Preparation of the Barium Strontium Titanate/Magnesium Oxide Plates by Non-Aqueous Gel-Casting

Abstract:

Barium strontium titanate/magnesium oxide composite ceramic plates were prepared by non-aqueous gel-casting using barium strontium titanate and MgO as the raw materials. The rheological properties of the non-aqueous slurries, the dosages of the catalyst and initiator, micro structures and phase structures of the sintering ceramic plates were investigated and analyzed. The results showed that the slurry with solid content of 50wt% in non-aqueous gel-casting had excellent rheological properties and operating characteristics. Ba0.6Sr0.4TiO3/MgO plates with a smooth surface and dense structure were fabricated through desiccation and sintering at 1300°C, and the relative density is up to 4.14g/cm3. The polished surface of the ceramic substrate was composed of 35% MgO and 65% Ba0.6Sr0.4TiO3, and the content of Ba0.6Sr0.4TiO3 was obviously higher compared to the content in the raw materials which was explained by the phenomena of surface phase enrichment.

• Periodical: Advanced Materials Research (Volumes 105-106)
• Pages: 794-797
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.105-106.794
• Online since: April 2010
• Authors: Chun Rong Jiao, Da Ming Chen, Jian Feng Tong
• Keywords: Barium Strontium Titanate, Magnesium, Non-Aqueous Gel-Casting, Rheological Property

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