Lead-free low-melting-point glass powder and production process thereof

Abstract

The invention relates to lead-free low-melting point glass powder and a production process thereof. A formula of the lead-free low-melting-point glass powder comprises a component A and a component B, wherein the component A comprises the following raw materials by mass ratio: SiO2 2-28, CaO 27-40, ZnO 2-7, B2O3 1-11, Na2O 1-4, K2O 1-3, F<-> 1-2, MgO 0.1-3, Sb2O3 1-2, MoO3 0.5-5, WO3 0.5-5 and Li2O 1-5; the component B is thermal expansion regulating powder; and the mass ratio of the component B to the component A is 1:4-2:3. The invention has the advantages of improving the formula on the basis of a production technology of the traditional low-melting-point glass and then forming into powder through melting, water quenching and ball-milling processes, thereby meeting the requirements on lead-free environmental protection and lower softening temperature and working temperature.

Description

technical field [0001] The invention belongs to the field of inorganic materials, in particular to a lead-free low-melting glass powder and a production process. Background technique [0002] Low-melting point glass can be used as a welding material for glass. It is widely used in the sealing and bonding of electronic devices such as electro-optical tubes and electron tubes, as well as components such as semiconductors. It can also be used in the connection between glass materials and the repair of surface defects. , from the beginning of its appearance, there have been many varieties with large differences in performance. [0003] The original low-melting point glass often contained harmful metals such as lead, which was likely to cause environmental pollution and physical injury to production workers. Although the later low-melting point glass improved this defect, it still performed poorly in low-temperature softening and low-temperature work. Higher temperatures are req...

AI Technical Summary

Problems solved by technology

[0003] The original low-melting point glass often contained harmful metals such as lead, which was likely to cause environmental pollution and physical injury to production workers. Although the later low-melting point glass improved this defect, it still performed poorly in low-temperature softening and low-temperature work. Requires higher temperatures to soften and flow for soldering