A kind of lead-free low-melting point glass-ceramic powder and preparation method thereof

Abstract

The invention discloses lead-free low-melting point microcrystalline glass powder and a preparation method thereof. The lead-free low-melting point microcrystalline glass powder comprises the following components in percentage by weight: 65%-85% of Bi2O3, 1%-7% of TiO2, 3%-10% of B2O3, 3%-15% of SiO2, 0%-10% of RO and 1%-5% of P2O5, wherein R is Mg, Cu and Sr, and RO is one or more of MgO, CuO and SrO; the total percentage by weight of Bi2O3 and B2O3 is 70%-90%; and the total percentage by weight of TiO2 and P2O5 is 3%-8%. The microcrystalline glass powder disclosed by the invention has the advantages of environmental friendliness, good performances, low melting point, glass transition temperature of 410-460 DEG C, wide sintering temperature range and good chemical stability, and can be used in the temperature range of 540-850 DEG C. The lead-free low-melting point microcrystalline glass powder is suitable for slurry in a variety of different sintering temperature ranges.

Description

【Technical field】 [0001] The invention relates to a lead-free low-melting point glass-ceramic powder and a preparation method thereof, belonging to the technical field of inorganic materials. 【Background technique】 [0002] As a new type of material, electronic paste is far superior to traditional circuit equipment (such as resistance wire, electric heating tube, etc.), and has the characteristics of environmental protection, high efficiency and energy saving, and its cost is also close to traditional materials. It is the future electronic information The main application direction of the industry. [0003] The electronic paste product is a composite material that integrates a number of advanced materials, including inorganic non-metallic, polymer and metal materials, and is mainly used to manufacture thick film integrated circuits, resistors, resistor networks, capacitors, MLCC, conductors Ink, solar cell electrode, LED cold light source, OLED, printed high-resolution cond...

AI Technical Summary

Problems solved by technology

Although the use of two or more composite glass frits with different softening temperatures can broaden the sintering temperature of the paste within a certain range, the expanded sintering temperature range is very limited.

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