Synthesis and thermal stability of nanocrystalline chromium disilicide

Role of milling parameters and impurity on the thermoelectric properties of mechanically alloyed chromium silicide

“…For the purpose of comparison, the data for MoSi 2 (another group VI disilicide) and CoSb 3 (a potential thermoelectric material for power generation) are also given [17]. It is seen that the CrSi 2 powder is thermally stable in the temperature range of 300-900 K. The thermal stability of CrSi 2 is attributed to the formation of a protective scale of chromium oxide in this temperature range [6,18], which prevents further oxidation of the material.…”

“…It also has a moderately high Seebeck value of around 90 V/K. In addition, CrSi 2 is reported to be thermally stable in air up to 1050 K [6] and hence can be a candidate for high temperature applications.…”

Thermoelectric properties of Cr1−Mo Si2

“…Transition metal semiconducting silicides are potential candidates for TE materials, because they are environment-friendly, stable at high temperatures, and inexpensive [1]. To date the disilicide of chromium (CrSi 2 ) has attracted attention as a promising TE material because of its semiconducting nature [2,3] and thermal oxidative stability in air up to 1000 K [4]. CrSi 2 has a hexagonal C40 crystal structure with a space group of P6 2 22 [5,6].…”

Thermoelectric Properties of Cr_1-<i>_x</i>W<i>_x</i>Si₂

“…From this perspective, chromium silicide (CrSi 2 ) is an attractive candidate. CrSi 2 with the hexagonal C40 structure (space group P6 2 22) possesses excellent TE properties such as high oxidation resistivity 2) , high S of ~100 μV·K −1 , and σ of ~1 × 10 5 Ω −1 ·m −1 around 300 K 3) . However, this compound has a high κ of 10 W·m −1 ·K −1 at 300 K 4) , which decreases the zT value of CrSi 2 compared to currently available TE materials, such as PbTe-and Bi 2 Te 3 -based alloys 1) .…”