Application of spark plasma sintering to the fabrication of binary and ternary skutterudites

Abstract

Spark plasma sintering (SPS) synthesis of CoSb 3 and LaFe 4 Sb 12 from ball-milled elemental metal powders has been performed obtaining samples with high relative densities ($99%). Fracture behaviour, the microstructure and mechanical properties were studied. From ultrasound and nano-indentation measurements, Young's moduli of 148 GPa for CoSb 3 and 141 GPa for LaFe 4 Sb 12 were deduced. SPS has been also applied to compact alkali metal and alkaline-earth metal iron antimonides with filled skutterudite structure. r

Ba-Filling Effect on the Uniaxial Tensile and Compressive Mechanical Behavior of Crystalline CoSb3: A Molecular Dynamics Study

“…2b. The initial Young's modulus of both the binary and filled CoSb 3 are comparable with the experimental value, 148 GPa, 21 for the polycrystalline binary CoSb 3 sample. As also seen from Fig.…”

Synthesis, Crystal Structure, and Transport Properties of Na22Si136

“…39 The SPS technique has been shown to be very effective in the preparation and consolidation of a diverse range of materials. [40][41][42] The measured q, S, and j in the temperature range of 60 K to 300 K for the Na 22 Si 136 specimen consolidated using SPS are shown in Fig. 2.…”

Nanostructuring of p- and n-type skutterudites reaching figures of merit of approximately 1.3 and 1.6, respectively

“…Nd 0 . 72 Fe 4 Sb 12 [107], NdFe 4 Sb 12 [112], Pr 0.87 Fe 4 Sb 12 [108], PrFe 4 Sb 12 [113] and CoSb 3 [3,23,95,107,110,111]. Some representative end members are plotted in Fig.…”

“…2a. Co-content, x, vs. lattice parameter, a, for DD y (Fe 1Àx Co x ) 4 Sb 12 skutterudites, data from the literature [45,48,49,60] and selected data for the end members [23,[107][108][109][110][111]. aggregation.…”