Indian Journal of Engineering & Materials Sciences

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Alternative system to measure hydrogen content in molten aluminium using an electrochemical sensor


Affiliations
1 Department of Materials, Faculty of Mechanical and Engineering, University Autonomous of Nuevo Leon, San Nicolas de los Garza, Nuevo Leon 66450,, Mexico
2 Research Department, CINVESTAV-Queretaro, Libramiento Norponiente No 2000. Fracc. Real de Juriquilla, 76230, Queretaro,Qro, Mexico
3 Research Department, CIATEQ A.C., Av. del Retablo 150, col. Constituyentes Fovissste, Querétaro 76150, Mexico
4 Department of Metallurgy, Faculty of Chemistry, National Autonomous University of Mexico, Mexico City 04510, Mexico
5 Robotics and Advanced Manufacturing, CIVESTAV–Saltillo, Ramos Arizpe Coahuila 25900, Mexico

The most reliable techniques for the direct measurement of hydrogen content in liquid aluminium are based on Sievert’s law or use electrochemical probes introduced directly in liquid aluminium. The main drawback of these methods is the high cost of the equipment. An alternative apparatus has been developed and tested. This equipment combines a widely used and much cheaper hydrogen electrochemical sensor with the procedure already patented and commonly used by gas recirculation techniques. The device has been constructed and calibrated using gaseous mixtures of known hydrogen content. For validation, the results obtained with this apparatus have been compared with hydrogen content measurements in liquid aluminium using the commercial Alscan equipment in an industrial facility. Experimental results suggest that the apparatus proposed in this work is capable of detecting hydrogen content in liquid aluminium obtaining measurements that are in a good agreement with those obtained using the commercial Alscan equipment. On the other hand, results also suggest that it is important to take into account the operating atmospheric pressure to correct the readings obtained from Alscan when operating at atmospheric pressure levels far from 1 atm.
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  • Alternative system to measure hydrogen content in molten aluminium using an electrochemical sensor

Abstract Views: 134  | 

Authors

Arturo Juarez-Hernandez
Department of Materials, Faculty of Mechanical and Engineering, University Autonomous of Nuevo Leon, San Nicolas de los Garza, Nuevo Leon 66450,, Mexico
Gerardo Trapaga-Martinez
Research Department, CINVESTAV-Queretaro, Libramiento Norponiente No 2000. Fracc. Real de Juriquilla, 76230, Queretaro,Qro, Mexico
Jose Luis Camacho-Martinez
Research Department, CIATEQ A.C., Av. del Retablo 150, col. Constituyentes Fovissste, Querétaro 76150, Mexico
Carlos Gonzalez-Rivera
Department of Metallurgy, Faculty of Chemistry, National Autonomous University of Mexico, Mexico City 04510, Mexico
Ismael Lopez Juarez
Robotics and Advanced Manufacturing, CIVESTAV–Saltillo, Ramos Arizpe Coahuila 25900, Mexico

Abstract


The most reliable techniques for the direct measurement of hydrogen content in liquid aluminium are based on Sievert’s law or use electrochemical probes introduced directly in liquid aluminium. The main drawback of these methods is the high cost of the equipment. An alternative apparatus has been developed and tested. This equipment combines a widely used and much cheaper hydrogen electrochemical sensor with the procedure already patented and commonly used by gas recirculation techniques. The device has been constructed and calibrated using gaseous mixtures of known hydrogen content. For validation, the results obtained with this apparatus have been compared with hydrogen content measurements in liquid aluminium using the commercial Alscan equipment in an industrial facility. Experimental results suggest that the apparatus proposed in this work is capable of detecting hydrogen content in liquid aluminium obtaining measurements that are in a good agreement with those obtained using the commercial Alscan equipment. On the other hand, results also suggest that it is important to take into account the operating atmospheric pressure to correct the readings obtained from Alscan when operating at atmospheric pressure levels far from 1 atm.