Development of an Environmentally Friendly in-situ Pack-Cyaniding Technique


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.

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K. Akinluwade, A. Adetunji, M. Adeoye, L. Umoru, P. Kalu, A. Taiwo and O. Adewoye, "Development of an Environmentally Friendly in-situ Pack-Cyaniding Technique," Journal of Minerals and Materials Characterization and Engineering, Vol. 11 No. 1, 2012, pp. 21-30. doi: 10.4236/jmmce.2012.111002.

Conflicts of Interest

The authors declare no conflicts of interest.


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