High-density irradiation-resisting fast flash inorganic glass

A fast flash inorganic glass used as flashing material of detector in high-energy physical experiment and tomographic camera contains Pb and Bi ion oxides as main components and glass-forming oxide. Its density value is up to 7.5-8.1 g/cu.cm and there is no change in transmittance after and before it is irradiated by Co 60 under 10 to the power 6 rads. The emission peak wavelength is 395-650 nm and decay time is less than 50 ns for the fluorescence generated by excited the glass.

Method for preparing alpha-alumina particles with nanometers size

Process for preparing superfine alpha-Al2O3 particles in nm grade, which is necessary in electronic and ceramic industries uses aluminium salt as raw material. Its technological steps include addition of additive to form sol, addition of high polymer or its monomer, cross-linking agent or initiator to form gel of high polymer at a certain temp., and heat treatment at 1200 deg.C to obtain 10-50nm of alpha-A2O3 particles.

METHOD FOR PREPARING SUPERFINES

In the vaccum and inert gas of tubular high-temp reactor, metallic vapour, halide, hydride or organic metal compound as material is heated and reacted chemically into particles, which are sharply cooled and pumped into powder collector of superfines. The said metallic vapour is Ag, Ni or Cu vapour, halide is CH3SiCl3, SiCl4 hydride is SiH4, C2H4, CH4 or NH3; and organic metal compound is LiOC2H5, Ba(OC2H5)2 or Cu(OC2H5)2. The said method produces nanometer-level stoichiometrical beta-SiC superfines with particle size less than 100 angstroms.

Process for preparing nm stage alpha-Al2O3 granule

Method for preparing tube type nm superfine particles

In the vaccum and inert gas of tubular high-temp reactor, metallic vapour, halide, hydride or organic metal compound as material is heated and reacted chemically into particles, which are sharply cooled and pumped into powder collector of superfines. The said metallic vapour is Ag, Ni or Cu vapour, halide is CH3SiCl3, SiCl4 hydride is SiH4, C2H4, CH4 or NH3; and organic metal compound is LiOC2H5, Ba(OC2H5)2 or Cu(OC2H5)2. The said method produces nanometer-level stoichiometrical beta-SiC superfines with particle size less than 100 angstroms.

Method for producing aluminium oxide base nano complex phase ceramics

The nm-class double-phase ceramic is made of alpha-Al2O3 powder (65-99.5 Vol%) and 0.1-2 micrometers diameter in average and C powder (35-0.5 Vol.%) and 5-100 nm diameter in average. It is electrically conductive with ordinary-temp. resistivity of 0.1-1000 omegaM.

Liquid crystal hight valve by using transitional modified structure non-crystal silicon photosensitive layer

The said liquid crystal light valve has no opaque layer, and both the receiption of optical write-in signal and the absorption of interference light are completed by photosensitive layer. The said photosensitive layer is a semiconductor material of a -Si:H noumenon structure modified in the thickness direction. The said photosensitive layer may produce quasi p-n or p-i juction effect and obvious photo-capacitance so that its resolution limit controlled by carrier diffusion may be raised.

Liquid crystal light valve using non-crystal silicon light sensitive layer with modified transition structure

Ceramic material with adjustable thermal expansion coefficient

The NZP ceramic with adjustable expansion coefficient is made up of powdered apatite (14-46 Wt.%), zircon powder (16-50 Wt.%), ZrO2 (15-32 Wt%) and H3PO4 (20-38 Wt.%) through sinter and features low cost combination of synthesizing and sintering for saving energy consumption, and no pollution.