Title :
Micro-sensor for monitoring oils
Author :
Marx, Brian M. ; Luke, Matthew ; Butt, Darryl P.
Author_Institution :
Dept. of Material Sci. & Eng., Boise State Univ., ID
Abstract :
An electrochemical sensor has been constructed for detecting changes in the electrical responses of oil/metal systems. The sensor was used to make electrochemical impedance spectroscopy (EIS) measurements and the impedance responses are compared as a function of oil additive. This work uses the base stock oil (no additives) as the baseline for comparison of the various additives. Of the four additives tested, only the metal deactivator additive was found to increase the impedance. The full formulation oil (containing all additives) displays the lowest impedance, indicating possible additive interaction. A basic Randle´s circuit was used to fit the impedance data. This type of fit provides information pertaining to the properties of the bulk oil and contributions due to the interactions at the oil/metal interface
Keywords :
additives; electrochemical impedance spectroscopy; electrochemical sensors; microsensors; oils; additive interaction; base stock oil; basic Randle circuit; electrical responses; electrochemical impedance spectroscopy; electrochemical sensor; metal deactivator additive; microsensor; oil additive; oil monitoring; oil/metal interface; oil/metal systems; Additives; Electrochemical impedance spectroscopy; Electrodes; Impedance measurement; Lubricants; Materials science and technology; Monitoring; Oils; Petroleum; Sensor systems;
Conference_Titel :
Microelectronics and Electron Devices, 2006. WMED '06. 2006 IEEE Workshop on
Conference_Location :
Boise, ID
Print_ISBN :
1-4244-0374-X
DOI :
10.1109/WMED.2006.1678302
