Research Papers/Topics in Materials And Metallurgical Engineering

Effect of Cement Particle Size on the Compressive Strength and Other Physiochemical Properties of Portland Cement

ABSTRACT The effect of cement particle size of Portland cement on the properties of cement mortar and paste were investigated. This was done at a definite mix and water-cement ratio. Fresh clinkers collected from Dangote Cement Factory was ground together with 3% gypsum using disc grinder. The chemical compositions of the clinker and gypsum were determined using XRF. Five different si...

Effect of Paramagnetism on the Corrosion Abatement of Mild Steel

ABSTRACT The corrosion rates of magnetized mild steel coupons in HCl solutions were studied using the weight loss method. The coupons were magnetized with a laboratory electromagnet at 0.38T, 0.57T, 0.76T, 0.95T and 1.51T and immersed in HCl solutions of pH ranging from 2 to 6. Experimental results showed that coupons magnetized at 0.76T, 0.57T and 0.38T exhibited higher corrosion rates than their non-magnetized counterparts at pH values less than ...

Effect of Electrode Types on the Solidification Cracking Susceptibility of Austenitic Stainless Steel Weldment

ABSTRACT The effect of electrode types on the solidification cracking susceptibility of austenitic stainless steel weld metal was studied. The work also investigated the effect of electrode types on the strain hardening exponent of austenitic stainless steel welded joints. Manual metal arc welding method was used to produce the joints with the tungsten inert gas (TIG) welding serving as the control. Tensile tests and metallogra...

Inhibition of the Corrosion of Mild Steel in Acidic Environment Using Azadirachta Indica (NEEM) Leaf Extract as Inhibitor

ABSTRACT The inhibition of corrosion of mild steel by Azadirachta indica leaf extract in acidic environments of HCl and HNO3 from pH1 to pH6 has been investigated using the weight loss technique. The Azadirachta indica leaf extract is the inhibitor and the mild steel used was in the form of coupons. The investigations were carried out at ambient temperature. The optimum concentration of the extract used for the experimentation was obtained by soaki...