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

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Title Statement Alternative system to measure hydrogen content in molten aluminium using an electrochemical sensor
 
Added Entry - Uncontrolled Name Juárez Hernández, Arturo ; Department of Materials, Faculty of Mechanical and Engineering, University Autonomous of Nuevo Leon, San Nicolas de los Garza, Nuevo Leon 66450, México
Trapaga-Martinez, Gerardo ; Research Department, CINVESTAV-Queretaro, Libramiento Norponiente No 2000. Fracc. Real de Juriquilla, 76230, Queretaro, Qro., Mexico
Camacho-Martinez, Jose Luis; Research Department, CIATEQ A.C., Av. del Retablo 150, col. Constituyentes Fovissste, Querétaro 76150, México
González-Rivera, Carlos ; Department of Metallurgy, Faculty of Chemistry, National Autonomous University of Mexico, Mexico City 04510, México
Lopez Juarez, Ismael ; Robotics and Advanced Manufacturing, CIVESTAV–Saltillo, Ramos Arizpe Coahuila 25900, México
Pistones Moresa, CONACYT - Mexico
 
Uncontrolled Index Term Metallurgy engineering, casting aluminium, materials science
Degassing, Aluminium alloys, Hydrogen content, Electrochemical gas sensor, Physical pores, Solidification
 
Summary, etc. <p>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.</p>
 
Publication, Distribution, Etc. Indian Journal of Engineering and Materials Sciences (IJEMS)
2021-02-23 14:12:30
 
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http://op.niscair.res.in/index.php/IJEMS/article/view/28370
 
Data Source Entry Indian Journal of Engineering and Materials Sciences (IJEMS); ##issue.vol## 27, ##issue.no## 5 (2020): IJEMS- OCTOBER 2020
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJEMS/article/download/28370/465487631
 
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