Felix Ugah Idu

Akanu Ibiam Federal Polytechnic, Unwana · Ceramics & Glass Technology

Development of high temperature dense refractory bricks using clay minerals and grog has been carried out with a view to determining the consequence of variation in percentages of Al2O3.2SiO2.2H2O and grog on the properties of locally produced dense bricks. The raw materials were used to compose five batches (of five samples each) from all the clay...

The development of artificial bone using alumina and Nsu clay was carried out in order to determine the effect of Al 2 O 3 .2SiO 2 .2H 2 O on the properties of locally developed Al 2 O 3-based artificial bone. The raw materials were used to formulate seven samples (A-G) and shaped using casting method. The physical properties investigated after sin...

La2Ti2-xNbxO7 (x = 0.00, 0.05, 0.10, 0.15, 0.20, 0.25) powders were synthesised via solid state reaction method, followed by sintering at 1673 K in a reducing atmosphere of 5% H2/N2 gas. The crystal structure, microstructure and thermoelectric (TE) properties of the pure and Nb-doped La2Ti2O7 ceramics were investigated. All compositions were single...

This work reviews the concept of drilling mud corrosion by highlighting the major corrosion types associated with drilling operations, mechanisms and control measures. Fatigue stress failures (stress corrosion fatigue and Sulphide stress cracking) were explained while some processes that could increase the susceptibility to fatigue stress failure a...

The effect of various combustible materials on insulating properties of refractory bricks produced from Enugu fire clay and Ekebedi clay has been studied. This is aimed at determining the most favourable combustible material for different composition(s). The clays with combustible materials were used to compose different samples labeled A-G with va...

La 2 Ti 2 − x Nb x O 7 (x = 0.00, 0.05, 0.10, 0.15, 0.20, 0.25) powders were synthesised via solid state reaction method, followed by sintering at 1673 K in a reducing atmosphere of 5% H2/N2 gas. The crystal structure, microstructure and thermoelectric (TE) properties of the pure and Nb-doped La 2 Ti 2 O 7 ceramics were investigated. All compositio...

Since the beginning of the twentieth century, energy crisis and environmental burden such as global warming, high cost, limitations of energy resources etc. have become of utmost concern especially to environmentalists, energy experts and global actors. This therefore, has led to intensive alternative energy research in novel and environmental frie...

The doping of Barium Titanate (BT) with yttrium (Y3+) on the (A+B)-joint known as self-compensation doping, SCD (Ba1-xTi1-xY2xO3; 0.05 ≤ x ≤ 0.10) and on the B-joint, BJ referred to as acceptor doping mechanism (BaTi1-xYxO3-x/2; 0.05 ≤ x ≤ 0.10) for Multilayer Ceramic Capacitors (MLCCs) applications was studied using conventional solid-state proces...

A self-compensation (SC) doping mechanism was used to study the dielectric properties (permittivity and dielectric loss) of Barium Titanate perovskite ceramics (BTPC) with the view of improving these important properties for application in Multi-layer ceramic capacitors (MLCCs). Conventional solid state sintering (SSS) also known as “shake-and-bake...

This paper reports the viability of developing Zn-27Al alloy matrix hybrid composites reinforced with alumina, graphite and fly ash (solid waste bye product of coal in thermal power plants). This research work was aimed at developing low cost-high performance Zn-27Al matrix composite with low density. Alumina particulates (Al 2 O 3), graphite added...

This paper discusses the hindrances facing local design and manufacture of Ceramic technology equipment/machines/products resulting from Research and Development (R&D) work and prospects in Nigeria. The problems facing Ceramic machine parts design and technology research and its interrelationship/linkages among tertiary institutions, research insti...