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Adetunji, A. R., AttahDaniel, B. E., Adeoye, M. O., Umoru, L. E, Adeyinwo, C. E., Pelemo, D. A., Olasupo, O. A. and Adewoye, O. O. (2008). “Metallographic Studies of Pack Cyanided Mild Steel Using Cassava Leaves.” Materials and Manufacturing Processes. 23(4), pp. 385-390 Ibironke, O. J., Falaiye, A., Ojumu, T. V., Odo, E. A. and Adewoye, O. O. (2004) Case-Depth

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• TITLE: Development of an Environmentally Friendly in-situ Pack-Cyaniding Technique

  AUTHORS: K. J. Akinluwade, A. R. Adetunji, M. O. Adeoye, L. E. Umoru, P. N. Kalu, A. T. Taiwo, O. O. Adewoye

  KEYWORDS: environmentally friendly, cassava leaves, scanning electron microscope, in-situ pack-cyaniding, biodegradable, clean technology

  JOURNAL NAME: Journal of Minerals and Materials Characterization and Engineering, Vol.11 No.1, January 20, 2012

  ABSTRACT: A safe and environmentally friendly cyaniding method has been developed to mitigate the toxic impacts of cyanide salts on the environment during conventional cyaniding. The method entails in-situ diffusion of nascent cyanide from mature cassava leaves into the surface of mild steel components via pack-cyaniding. Both high-temperature in-situ diffusion into austenite and low-temperature in-situ diffusion into ferrite were explored. Results from light and scanning electron microscopic studies showed that surface hardness of the steel components was substantially increased. The waste product was a harmless biodegradable organic compound that posed no disposal threats. This study is important for increasing the wear resistance of ferrous parts for a longer service life in application without polluting the environment.