying of a salt solution (SCAB test) according to ISO 11474:98, receiving also the influence of the open atmosphere. The acceleration of corrosion rate of the three metals caused by the presence of chloride ions in both s...

    Morfología de la cementita en aceros arqueológicos que han sufrido incendio

    Criado-Martín, A. J.; García, L.; Cartón, M.; Criado-Portal, A. J.; Dietz, C.; Martínez, J. A. (2013)
    We present a metallographic study of archaeological artefacts of steel, had been found in different archaeological sites, which characteristic microstructures reveal that have been affected by levels of fire. Study was performed using FEG (Field Emission Gun). In the laboratory, they are reproduced structures of steels archaeological.Se presenta un estudio metalográfico de piezas arqueológicas de acero, encontradas en distintos yacimientos arqueológicos, cuyas microestructuras características...

    High temperature corrosion of metallic interconnects in solid oxide fuel cells

    Bastidas, D. M. (2006)
    Research and development has made it possible to use metallic interconnects in solid oxide fuel cells (SOFC) instead of ceramic materials. The use of metallic interconnects was formerly hindered by the high operating temperature, which made the interconnect degrade too much and too fast to be an efficient alternative. When the operating temperature was lowered, the use of metallic interconnects proved to be favourable since they are easier and cheaper to produce than ceramic interconnects. Ho...
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