Ruthenium oxide ion selective thin-film electrodes for engine oil acidity monitoring

Document Type

Journal Article

Publisher

Institute of Physics Publishing

School

Electron Science Research Institute

RAS ID

19414

Funders

ECU, Edith Cowan University

Comments

Maurya, D.K., Sardarinejad, A., Alameh, K. (2015). Ruthenium oxide ion selective thin-film electrodes for engine oil acidity monitoring. Measurement Science and Technology, 26(6). Available here.

Abstract

We demonstrate the concept of a low-cost, rugged, miniaturized ion selective electrode (ISE) comprising a thin film RuO2 on platinum sensing electrode deposited using RF magnetron sputtered in conjunction with an integrated Ag/AgCl and Ag reference electrodes for engine oil acidity monitoring. Model oil samples are produced by adding nitric acid into fresh fully synthetic engine oil and used for sensor evaluation. Experimental results show a linear potential-versus-acid-concentration response for nitric acid concentration between 0 (fresh oil) to 400 ppm, which demonstrate the accuracy of the RuO2 sensor in real-time operation, making it attractive for use in cars and industrial engines.

DOI

10.1088/0957-0233/26/6/065102

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