Lead-free low-temperature glass for manufacturing diode glass shell
A low-temperature glass and diode technology, applied in the field of lead-free low-temperature glass, can solve the problems of cracking and acid corrosion resistance that cannot meet the requirements for use, and achieve the effect of improving acid corrosion resistance and maintaining appearance.
Inactive Publication Date: 2012-08-15
金招娣
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Abstract
The invention discloses lead-free low-temperature glass for manufacturing a diode glass shell. The glass mainly contains the following components in percentage by mass: 40 to 60 percent of SiO2, 10 to 25 percent of B2O3, 1 to 10 percent of P2O5, 10 to 25 percent of Li2O, Na2O and K2O, 1 to 10 percent of MgO, CaO, SrO and BaO, 0.5 to 10 percent of Al2O3, 0.5 to 5 percent of TiO2, 1 to 10 percent of ZnO, 0 to 5 percent of F2, and 0 to 2 percent of clarifying agent, wherein the clarifying agent can be one or more of Sb2O3, CeO2 and/or As2O3. The lead-free low-temperature glass has very excellent acid corrosion resistance, and meets the requirement of a diode planting process for acid resistance of the glass shell. In addition, the expansion coefficient of the lead-free glass is matched with that of a Dumet wire, the softening temperature does not exceed 630 DEG C, and the glass can be stably sealed with the Dumet wire at the temperature of below 700 DEG C.
Technology Topic
Acid resistanceMetallurgy +3
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