Zirconium oxide sandwich composite calcining-endure plate and preparation process thereof

Abstract

The invention discloses a zirconium oxide sandwich composite calcining-endure plate. The zirconium oxide sandwich composite calcining-endure plate comprises a matrix mullite calcining-endure plate and zirconium oxide paint. The matrix mullite calcining-endure plate comprises the following raw materials in percentage by mass: 20 to 25 percent of andalusite with thickness degree between 1 and 1.5 mm, 5 to 10 percent of andalusite with thickness degree between 0.5 and 1 mm, 5 to 8 percent of andalusite with thickness degree less than 0.5 mm, 10 to 15 percent of plate-shaped corundum with thickness degree between 0.5 and 1 mm, 5 to 10 percent of plate-shaped corundum with thickness degree less than 0.5 mm, 5 to 10 percent of electrical melting mullite with thickness degree between 0.5 and 1 mm, 8 to 12 percent of sillimanite powder, 15 to 20 percent of alpha-aluminium oxide (Al2O3) powder, 2 to 3 percent of silica micropowder, 3 to 4 percent of clay and 3 to 4 percent of binding agent. The zirconium oxide paint comprises the following raw materials in percentage by mass: 75 to 80 percent of zirconium oxide with granularity less than or equal to 600 meshes and 20 to 25 percent of silicasol. In addition, the invention also provides a process for preparing the zirconium oxide sandwich composite calcining-endure plate. The zirconium oxide sandwich composite calcining-endure plate has the advantages of high-temperature resistance, high mechanical strength, stable chemical properties, high stability of thermal shock resistance, long service life and high anti-stripping property.

Description

technical field [0001] The invention relates to a zirconia sandwich composite setter plate and a preparation process thereof. Background technique [0002] The firing plate is the carrier for sintering electronic components. Its quality and performance have a direct impact on the quality, output, energy consumption, and cost of fired products. During use, the setter plate not only has to withstand the high temperature sintering temperature of electronic components and the pressure brought by the setter product, but also has to withstand repeated cold and heat cycles. Therefore, it is required to have high temperature resistance, high mechanical strength, stable chemical properties, and heat resistance. Good vibration stability and long service life. The setter plate made of silicon carbide is easy to oxidize under high temperature conditions, and it is easy to react with the product of the setter, and the high temperature chemical stability is poor. Coating a layer of prote...

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Problems solved by technology

The setter plate made of silicon carbide is easy to oxidize under high temperature conditions, and it is easy to react with the product of the setter, and the high temperature chemical stability is poor. Coating a layer of protective material on the surface makes the preparation process complicated and the cost increases; The use temperature of the firing plate is low, and it is easy to deform during use; the setter plate made of zirconia has good chemical stability, but the raw materials used are expensive, and are only used in some high-end products; the setter plate made of mullite has high strength , good temperature resistance, excellent thermal shock resistance, but because clay, silica powder, etc. The reaction will cause product pollution. In order to avoid this situation, the method often used in the application process is to sprinkle a layer of corundum sand on the surface of the mullite setter plate, which will not only cause the thermal shock resistance of the setter plate to deteriorate, but also corundum The loose sand attached to the surface of the mullite setter plate is easy to fall off and needs to be replenished continuously