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Development of Perovskite-type Cobaltates and Manganates for Thermoelectric Oxide Modules
Weidenkaff, A.,Aguirre, M.H.,Bocher, L.,Trottmann, M.,Tomes, P.,Robert, R. The Korean Ceramic Society 2010 한국세라믹학회지 Vol.47 No.1
Ceramics with perovskite-type structure are interesting functional materials for several energy conversion processes due to their flexible structure and a variety of properties. Prominent examples are electrode materials in fuel cells and batteries, thermoelectric converters, piezoelectrics, and photocatalysts. The very attractive physical-chemical properties of perovskite-type phases can be modified in a controlled way by changing the composition and crystallographic structure in tailor-made soft chemistry synthesis processes. Improved thermoelectric materials such as cobaltates with p-type conductivity and n-type manganates are developed by following theoretical predictions and tested to be applied in oxidic thermoelectric converters.
Development of Perovskite-type Cobaltates and Manganates for Thermoelectric Oxide Modules
A. Weidenkaff,M.H. Aguirre,L. Bocher,M. Trottmann,P. Tomes,R. Robert 한국세라믹학회 2010 한국세라믹학회지 Vol.47 No.1
Ceramics with perovskite-type structure are interesting functional materials for several energy conversion processes due to their flexible structure and a variety of properties. Prominent examples are electrode materials in fuel cells and batteries, thermoelectric converters, piezoelectrics, and photocatalysts. The very attractive physical-chemical properties of perovskite-type phases can be modified in a controlled way by changing the composition and crystallographic structure in tailor-made soft chemistry synthesis processes. Improved thermoelectric materials such as cobaltates with p-type conductivity and n-type manganates are developed by following theoretical predictions and tested to be applied in oxidic thermoelectric converters.
Effect of milling time on dual-nanoparticulate-reinforced aluminum alloy matrix composite materials
Kwon, H.,Saarna, M.,Yoon, S.,Weidenkaff, A.,Leparoux, M. Elsevier Sequoia 2014 Materials science & engineering. properties, micro Vol.590 No.-
Carbon nanotubes (CNT) and nano-silicon carbide (nSiC)-reinforced aluminum (Al)-6061 alloy matrix composite materials were fabricated using high-energy ball milling and hot-pressing processes. The nSiC was used not only as a solid mixing agent to better disperse the CNTs in the Al powder, but also as a mean of inducing fine particle strengthening. The densification behavior of the dual-nanoparticulate-reinforced composites varied with the milling time. The crystallite sizes of Al in composites became significantly smaller when the milling time was increased. Moreover, the high-energy ball milling time significantly affected the microstructure and mechanical properties of the composites. We believe that the dual-nanoparticulate-reinforced composites can be used in a variety of applications as industrial component materials with precisely controlled properties.