Abstract: In this article, we investigate the effect of micro-organisms on the rate of corrosion of stainless steel and mild steel alloys. The three analytical techniques we will employ in measuring the rate of corrosion are the electrochemical impedance spectroscopy, cyclic polarization and the mass loss method. The test material used is the 316L stainless steel and the mild steel coupons. The microorganism we are going to use for this investigation is the sulphate-reducing bacteria (SRB). ...
Abstract: In this study, bimetallic nanofiller capable of usage as reinforcement was synthesized from expanded polystyrene (EPS). Bimetallic materials consist of two different metals. The bimetallic nanofiller consisting of SrO and K2O was successfully developed by the hydrothermal method which many researchers have well utilized to prepare nanoparticles in recent times. This study aims to synthesize and characterize bimetallic SrO-K2O, nanofillers from recycled expanded polystyrene (EPS). P...
Abstract: In this paper, the preparation and characterization of ZnO nanofillers from polystyrene (PS) polymer waste for use as reinforcement was presented. This was done to achieve a better means of upcycling polymer wastes that have become social menace in recent times. The PS/ZnO nanofillers was synthesized through the hydrothermal synthesis of nanocomposites in an enclosed reactor. The reactor was kept in an oven at a specified temperature for a period. A product obtained was characteriz...
Abstract: An investigation was carried out to evaluate the isothermal oxidation behavior of nickel based superalloys at 1100 °C for 120 h. The alloys which were microstructured and nanostructured were developed by spark plasma sintering system. The oxidation test was carried out at a temperature of 1100 °C in air at different exposure time up to 120 h. The nanostructured nickel based alloy possessed better oxidation resistance with the formation of continuous adherent alumina, chro...
The suitability of Owoh clay for the production of ceramics and other industrial products hasbeen successfully carried out. The chemical analysis was carried out using X-ray fluorescence(XRD) technique. Particle size analysis was conducted using electric size shakers. Otherphysical properties tested were conducted using international accepted standard. The results ofthe chemical analysis conducted showed that the clay has Al2O3 (29.04%) and SiO2 (50.60%) asits predominant oxides with Cr2O3 (0...
ABSTRACT Safety on Nigeria roads has become a thing of concern in recent times. This is as a result of numerous carnages that have characterized with Nigeria roads. This loss of lives and properties have been attributed to many factors including poor road design and defective construction practice. A road that is poorly designed, is in no doubt a threat to the safety of the road users. In this paper, therefore the way in which highway design and construction practice impacts on the safety of ...
ABSTRACT This project titled “the production of lead-acid battery” for the production of a 12v antimony battery for automobile application. The battery is used for storing electrical charges in the form of chemical energy releasing the energy as electrical energy when needed. It is a rechargeable battery that supplies electrical energy for Starting-Lighting-Ignition (SLT) system. The process involve in the procurement of the various parts viz electrodes, the lead grid panels, propylene co...
The fabrication and performance assessment of eco-friendly brake pad using palm kernel shell (PKS) wasproduced for engineering applications. The materials were ground and prepared for the production of brake pads. Some physical and mechanical properties were used to determine the capability of the produced pads in service conditions. The production and testing of motor vehicle brake pads using locally available raw material has been undertaken and accomplished. The disc brake friction lining ...
The characterization of Ezinifite clay from Anambra State, Nigeria, is presented in this research paper. The clay sample was mined and then processed to a standard form for analysis using recognized processes. SEM, XRF, and DTA/TGA were used to determine the mineralogy, chemical compositions, and thermal behavior of the clay. The clay samples' morphological, chemical, and mechanical properties were studied at temperatures ranging from 900oC to 1200oC, with a temperature interval of 100oC. The...
Epoxy nanocomposites have found their path through a wide range of applications in marine, aerospace, automotive and electronics packaging industries. However, epoxy nanocomposites have proved to be vulnerable when exposed to different corrosive environments and the role of nanocarbon in leading the extent of changes of their properties have been a subject of research in several studies. This study aims at investigating the influence environmental degradation has on the mechanical properties ...
ABSTRACT This work investigates the optical properties of glass prepared using Otamiri Silica sand mixed with analytical grade oxides as a function of their composition. Three batches were prepared with Phosphorus as the main variable of the SiO2-Na2OB2O3-CaO-ZnO glass system. The glass was melted in a ceramic crucible with a lid and the glasses melted after two hours of firing in a monolithic charcoal furnace. The effect of varying SiO2 and P2O5 on optical properties was determined using a ...
ABSTRACT Equal channel angular pressing (ECAP) has over the years been used as a severe plastic deformation method to refine the grains and improve the strength of various metals. Even though this has been largely successful, research over the years has tried to increase the amount of strain induced in the materials used during this process so as to further increase the strength. In this research, an additional 30o twist angle was incorporated into the outlet channel of one of the ECAP dies ...
ABSTRACT Electrochemical capacitors (ECs) or Super capacitors (SCs) are energy saving devices which have excellent properties that include high power density, long cycle life, low temperature sensitivity and low maintenance cost. However, these devices have lower energy densities than conventional batteries. To improve on its energy density, SnO2 which is a metal oxide was considered as an electrode material because of its chemical inertness and thermal stability. SnO2 nanoparticles were syn...
The Engineering Characterization of Agbani clay deposits has been investigated with a view of finding its usefulness in the engineering industry and home. The chemical analysis was carried out using X-ray fluorescence (XRF). Physical properties tests such as apparent density, apparent porosity, water absorption, shrinkage, modulus of rupture, bulk density, moisture content, conductivity, thermal shock resistance and specific gravity were all carried out using international accepted standa...
The Clay deposits has been investigated for its industrial potentials. The chemical analysis was determined using Atomic Absorption spectrophotometer (AAS). The physical properties conducted such as linear shrinkage, apparent density, apparent porosity, bulk density, water absorption and modulus of rupture were conducted using standard technique. The results on the chemical composition of the clay composed of Al2O3 (29.10%), SiO3 (53.04%), Na2O3 (2.15%), MgO (1.15%), Fe2O3 (1.70%), CaO ...