X.; Kahlenberg, V.; Voll, D.; MacKenzie, K. J. D.; Smith, M. E.; Schnetger, B.; Brumsack, H. J.; Schneider, H.: Crystal struc- ture of synthetic Al4B2O9: A member of the mullite family closely related to boralsilite. American Mineralogist 93 (2008) 918-927....
Crystal chemistry and properties of mullite-type Bi2M... Bi2M4O9 (M = Al3+, Ga3+, Fe3+) belongs to the family of mullite-type crystal structures. The phases are orthorhombic with the space group Pbam. The backbon... H Schneider,RX Fischer,TM Gesing,... - 《Cheminform》 被引量:...
The Al2O3 and SiO2 contents, echoing those of porcelain stone that features low aluminum and high silicon in southern China, the XRD image show that the main crystalline component of the body of Sample TC-4 is mullite (Fig. 4a), which are commonly found in the bodies fired at high ...
The first is a dendritic leave-like shaped crystal spreading from the surface over several hundred of nanometers inside the glaze. These crystals look quite similar to the ones organized as a 2D dentritic network at the surface of the glaze. The second type consists of smaller crystals with ...
In the synthesis of specialty zeolites in general, seed crystals are often used as nucleating agents for improving the rate of crystallization, as well as for influencing the size and morphology of the resulting crystals. These, however, need not necessarily be the of same type of zeolite as ...
The infrared spectrum of a mineral is a characteristic feature, which permits the identification of mineral species. The absorption bands arise from vibrations of the atoms or ions in the structure, and the frequencies of vibrations are dependent on the
(Fig.4g), and excessive amounts of ZrO2can have an adverse effect on the cells' wound-healing ability. Hmelov [130] synthesized and studied the properties of SPSed mullite-SiAlON-ZrB2materials. The authors observed that increasing the SiAlON concentration impaired sinterability and worsened the ...
Crystal chemistry and properties of mullite-type Bi2M... Bi2M4O9 (M = Al3+, Ga3+, Fe3+) belongs to the family of mullite-type crystal structures. The phases are orthorhombic with the space group Pbam. The backbon... H Schneider,RX Fischer,TM Gesing,... - 《Cheminform》 被引量:...
A low temperature firing glass-ceramic substrate comprising a borosilicate glass, α-alumina, γ-alumina, and mullite crystals crystallized out in a dispersed form from the borosilicate glass and the γ-alumina, and a production process of the substrate. It is an object of this invention to prov...
3.3. Crystal Structures After applying Rietveld refinement to TOF neutron diffraction patterns, the crystal structures of Al2O3 and AT in the stress-free reference powders and A–AT composites were obtained. Table 3 summarizes the average values of refined lattice parameters of α-Al2O3 (𝑎a...