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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Effect of Li2O on the heterogeneous structure of equi-molar lead borate glasses
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Effect of Li2O on the heterogeneous structure of equi-molar lead borate glasses

机译：Li2O对等摩尔硼酸铅玻璃异相结构的影响

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摘要

Different glass samples in the Li2O, PbO and 8203 system have been prepared by melt quenching method. These glasses were classified in two groups such as 0.5 B2O3, (0.5-x) PbO, xLi(2)O and (0.5+y) B2O3: (0.25-y)PbO; 0.25Li(2)O. The IR spectra almost show broad bands in the frequency range (8001050) cm(-1) and (1100-1500) cm(-1), together with different weak bands over the range of investigation (2400-3000) cm(-1). The deconvolution analyses of these IR spectra reveals presence of multi structure arrangements from BO4 and BO3 groups, such as penta, tri, and diborates grouping together with meta; ortho borates as well as PbOn groups. Partial replacement of PbO by Li2O causes decrease in microhardness, a change which is attributed to the decrease in the concentration of ortho borate groups as is it revealed from the bands area analysis. The IR analysis shows also that the total concentration of (meta + ortho) borates is nearly constant while their individual concentrations is proportional depending on the relative concentration of PbO and Li2O.
机译：通过熔融淬火法制备了Li2O，PbO和8203体系中的不同玻璃样品。这些玻璃分为两类，例如0.5 B2O3，（0.5-x）PbO，xLi（2）O和（0.5 + y）B2O3：（0.25-y）PbO; 0.25Li（2）O。红外光谱几乎显示了在（8001050）cm（-1）和（1100-1500）cm（-1）频率范围内的宽带，以及在研究范围（2400-3000）cm（-1）范围内的不同弱带）。对这些IR光谱的反卷积分析揭示了来自BO4和BO3基团的多结构排列的存在，例如五元，三元和二硼酸盐基团与间位基团。邻硼酸盐以及PbOn基团。用Li2O部分取代PbO会导致显微硬度降低，这一变化归因于原带硼酸根基团浓度的降低，这从谱带​​面积分析中可以看出。红外分析还表明，（甲基+邻位）硼酸根的总浓度几乎恒定，而它们各自的浓度则取决于PbO和Li2O的相对浓度。

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