Title :
Optical Sensor for Steel Corrosion Monitoring Based on Etched Fiber Bragg Grating Sputtered With Iron Film
Author :
Ning Zhang ; Wei Chen ; Xing Zheng ; Wenbin Hu ; Min Gao
Author_Institution :
State Key Lab. of Silicate Mater. for Archit., Wuhan Univ. of Technol., Wuhan, China
Abstract :
An optical sensor for steel corrosion monitoring based on etched fiber Bragg grating (FBG) sputtered with iron film is developed. The sensor is fabricated by magnetron sputtering an iron film on an etched FBG, and tested in sodium chloride solution. The chemical composition, structure, and morphology of film are investigated by energy dispersive X-ray analysis, X-ray diffraction, scanning electron microscope, and so on. The central wavelength shift and peak power of the FBG are analyzed with a spectral meter. The experimental results show that the wavelength shift and spectral chirp are related to the corrosion of iron film, and the sensor is able to monitor the status of iron in the corrosion process.
Keywords :
Bragg gratings; X-ray chemical analysis; X-ray diffraction; corrosion; fibre optic sensors; iron; metallic thin films; scanning electron microscopy; sputter deposition; steel; Fe; X-ray diffraction; central wavelength shift; chemical composition; energy dispersive X-ray analysis; etched fiber Bragg grating; iron film; magnetron sputtering; morphology; optical sensor; peak power; scanning electron microscope; sodium chloride solution; spectral meter; steel corrosion monitoring; structure; Bragg gratings; Corrosion; Films; Iron; Optical fiber sensors; Steel; Fiber optics sensors; Metal; Thin films; fiber Bragg gratings; metals; thin films;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2015.2393559
