Engr. Dr. Obayi Camillus Sunday.

Department: Metallurgical And Material Engineering
Faculty: Engineering
Designation : Senior Lecturer
Email: camillus.obayi@unn.edu.ng
Phone: +234(0)8037506514

Publications (Articles and Journals):

1. Camillus Sunday Obayi, Ranna Tolouei, Afghany Mostavan, Carlo Paternoster, Stephane Turgeon, Boniface Adeleh Okorie, Daniel Oray Obikwelu & Diego Mantovani. Effect of Grain Sizes on Mechanical Properties and Biodegradation Behavior of Pure Iron for Cardiovascular Stent Application. Biomatter (2016), 6:1, e959874, DOI :10.4161/21592527.2014.959874

2. Paul S. Nnamchi, C.S. Obayi, Iain Todd, M.W. Rainforth. Mechanical and electrochemical characterization of new Ti–Mo–Nb–Zr alloys for biomedical applications, Journal of the Mechanical Behaviour of Biomedical Materials, 60 (2016), 68-77.

3. Camillus Sunday Obayi, Ranna Tolouei, Carlo Paternoster, Stephane Turgeon, Boniface Adeleh Okorie, Daniel Oray Obikwelu, Glenn Cassar, Joseph Buhagiar, Diego Mantovani. Influence of cross-rolling on the micro-texture and biodegradation of pure iron as biodegradable materialformedicalimplants,ActaBiomaterialia17(2015)68–77. http://dx.doi.org/10.1016/j.actbio.2015.01.024.

4.  Paul S. Nnamchi, Boniface A. Okorie, Camillus S. Obayi. A New Combinatorial Approach to Property-Driven Design of Ti Alloys for Biomedical Applications. Journal of Metallurgy and Materials Engineering, Vol 10, September 2015; pp.18-32.

5.  I.C. Ezema, A.R.R. Menon and C.S. Obayi: Effect of Surface Treatment and Fiber Orientation on the Tensile and Morphological Properties of Banana Stem Fiber Reinforced Natural Rubber Composite. The Journal of Minerals and Materials Characterization and Engineering (JMMCE), 2, 216-222, 2014.  http://dx.doi.org/10.4236/jmmce.2014.23026.

6.  Chikezie W. Onyia, Boniface A. Okorie, Simeon I. Neife, Camillus S. Obayi, Structural Modification of Sand Cast Eutectic Al-Si Alloys with Sulfur/Sodium and Its Effect on Mechanical Properties. World Journal of Engineering and Technology, 1, 9-16, August, 2013. http://www.scirp.org/journal/wjet.

7.  C. S. Obayi, Ranna Tolouei, P.S. Nnamchi, N.I. Amalu, Diego Mantovani. Grain Size Distribution Effects on the Mechanical and Corrosion Behaviours of Biodegradable Metallic Biomaterials. Journal of Metallurgy and Materials Engineering, Vol 8, September, 2013; pp.1-7.

8.  R.E. Njoku, C.S. Obayi, P.S. Nnamchi, Hybrid effect on the Mechanical Properties of Sisal Fiber and E-Glass Fiber reinforced Polyester Composites, Nigerian Journal of Technology, Vol.30, No.3, pp 97-102, 2011.

9. P.S. Nnamchi, C.S. Obayi, B.A. Okorie and C.O. Nebo (2010): Effect of Extrusion and Annealing Conditions on the Elevated Temperature Microstructure and Mechanical Properties of a Melt-spun Al-8.43 Fe-1.08-1.35V Aluminium Alloy. Journal of Metallurgy and Materials Engineering, Vol 5, No.1, April 2010; pp.43-47.

10. P.S. Nnamchi, C.S.Obayi, I.A. Figueroa, Effect of Cr additions on the mechanical properties of some amorphous Fe-based melt-spun ribbons. Journal of Metallurgy & Materials Engineering, Vol.4, No.1, pp. 1-3, April, 2009.

11. C.S. Obayi, A.O. Odukwe, D.O.N. Obikwelu, Some Tensile Properties of Unsaturated Polyester Resin Reinforced with Varying Volume Fractions of Carbon Black Nanoparticles, Nigerian Journal of Technology, Vol.27 No.1, pp. 20-28, March, 2008.

12.  C.S. Obayi, D.O.N.Obikwelu, Steel Nail Manufacturing and Metallurgical Profession in Eastern Nigeria (presented at the 26th Annual Conference of Nigerian Metallurgical Society, October, 2009, held at Metallurgical Training Institute, Onitsha, Nigeria).

13. I.C. Ezema, I.U. Agbo, C.S. Obayi, A.N. Enetanya, Development of Natural Fibre Composite: The Challenges and Prospects for Sustainable Development, (presented at 2nd RMRDC International Conference on Natural Resources Development and Utilization, Abuja, Nigeria, February 9-11, 2010).

14. C.S. Obayi, B.A. Okorie, D.O.N. Obikwelu, R.E. Njoku, Diego Mantovani, Biodegradable Metals for Biomedical Applications: A Paradigm Shift In Metallic Biomaterials (presented at the 10th Annual Nigerian Materials Congress held at EMDI, Akure, Nigeria, November 21-24, 2011).

15. Camillus Sunday Obayi1, Afghany Mostavan2, Ranna Tolouei3, Stephane Turgeon4, Diego Mantovani5, Effect of Grain Sizes on Mechanical Properties and Corrosion Rates of Pure Iron for Biodegradable Stent Application (presented at the 4th International Symposium on Biodegradable Metals, Maratea, Italy, August 27th - September 1st, 2012).

16. N.I. Amalu, C.W. Onyia, C.S. Obayi, B.A. Okorie, Assessment of the Role of Steel in Industrial Development (presented at 29th Annual Conference and AGM of Nigerian Metallurgical Society (NMS) held at Ajaokuta Steel Company Ltd, Ajaokuta, Kogi State, October 30th – November 2nd, 2013).

17. Camillus Sunday Obayi, Ranna Tolouei, B.A. Okorie, D.O.N. Obikwelu, S.I. Neife, Diego Mantovani, Impact of Nanotechnology on Biodegradable Metallic Implants for Cardiovascular Application (presented at the 1st African International Conference/workshop on Applications of Nanotechnology to Energy, Health and Environment at University of Nigeria, Nsukka, Nigeria, March 23 – 29, 2014).

18. Paul S. Nnamchi, Camillus S. Obayi, Boniface A. Okorie, Theoretical Design of Ti-Mo-Zr alloy for biomedical applications. (Presented at the 13th Annual Nigerian Materials Congress held at Yaba College of Technology, Yaba, Lagos State, Nigeria, November 23-27, 2014).

19. CS Obayi, PS Nnamchi, R Tolouei, D Mantovani, Effect of stent manufacturing steps on functional degradation of Fe-based biodegradable metals (presented at the 8th BIOMETAL Symposium on Biodegradable Metals for Biomedical Applications at Esterel Resort, Montreal, Canada, May 14 – 17, 2016).

20. Agung Purnama, Camillus Sunday Obayi, Ranna Tolouei, Essowe Mouzou, Carlo Paternoster, Malgorzata Sikora‐Jasinska, Hendra Hermawan, Diego Mantovani, Modulating the degradation behaviour of iron-based alloys by grain-sizing and alloying (presented at 10th World Biomaterials Conference held at the Palais des congrès de Montréal, Montreal, Canada, May 17-22, 2016).

21. CS Obayi, R Tolouei, BA Okorie, DON Obikwelu, D Mantovani. Grain size distribution effects on the degradation and mechanical behaviours of biodegradable metallic biomaterials (presented at 10th World Biomaterials Conference held at the Palais des congrès de Montréal, Montreal, Canada, May 17-22, 2016).

22. C.S. Obayi, P.S. Nnamchi, A.D. Omah, C.C. Daniel-Mkpume, S.I. Neife, P.O. Offor, B.A. Okorie. Metals: Indispensable Medical Implant Materials (presented at 33rd Annual Conference and AGM of Nigerian Metallurgical Society) held at Petroleum Training Institute Conference Centre, Effurun, Delta State, November 01-04, 2017).

23. A.D. Omah, C.S. Obayi, P.O. Offor, I.C. Ezema, B.A. Okorie, S.I. Neife. Experimental Studies of the Dielectric Properties of Carbonized and Uncarbonized Cassava Cortex Composites (presented at 16th Annual Nigerian Materials Congress held at University of Benin, Benin City, Edo State, November 07-10, 2017).


Area of Specialization
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Research Interest
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