掺钇镓陶瓷电热性能的进一步研究

M.M.Abou Sekkina , E. El-Shereafy , M. Gouda , A.S. Diab
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引用次数: 4

摘要

在固体状态下制备了许多掺钇镓的多晶陶瓷样品,并用粉末x射线衍射、红外光谱和紫外光谱对其进行了研究。比较了不同钇含量和不同温度(最高150℃)下试样的电导率(dc)、体积密度、真密度和孔隙率。确定了所得结果的相关性。如果先前在1350°C下进行烧制,则可以追踪到化合物形成的一些证据,而在800°C下进行烧制则不是这样。用钇掺杂镓导致电导率降低和传导模式不变。
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Further investigations on the electrothermal properties of yttria-doped gallia ceramics

Numerous polycrystalline ceramic specimens of yttria-doped gallia, have been prepared in the solid state, have been studied by powder X-ray diffraction IR and UV spectroscopy. The electrical conductivities (D.C.) measured for various yttria contents and at various temperatures up to 150°C, and the bulk and true density, and the percentage porosity of the test samples are compared. Correlations of the results obtained have been determined. Some evidence of compound formation could be traced if prior firing had been carried out at 1350 °C, this was not the case when firing was carried out at 800°C. Doping gallia with yttria results in a decreased conductivity and an unaltered mode of conduction.

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