High‐Thermal‐Expansion Polycrystalline Leucite Ceramic
1993; Wiley; Volume: 76; Issue: 9 Linguagem: Inglês
10.1111/j.1151-2916.1993.tb07782.x
ISSN1551-2916
AutoresToshitaka Ota, Minoru Takahashi, Iwao Yamai, Hisao Suzuki,
Tópico(s)Polymer Nanocomposites and Properties
ResumoA high‐thermal‐expansion ceramic consisting of leucite crystals was prepared by sintering leucite powder. The densification was promoted by adding Li 2 CO 3 or Na 2 CO 3 . The leucite ceramic obtained had a thermal expansion coefficient of about 2.4 × 10 −5 /°C from room temperature to 600°C. Some of the Li + and Na + ions were incorporated into the leucite crystal lattice to form solid solutions, and the characteristic tetragonal‐cubic inversion point shifted from ca. 600° to 650°C.
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