The formation of aluminides in intermetallic nickel aluminide-based nanocomposites

Ismail, Roslina; Yaacob, Iskandar Idris

doi:10.1016/j.jallcom.2004.09.032

Cited by 8 publications

(1 citation statement)

References 15 publications

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“…The excellent properties of intermetallic Ni-Al particularly corrosion stability has attracted many researchers' attention to investigate the oxidation behaviour of Al from Ni-Al film onto its surface to form protective layer of crystallineγ-Al 2 O 3 [4][5][6][7]. The synthetic methods to form intermetallic Ni-Al in powder form are diverse ranging from solid state reaction to chemical state reaction such as reaction infiltration [8] shock-induced reaction synthesis [9], hydrogen plasma-metal reaction [10], powder metallurgy [11], mechanical milling [12], and chemical reduction [13]. Among them, wet chemical approach appears to be acceptable for synthesis very fine Ni-Al nanoparticles, Ni-Al Nps (~1nm).…”

Section: Introductionmentioning

confidence: 99%

Wet Chemical Synthesis of Ni-Al Nanoparticles at Ambient Condition

Fadil

Saravanan

Yoshikawa

et al. 2012

AMR

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The synthesis of intermetallic Ni-Al nanoparticles by co-reduction approach of several organometallic precursors with sodium naphthelide in non-aqueous solution was studied. The state of the art in nanoparticles synthesisation is the selection of suitable precursors and the adaption of colloid chemistry to non-aqueous media at the room temperature under inert atmosphere. The reduction of an organometallic precursor, nickel (II) acetylacetonate, Ni(Acac)2as a source of Ni element of the intermetallic, and aluminum trichloride, AlCl3in tetrahydrofuran (THF) solution gave a black particles. The powder X-ray diffraction spectroscopy (pXRD) result shows an expansion of lattice parameter for FCC-Ni indicating the cooperation of Al atoms in Ni structures. The estimation value of Al concentration using Scherrer’s equation is 10 at%. The particles were investigated in more detail by hard X-ray photoemission spectroscopy (HX-PES). The HX-PES spectrums confirmed that the black particles has binding energy consistent to standard materials of Ni3Al. The absence of organic residues shown by the Fourier-transform infrared, FTIR spectrometer indicates that the as prepared Ni-Al nanoparticles are free from by-products.

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