Formula for low temperature sintering of 95% resistor ceramic substrate

Abstract

The invention provides a preparation method for a 95% resistor ceramic substrate raw material capable of being rapidly sintered at a low temperature of 1250 DEG C. The raw material is prepared from 94 to 96 wt% of a-alumina (Al2O3), 2 to 3 wt% of barium pyroborate (BaO.2B2O3), 1.5 to 3 wt% of manganese oxide (MnO2), 1 to 1.5 wt% of magnesium carbonate (MgCO3) and 0.5 to 1.5 wt% of titanium oxide (TiO2). The raw material provided by the invention has the characteristics of a low sintering temperature, a fast sintering speed and obvious energy saving and emission reduction effects, has thermal conductivity of 21 to 25 W / m.K and density of 3.75 g / cm<3>, has the advantages of high dielectric strength and high breaking strength, totally satisfies requirements of performance of a subminiaturized resistor and is mainly used for production of electronic ceramic products like a subminiaturized 95% resistor ceramic substrate, a 95% semiconductor integrated circuit package shading ceramic substrate and an electronic Nixie tube alumina ceramic plate.

Description

Technical field [0001] The invention is a preparation method of a 95% resistance ceramic substrate raw material capable of rapid sintering at a low temperature of 1250°C. Background technique [0002] At present, the traditional 95% porcelain raw material formula is to use a-alumina (Al 2 o 3 )94% (W%), burnt talc [Mg 3 Si 4 o 10 (OH) 2 ]3%, kaolin 2SiO2 2 2H 2 O) 3% is formulated, and the sintering temperature is as high as 1700 ° C. This kind of ceramic raw material not only consumes a lot of energy, but also has a long production cycle and high cost. It has not been applied to the ultra-miniature 95% resistance ceramic substrate. Contents of the invention [0003] In order to overcome the disadvantages of high sintering temperature, high energy consumption, long production cycle and high cost of the current traditional 95% ceramic raw material formula, the present invention provides a low sintering temperature, fast sintering speed, suitable for ultra-miniaturi...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the current traditional 95% ceramic raw material formula, such as high sintering temperature, high energy consumption, long production cycle and high cost, the present invention provides a low firing temperature, fast firing speed, suitable for ultra-miniaturization 95% Ceramic raw material formulations required for the production of resistance ceramic substrates