Ambali Ibrahim Owolabi

Lecturer at the Department of Materials and Metallurgical Engineering. University of Ilorin. Ilorin. Kwara State. Nigeria
Member of Nigeria Society of Engineering
Registered Engineer, The Council for the Regulation of Engineering in Nigeria (COREN)

EDUCATION

BSc Metallurgical and Materials Engineering, University of Lagos
MSc Metallurgical and Materials Engineering, University of Lagos
PHD Material Engineeering, Universiti Sains Malaysia

RESEARCH, TEACHING, or OTHER INTERESTS

Engineering, Metals and Alloys, Surfaces, Coatings and Films, Mechanics of Materials

Scopus Publications

Formation and Growth Kinetic of Intermetallic Layers on 304SS at Different Slurry Aluminizing Temperature and Time Using Si-Al<inf>2</inf>O<inf>3</inf>-Modified Aluminide Coating
Ibrahim Owolabi Ambali, Anasyida Abu Seman, Tuti Katrina Abdullah, and Brij Kumar Dhindaw
Springer Science and Business Media LLC



MICROSTRUCTURAL EVOLUTION AND HARDNESS PROPERTIES OF Si-MODIFIED ALUMINIDE COATING ON 304 STAINLESS STEEL VIA SLURRY ALUMINIZING: EFFECT OF ALUMINIZING TEMPERATURES




Investigation of Al2O3-Modified Aluminide on 304SS: Microstructural Evolution, Hardness and Growth Kinetic through Slurry Aluminizing
Ibrahim Owolabi Ambali, Siew Min Tan, Muhamamad Afifi Jalaluddin, Abu Seman Anasyida, Tuti Katrina Abdullah, and Brij Kumar Dhindaw
Trans Tech Publications, Ltd.
The microstructure and growth kinetic of alumina (Al2O3)-modified aluminide coating were investigated at 650°C, 680°C, and 700°C for various durations (4, 6, 8, and 10 hours) using the slurry aluminizing process. The heat-treated samples were analyzed through scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and X-ray diffraction (XRD) to assess microstructural evolution, elemental composition, and phases of the coating. SEM observations revealed a two-layer aluminide coating, comprising an Al-rich intermetallic (FeAl3) and a Fe-rich intermetallic (FeAl). Microhardness tests showed that FeAl3 had hardness values ranging from 880 to 990 HV, while FeAl, with values between 610 and 700 HV. The growth kinetics indicated that the thickness of the aluminide layers increased with both the aluminizing temperature and time, following a parabolic growth law. The activation energy for the growth of FeAl was 343.15 kJ/mol.


Potential of Cow Horn for Carbonitriding Treatment of Steel
Ismaila Idowu Ahmed, Aminat Titilayo Mohammed, Sulaiman Abdulkareem, Taiwo Yahaya, Ibrahim Owolabi Ambali, Bamidele Lawrence Bayode, and Jeleel Adekunle Adebisi
Springer Science and Business Media LLC



Development and evaluation of ceramic tiles using wastes and solid minerals
Z.U. Elakhame, Y.L. Shuaib-Babata, and I.O. Ambali
Sultan Qaboos University
This paper focuses on the need for domesticating the production of building materials like tiles to address the problem of Nigeria over dependence on imported goods, despite adequate availability of mineral resources like clay, quartz and feldspar in the country. Clay, quartz and feldspar, and milled glass were respectively obtained from Ogijo in Ogun State, Okpila in Edo State and Oshodi, Lagos State of Nigeria were characterized using ASTM C71 as a guide. Samples of the ceramic tile were produced from varying mixtures of clay, quartz, feldspar and milled glass. The chemical and physio mechanical properties of the samples were also determined. The results showed that the clay sample belong to Alumino-silicate group with 59.20% silica and 21.25% alumina. The samples’ properties met the required standards; hence, the materials were found suitable for production of ceramic tiles of acceptable standards. Though, the porosity of the sample tiles increased as thepercentage weight of the clay material in the mixture decreased the proportion of quartz, feldspar and milled glass increased. The sample containing 70% Clay and 30% Feldspar had better formulation properties than others.

RECENT SCHOLAR PUBLICATIONS

Publications

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