Application of optical reflectometer for monitoring corrosion process

In this work, a corrosion sensor based on an optical time domain reflectometer was presented. The first with bare tip used to measure the process of silica glass fiber. Another deposited silver layer for monitoring in nitric acid. both cases, reflectance at end fiber decreasing immersion time. Thus we can describe stage by level fresnel reflectance. maximum sensitivities analyzed sensors were as follows: 0.7dB/min (3% HF solution) 0.15dB/h (5%HNO3 Results showed that all cases wasn’t fully linear, and reactions began almost instantly after immersing tested corrosive environments. Full Text: PDF ReferencesC. Elosua, F.J. Arregui et al., "Micro Nanostructured Materials Development Optical Fibre Sensors", Sensors, 17, 2312 (2017). CrossRef B.H. Lee, Y.H. Kim "Interferometric Fiber Optic 12, 2467 (2012). X. Wang, O.S. Wolfbeis, "Fiber-Optic Chemical Sensors Biosensors" (2013-2015), Analytical Chemistry, 88, 203 (2016). M.A. Butler, "Fiber Sensor Hydrogen Concentrations near Explosive Limit", J. Electrochem. Soc., 138, 46 (1991). "Optical hydrogen sensor", Appl. Phys. Lett. 45, 1007 (1984). S.F. Silva, L. Coelho "A Reviev Palladium-Based Fiber-Optic Molecular Detection", IEEE Sens. J., 93 C. Floridia, F.C. Salgado "Methane leak detection spectral analysis using only reflectrometry semidistributed remote sensors", Sens., 2016. J.F. Martins-Filho, E. Fontana Fiber-optic-based Corrosion OTDR, SENSORS 2007 Conference (2007). E.A. Lima, A.C. Bruno, "Improving Flaws Steel Pipes Using SQUID Planar Gradiometers", Trans. Supercond. 11, 1299 (2001). Yin, Pineda de Gyvez "Real-Time Signature Detection Underground Casing Pipes", Instrumentation Measurement Technology (1996). H. Park, D. "HF etched substrated improved thin-film solar cells", Heliyon, 4, 10, (2018). M. Mozammel, "Kinetics Silver Dissolution Nitric Acid from Ag-Au0:04-Cu0:10 Ag-Cu0:23 Scraps", Mater. Sci. Technol., 22, 696 (2006). DirectLink