Mechanically induced combustion synthesis and thermoelectric properties of nanostructured strontium hexaboride (SrB6)

Jalaly, Maisam; Khosroshahi, Behzad K.; Gotor, F.J.; Sayagués, María Jesús; Yamini, Sima Aminorroaya; Failamani, Fainan; Mori, Takao

doi:10.1016/j.ceramint.2019.04.163

Cited by 4 publications

(1 citation statement)

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“…In the present study, Cu–NbC nanocomposite was prepared, for the first time, by the magnesiothermic combustion process in which a mechanically induced self‐sustaining reaction (MSR) occurs during a short‐term milling. We have previously synthesized many valuable compounds and composites like ZrB 2 , 22 HfB 2 , 23 BCN, 24 SrB 6 , 25 and ZrB 2 –ZrC–SiC 26 by using magnesiothermic combustion process, which provides a fast, facile, and cost‐effective preparation method.…”

Section: Introductionmentioning

confidence: 99%

The effects of NbC nanoparticles synthesized by combustion method on the mechanical properties of Cu–NbC nanocomposite

Moghim

Jalaly

Sadeghzadeh

2022

Int J Applied Ceramic Tech

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In the first stage of this work, the master nanocomposite of niobium carbide (NbC)-Cu (ceramic-based nanocomposite) was synthesized by a mechanically induced magnesiothermic combustion in the Nb 2 O 5 /CuO/Mg/C system. Ignition time in this system was recorded to be ∼28 min of milling. In the second stage, appropriate amounts of NbC-Cu nanocomposite powder were mixed with pure copper powder to prepare Cu-based nanocomposite with 0, 5, 10, 15, and 20 volume fraction of NbC. The final metal matrix nanocomposite powder was sintered by spark plasma sintering method. The density of nanocomposite specimens decreased with increasing the percentage of NbC nanoparticles, while the microhardness of specimens increased with increasing nano-NbC content. Regarding the tensile test, the sample Cu-10 vol.% NbC nanocomposite with a strength of 372 MPa (∼63% higher than that of nonreinforced copper) was the best composition, and the nanocomposite strength decreased at higher NbC concentrations, mostly due to the agglomeration and nonhomogeneous distribution of reinforcing nanoparticles.

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