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2025, Vol: 32, Issue: 3
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Original Research 


ELECTRICAL AND CORROSION BEHAVIOUR OF ALUMINIUM-ALUMINIUM NITRIDE PARTICULATE COMPOSITE PRODUCED USING POWDER METALLURGY

Evarastics Polycarp, Mailafiya Luka, Lasisi Shaibu, Muyideen Abdulkadir, Lasisi Isa Olusegun.


Abstract
The properties of aluminium nitride (AlN) such as good coefficient thermal expansion, good wear and corrosion resistance, high mechanical strength, good resistance to thermal shock and good electrical properties have continued to attract research attention in recent times. In this paper, the interest is to investigate the influence of AlN on the electrical conductivity and corrosion properties of Al-AlN particulate composite produced using powder metallurgy. The samples were compacted using the pressure of 450Mpa and sintered at 550 oC for 30 minutes using the two-step sintering method. Four-point probes machine was used to determine the electrical resistivity and subsequently the electrical conductivity of the samples. The samples were immersed in 0.05M NaOH for 24 hours to determine their corrosion behaviour using the weight loss method. The corroded samples were characterized using X-ray Diffractometer (XRD) and SEM. The result of the electrical conductivity of the samples increased with both the amount of reinforcement and magnesium added. The unreinforced aluminium sample recorded the lowest value of electrical conductivity while the sample with composition Al-16.25wt%AlN-1.0wt%Mg gave the highest value, 131.33(Ωm)-1. The results of XRD analyses revealed peaks of aluminium hydroxide (Al(OH)3) as the main corrosion product on the samples. The results show that corrosion rates of the samples decrease with weight fractions of AlN and Mg. The sample containing Al-16.25wt%AlN-1.0wt%Mg offered the best corrosion resistance with a corrosion rate equivalent to 22.74mm/y; while the unreinforced aluminium sample corroded the most.

Key words: Composite, Corrosion, electrical conductivity, Powder Metallurgy, XRD


 
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How to Cite this Article
Pubmed Style

Polycarp E, Luka M, Shaibu L, Abdulkadir M, Olusegun LI. ELECTRICAL AND CORROSION BEHAVIOUR OF ALUMINIUM-ALUMINIUM NITRIDE PARTICULATE COMPOSITE PRODUCED USING POWDER METALLURGY. NJE. 2023; 30(3): 36-42. doi:10.5455/nje.2023.30.03.06

Web Style

Polycarp E, Luka M, Shaibu L, Abdulkadir M, Olusegun LI. ELECTRICAL AND CORROSION BEHAVIOUR OF ALUMINIUM-ALUMINIUM NITRIDE PARTICULATE COMPOSITE PRODUCED USING POWDER METALLURGY. https://www.njeabu.com.ng/?mno=162522 [Access: June 23, 2026]. doi:10.5455/nje.2023.30.03.06

AMA (American Medical Association) Style

Polycarp E, Luka M, Shaibu L, Abdulkadir M, Olusegun LI. ELECTRICAL AND CORROSION BEHAVIOUR OF ALUMINIUM-ALUMINIUM NITRIDE PARTICULATE COMPOSITE PRODUCED USING POWDER METALLURGY. NJE. 2023; 30(3): 36-42. doi:10.5455/nje.2023.30.03.06


Vancouver/ICMJE Style

Polycarp E, Luka M, Shaibu L, Abdulkadir M, Olusegun LI. ELECTRICAL AND CORROSION BEHAVIOUR OF ALUMINIUM-ALUMINIUM NITRIDE PARTICULATE COMPOSITE PRODUCED USING POWDER METALLURGY. NJE. (2023), [cited June 23, 2026]; 30(3): 36-42. doi:10.5455/nje.2023.30.03.06


Harvard Style

Polycarp, E., Luka, . M., Shaibu, . L., Abdulkadir, . M. & Olusegun, . L. I. (2023) ELECTRICAL AND CORROSION BEHAVIOUR OF ALUMINIUM-ALUMINIUM NITRIDE PARTICULATE COMPOSITE PRODUCED USING POWDER METALLURGY. NJE, 30 (3), 36-42. doi:10.5455/nje.2023.30.03.06


Turabian Style

Polycarp, Evarastics, Mailafiya Luka, Lasisi Shaibu, Muyideen Abdulkadir, and Lasisi Isa Olusegun. 2023. ELECTRICAL AND CORROSION BEHAVIOUR OF ALUMINIUM-ALUMINIUM NITRIDE PARTICULATE COMPOSITE PRODUCED USING POWDER METALLURGY. Nigerian Journal of Engineering, 30 (3), 36-42. doi:10.5455/nje.2023.30.03.06


Chicago Style

Polycarp, Evarastics, Mailafiya Luka, Lasisi Shaibu, Muyideen Abdulkadir, and Lasisi Isa Olusegun. "ELECTRICAL AND CORROSION BEHAVIOUR OF ALUMINIUM-ALUMINIUM NITRIDE PARTICULATE COMPOSITE PRODUCED USING POWDER METALLURGY." Nigerian Journal of Engineering 30 (2023), 36-42. doi:10.5455/nje.2023.30.03.06


MLA (The Modern Language Association) Style

Polycarp, Evarastics, Mailafiya Luka, Lasisi Shaibu, Muyideen Abdulkadir, and Lasisi Isa Olusegun. "ELECTRICAL AND CORROSION BEHAVIOUR OF ALUMINIUM-ALUMINIUM NITRIDE PARTICULATE COMPOSITE PRODUCED USING POWDER METALLURGY." Nigerian Journal of Engineering 30.3 (2023), 36-42. Print. doi:10.5455/nje.2023.30.03.06


APA (American Psychological Association) Style

Polycarp, E., Luka, . M., Shaibu, . L., Abdulkadir, . M. & Olusegun, . L. I. (2023) ELECTRICAL AND CORROSION BEHAVIOUR OF ALUMINIUM-ALUMINIUM NITRIDE PARTICULATE COMPOSITE PRODUCED USING POWDER METALLURGY. Nigerian Journal of Engineering, 30 (3), 36-42. doi:10.5455/nje.2023.30.03.06


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