Solution combustion derived nanocrystalline macroporous wollastonite ceramics

Solution combustion derived nanocrystalline Zn(2)SiO(4):Mn phosphors: a spectroscopic view.

Manganese doped nanocrystalline willemite powder phosphors Zn(2-x)Mn(x)SiO(4) (0.1<or=x<or=0.5) have been synthesized by a low-temperature initiated, self-propagating, gas producing solution combustion process. The phosphors have been characterized by using x-ray diffraction (XRD), energy dispersive spectroscopy, scanning electron microscopy, Fourier transform infrared spectroscopy (FTIR), elec...

The In Vitro Bioactivity, Degradation, and Cytotoxicity of Polymer-Derived Wollastonite-Diopside Glass-Ceramics

Ca-Mg silicates are receiving a growing interest in the field of bioceramics. In a previous study, wollastonite-diopside (WD) glass-ceramics were successfully prepared by a new processing route, consisting of the heat treatment of a silicone resin embedding reactive oxide particles and a Ca/Mg-rich glass. The in vitro degradation, bioactivity, and cell response of these new WD glass-ceramics, f...

Uniform Macroporous Ceramics and Plastics by Emulsion Templating *

Macroporous materials with uniform pore sizes in the range from 50 nm to 10 mm are predicted to have unique and highly useful properties as optical devices, specifically for use as photonic crystals with optical bandgaps. Moreover, the ability to control pore size and uniformity could produce improved filters, membrane supports, catalytic materials, and adsorbents. Nevertheless, until very rece...

pharmaceutical application of nanocrystalline piezoelectric ceramics

Processing and Characterization of Nanocrystalline Mica Glass-Ceramics

In order to fabrication of transparent glass-ceramics with Li-mica nano crystals, the glasses with chemical composition of 94.9 mass% Li(1+x)Mg3AlSi3(1+x)F2 (x=0.5) with 5.1 mass% MgF2 were crystallized. The glasses were fabricated via the conventional melt-quenching technique. Mica crystals were precipitated in the glass phase by later heat treatment. Glass samples had glass transition tempera...