Articles
  • Characterization of anorthite-based porcelain prepared by using wollastonite as a calcium source
  • Shumei Wanga,*, Xiaoling Qib, Jilin Hua and Xiuying Tiana
  • a Hunan Institute of Humanities, Science and Technology, Loudi 417001, China b Energy Strategy Research Center, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510540, China
Abstract
The porcelain based on anorthite (CaO • Al2O3 • 2SiO2) has been developed using wollastonite (CaO • SiO2) as a calcium source. The slip casting was applied to obtain green body with high-strength. The sintering behaviors of the green specimens were evaluated by determining linear shrinkage, water absorption, bulk density and flexural strength. It was found that the anorthite porcelain fired at 1215 oC had excellent technical properties such as water absorption: 0.00% and flexural strength: 109.5MPa. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis results showed the high flexural strength was due to the densification of microstructures and the formation of high crystalline content in the porcelain body. In addition, thermal expansion performance and appearance quality of the final product were discussed.

Keywords: Anorthite, Porcelain, Wollastonite, Calcium source.

This Article

  • 2015; 16(3): 361-365

    Published on Jun 30, 2015