Volume 8, Issue 1 (January)

Articles in this Issue

4 articles
1
Research Article

Quantitative Evaluation of Carbon-Enriched Stabilised Austenite in Cast Austempered Ductile Iron of Varying Section Thickness

Olawale John Oluyemi*, Ibitoye Simeon Ademola, Oluwasegun Kunle Michael.

The quantity of carbon-enriched stabilised austenite (γHC) in austempered ductile iron (ADI) with various casting  thicknesses was evaluated in this study. Ductile iron grade that conforms to ASTM A536 65-45-12 was cast,  specimens of section thickness in the range of 5 to 25 mm were machined, isothermally treated to 820°C austenitising  temperature, and austempered at austempering temperature (T ...

Jun, 2018 pp. 1-9
2
Research Article

Dissolution Potential of a Nigerian Complex Covellite Ore by Ammonia-Ammonium Chloride Solution

Balogun Ayo F.*, Alafara A. Baba, Abdulkareem Aishat Y., Raji Mustapha A., Olasinde Fausat T., Muhammed Muhammed O., Folahan A. Adekola

With continuous industrial demands and as the market potential of purified copper in Nigeria and around the world  is on the increase, the development of  cheap and eco-friendly methods for the processing of mixed and lower  grade copper ores become paramount. Consequently, this study examines the effect of ammonia-ammonium  chloride concentration, temperature and particle size on the extent of co...

Jun, 2018 pp. 10-15
3
Research Article

Synergistic Effect of Natural and Synthetic Polymers as Drag Reducing Agents in Single Phase Water Flow

Gimba Mohammad M.*, EDOMWONYI-OTU L C, Abubakar Abdulraheem, Nurudeen Yusuf.

One of the most power consuming applications in the process and petroleum industry is the turbulent means of  transporting fluid over long distances through pipelines. High pumping energy is required to overcome the  occurring frictional pressure drop. An economical approach has been reported where addition of small amount in  parts per million (ppm) of high molecular weight polymeric solution can...

Jun, 2018 pp. 16 - 22
4
Research Article

Characterization of Sulphated Cellulose Nanocrystals as Stabilizer for Magnetite Nanoparticles Synthesis with improved Magnetic Properties.

Omorogbe Stanley O.*, Ikhuoria Esther U., Igiehon Lauretta I., Agbonlahor Osazuwa G., Ifijen Hilary I., Aigbodion Aireguamen I.

This work reports on hydrogen bond energy of sulphated cellulose nanocrystals (CNC) obtained from rubber  wood (RW) cellulose for effective steric stabilization of magnetite nanoparticles obtained via the modified  Massart's method. The particles morphology, structure and crystallite properties were investigated by using  microscopic techniques. The magnetic properties of Fe O nanoparticles were i...

Jun, 2018 pp. 23-31
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