Fabrication of Electroless Ni Plated Fe–Al2O3 Ceramic–Metal Matrix Composites

Ni–Fe metal matrix composites reinforced with Al 2 O 3 have been fabricated by tube furnace sintering at various temperatures. A uniform nickel layer on Al 2 O 3 and Fe powders was deposited using electroless plating technique prior to sintering, allowing closer surface contact than can be achieved...

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Bibliographic Details
Published in:Transactions of the Indian Institute of Metals 2015-10, Vol.68 (5), p.675-681
Main Author: Yönetken, Ahmet
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Corrosion and Coatings
Materials Science
Metallic Materials
Technical Paper
Tribology
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Summary:Ni–Fe metal matrix composites reinforced with Al 2 O 3 have been fabricated by tube furnace sintering at various temperatures. A uniform nickel layer on Al 2 O 3 and Fe powders was deposited using electroless plating technique prior to sintering, allowing closer surface contact than can be achieved using conventional methods such as mechanical alloying. The reactivity between Al 2 O 3 and Fe powders to form carbides of Fe is controlled through Ni layer existing on the starting powders. A composite consisting of quaternary additions, a ceramic phase, Al 2 O 3 , within a matrix of FeNi, has been prepared at the temperature range 1000–1400 °C under Ar shroud. X-ray diffraction, scanning electron microscope (SEM), compressive testing and hardness measurements were employed to characterize the properties of the specimens. Experimental results carried out for 1400 °C suggest that the best properties as σmax and hardness (HV) were obtained at 1400 °C and the tube sintering of electroless Ni plated Al 2 O 3 and Fe powders is a promising technique to produce ceramic reinforced Ni–Fe composites.
ISSN:0972-2815
0975-1645
DOI:10.1007/s12666-014-0497-1