Tungsten trioxide, as an infrared ultraviolet shielding material, has the advantages of good weather resistance, high heat insulation, and long service life.
Crystal Structure of Tungsten Trioxide
The crystal structure of tungsten trioxide is very complex, although its composition is simple from the view of stoichiometric ratio. The triclinic crystal structure of tungsten trioxide was measured by neutron powder diffraction technology. And it was compared with the monoclinic crystal structure of tungsten trioxide. The results show that, for the ideal distorted octahedron, the monoclinic and triclinic phases of tungsten trioxide are the same except that the projection of (001) is different. In both crystal phases, all tungsten atoms are displaced from their position in the center of the octahedron to one side of the octahedron in the same manner. Thus, each tungsten atom has two short, two medium and two long tungsten-oxygen bonds. And the average length of tungsten-oxygen bonds is essentially the same for both crystal phases.
More details, please visit:
http://www.tungsten-powder.com/Tungsten-Trioxide.html
