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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1132Carbonitriding “Pack Cyaniding” of Ductile Irons

Carbonitriding “Pack Cyaniding” of Ductile Irons

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Abstract:

In this paper, ductile iron was produced using a rotary furnace. The microstructures of the ductile iron (with and without cyanided coatings) were then characterized using optical microscopy, scanning electron microscopy (SEM) and energy diffraction X-ray spectroscopy (EDS). The surfaces of the ductile iron were then subjected to high temperature carbonitriding using a pack cementation process in which carbon and nitrogen were diffused into the ductile iron from powder mixtures consisting of ground cassava leaves and barium carbonate (BaCO₃) energizers. The wear behavior of the coated and uncoated ductile iron was studied using the pin-on-disk method. The wear mechanisms were also elucidated using a combination of SEM and EDS. The mechanisms of wear were also studied using nanoscratch experiments. The resulting wear rates are then compared with those from micron-scale wear tracks obtained from pin-on-disk experiments. The implications of the results are then discussed for the design of wear resistant ductile irons.

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Periodical:

Advanced Materials Research (Volume 1132)

Pages:

330-348

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1132.330

Citation:

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Online since:

December 2015

Authors:

E.K. Ampaw, E.K. Arthur, O.O. Adewoye, A.R. Adetunji, S.O.O. Olusunle, Winston O. Soboyejo

Keywords:

Carbonitriding, Ductile Iron, Nanowear, Pack Cementation, Sliding Wear Behavior, Wear Volume

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