Effects of oxide additive on thermoelectricity of FeSi2
Thermoelectricity has been hot issue in these days, because of environmental problems and energy sources deficit. Moreover, material development for thermoelectricity is now busy in oxide and metal or alloy, basically. However, conclusive materials with good performance have not yet been found in application basis. We have studied oxide-added beta-FeSi2 for these years. Iron disilicide is well known and utilized in relatively higher temperature. In this report, we indicated our successful improvement of performance of beta-FeSi2 added with Ta2O5 showing the figure of merit almost 0.3 times 10-3/K This was obtained by reducing thermal conductivity and electrical resistivity (a half of standard FeSi2)
Effect of Electronic Structure on Seebeck Coefficient of Oxide Thermoelectric Semiconductor and Role of the Oxide
An oxide is functionally classified into two categories when regarding oxide as thermoelectricity: 1) an oxide itself has thermoelectric properties such as CaMnO3, homologous series of (ZnO)m and NaCo2O4, and they have been researched since around 1995. 2) there are researches on oxide as an additive to conventional thermoelectric material. We have investigated to approach thermoelectric property from the electronic structures by ab initio calculation. We propose to estimate Seebeck coefficient of oxide by regarding movement of electron between energy levels in the electronic structures. Thereby, it will lead to a new thermoelectric material of oxide. Furthermore, we can improve figure of merit by adding oxide to FeSi2 due to reducing thermal conductivity in the present study.
Industrial Relations in 1988
Undoubtedly, the election of the Hawke Labor Government in 1983 marked a turning point in Australian industrial relations. To a large extent industrial turbulence receded, helped along by global econ omic instability and the influence ofthe Prices and Incomes Accord between the Australian Labor Party and the Australian Council of Trade Union (ACTU). Arguably, the apparent success of the Accord owed something to a widespread concern within unions that the election of a Liberal-National Party government at the federal level would have resulted in a major pro gram of economic regulation, especially in relation to the institutions ofthe labour market. During 1988, despite an increasingly buoyant economy, the continuing influence of these economic and political conditions ensured that the level of industrial disputation remained subdued by historical stan dards, though those opposed to the nascent corporate state or centralised wage fixing may have been heartened by signs that wage restraint was fraying at the...