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物理学
Synthesis of functional nanocrystallites through reactive thermal plasma processing
<正>Synthesis of functional nano-structured powders has been developed through reactive thermal plasma processing.Arc discharge,which is the so-called thermal plasma,proves to be a useful tool in the synthesis and surface modification of a wide range of metals and inorganic materials.Its advantages as reaction fields are as follows;(1) Thermal plasmas have quite high temperatures(up to<15000K).As the plasmas are generated at relatively high pressures(close to the atmospheric pressure),they have large densities and are considered to be at equilibrium(local thermal equilibrium).That is,the temperatures of heavy particles(such as atoms,molecules, and ions) are almost equal to that of the light species(that is,electrons);(2) High concentrations of chemically reactive radicals enhance the reactivity of the thermal plasmas;(3) Superfast quenching(<10~5 to<10~6K/s) takes place in the plasma tail flame region.
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第七届中国功能材料及其应用学术会议论文集(第7分册)
2010年
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