Effects of mechanical milling on preparation and properties of CuAl1−xFexO2 thermoelectric ceramics

Improvement in electrical properties of thermoelectric CuAlO2 ceramics aided by aluminosilicate glass

“…Besides, there exist a lot of pores among CAO grains. It affirms the poor sintering activity of CAO, as reported by Liou, et al and Park, et al . The large porosity is responsible for a big difference in the electrical conductivity compared to the theoretical conductivity of CAO.…”

“…Several ways were adopted to improve the densification behaviors of CAO in the solid‐state sintering processes. The density of CAO can be enhanced by means of the substitution of several elements, such as Ca and Fe, to the Al sites. It is reported that the density of CuAl 0.9 Fe 0.1 O 2 reached up to a maximum of 4.60 g·cm −3 , 89.9% of the theoretical density .…”

“…The density of CAO can be enhanced by means of the substitution of several elements, such as Ca and Fe, to the Al sites. It is reported that the density of CuAl 0.9 Fe 0.1 O 2 reached up to a maximum of 4.60 g·cm −3 , 89.9% of the theoretical density . Besides of cations doping, the addition Ag 2 O into CAO to form a composite structure is another route to improve its sintering behavior.…”

Synthesis of CuAlO2 from chemically precipitated nano-sized precursors

“…CuAlO 2 also showed promising thermo-electric [20][21][22][23][24], ozone sensing [13,25] photocatalytic hydrogen evolution [26,27] properties and enhanced cathodic photocurrents in p-type dye-sensitized solar cell applications [28,29]. The synthesis of both nanostructured bulk or nanometer size CuAlO 2 powders is critical for many applications, such as thermoelectrics for waste heat recovery or for photoelectrochemical applications, where a high amount of interface is essential.…”

Effects of Ti addition on properties of Sr2Nb2O7 thermoelectric ceramics

“…Reaction-sintering process had also been used to produce other complex perovskite relaxor and microwave dielectric ceramics by our group [17][18][19]. In recent studies, we prepared CuAl 0.9 Ca 0.1 O 2 and CuAl 1À x Fe x O 2 thermoelectric ceramics using reaction-sintering process [20,21]. In this study, we try to obtain Sr 2 Nb 2 O 7 ceramics via the reaction-sintering process.…”