The study of lead-free low-melting sealing glass with properties such as low glass transition temperature (T g ), low softening temperature (T s ), good wettability on the substrate, is in process. One of the low-sintering lead-free glass compositions, the bismuth glass system is considered to be an alternative to lead oxide glass. Research on the development of lead-free low-melting sealing glass in ZnOP 2 O 5 Bi 2 O 3 (ZPB) system was prepared and the effects of substitution of Bi 2 O 3 for ZnO on the structural, thermal, and wetting properties of a sealing glass were studied. The changes in T g , T s and coefficient of thermal expansion (CTE) may reflect decreasing connectivity of the glass structure, due to the increasing BiO bonds. This structure changes have an effect on wettability on the substrate. The addition of higher amounts of Bi 2 O 3 improved the wettability of the glass on the substrate. The ZPB glass, possessing properties of low T g and good wettability, is suitable for low-to-mid temperature sealing applications.

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This study analyzes the effect of low-frequency (10 kHz-10 MHz) magnetic shielding effectiveness (SE) of a conductive sheet according to the aperture size used to measure its SE. To analyze the conductive sheet SE according to the size of the aperture, the analytical and numerical results of the aperture SE are compared and verified experimentally.