The invention relates to a preparation method of a high-temperature corundum mullite crucible, and belongs to the field of silicate crucible preparation. The crucible comprises, by mass, 10-50% of calcined alumina powder, 5-20% of kyanite powder, 20-40% of kaolin powder and 5-30% of white corundum particles. The preparation method having five steps has the advantages of scientificity, reasonability, simplicity and easiness in operation, and convenience in industrial production; the prepared crucible has the advantages of long service life, high temperature resistance, high creep resistance andthe like.

Preparation method of high-temperature corundum mullite crucible

The invention relates to a preparation method of a cordierite crucible, and belongs to the field of preparation of silicate crucibles. The cordierite crucible comprises, by mass, 5-40% of talcum powder, 10-40% of aluminum oxide powder, 5-0% of cordierite powder and 10-40% of kaolin powder. The preparation method comprises five steps, and is scientific, reasonable, simple and feasible. The preparedcrucible has the advantages of being long in service life and free of slag falling, reducing pollution to customer products and guaranteeing the stability of product quality.

Preparation method of cordierite crucible

The invention discloses a saggar and a production method thereof. The sagger comprises, by weight, 38-39% of corundum powder, 22-23% of clay, 7-8% of hard soil, 31-32% of mullite and 0.5-1% of a binder. The production method of the sagger comprises the following steps: preparing above materials according to corresponding proportions, adding water accounting for 10% of the total weight of the prepared materials to the prepared materials, stirring the materials and the water for 5-10 min, and sequentially carrying out mold filling, demolding, air-drying and sintering on the obtained uniformly-stirred slurry to obtain the sagger. The proportions of all the components in the prepared materials for producing the sagger are adjusted to make the produced sagger have a small thermal expansion coefficient and be not prone to deform in the high temperature sintering process and increase the cycle use frequency of the sagger, so the service life of the sagger is prolonged, and the sintering costof a ceramic substrate is reduced.

Saggar and production method thereof

The invention relates to a saggar for sintering of electroceramic materials and a preparation method thereof and belongs to the field of electroceramic sintering tools. The saggar for sintering of electroceramic materials is prepared from alumina powder, white kaolin powder, yellow kaolin powder, talcum powder, green coke powder, clay powder, white corundum, quartz, iolite and a plasticizer, has good thermal shock effect, and is low-cost. According to the saggar, product uniformity and stability can be maintained in batch production.

Wang Zhe

Papers

Saggar for sintering of electroceramic materials and preparation method thereof