INVESTIGATING THE CASE-DEPTH AND MICROSTRUCTURE OF PACK CYANIDED LOW CARBON STEEL IN PULVERIZED CASSAVA LEAVES
Abstract
Investigations were carried out to study the microstructure and case Depth of low carbon steel in pulverized cassava leaves using pack cyaniding technique. This study was conducted to develop milder carburizing compounds that are eco-friendly and sustainable to mitigate the harmful effects of cyanide salts on the environment during deep cyaniding process. The mild steel specimens were examined for high temperature diffusion into austenite. Results obtained from the microstructural examinations of cyaniding specimens showed that depth of cases on surface of the steel components was substantially increased. Appreciable hard layer cases were formed in specimens pack cyanide at 950°C While only a thin hard layer case was formed at the outer surface of specimens pack cyanided at 550°C. In general excellent hardening properties were obtained with these cassava leaves. It appears that surface hardening of low carbon steel via pack-cyaniding from cassava leaves can be adopted as a heat treatment process for improving its wear performance without polluting the environment and at less cost.
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