The ZnO pellet is polycrystal or monocrytal.
Disclosed in the present invention is a Huperzine A polycrystal, preparation method therefor, a pharmaceutical composition comprising the polycrystal and the use thereof.
This optical component comprises a ZnSe polycrystal.
The purpose of the present invention is to provide: a stishovite sintered polycrystal having high hardness and high toughness; and a method for producing the stishovite sintered polycrystal.
Consequently, a low-cost silicon polycrystal for solar cells can be produced by such a method and apparatus.
It is covered with Polycristal, white and translucent.
The second layer is formed under film forming conditions for obtaining a layer containing polycrystal which contains rutile type crystal when the layer is directly formed on the substrate.
The binder phase contains at least one metal phase that is selected from among Co, Ni, NiCr and CoCr, has a structure of a metal polycrystal, and is directly bonded to a metal base.
A stishovite sintered polycrystal can be produced by heating a mass of silicon dioxide glass at 1000 to 1400˚C under a pressure of 12 to 16 GPa.
For reducing the cracking at the long growing time of the ingot, it is necessary to suppress the deposition of a polycrystal or a different-plane orientation crystal on the periphery of the single crystal.
In the single-crystal manufacturing apparatus, a material polycrystal contained the crucible is melted by a heater, and the seed crystal is made to contact the molten polycrystal and is lifted.
Thus, the single-crystal manufacturing apparatus can shorten the melting time period of the polycrystal thereby to shorten the cycle time and to reduce the production cost and the power cost.
The method can be adapted for single crystal or poly crystal silicon slice, and can cover the shortage of high reflectivity of velvet made from acid etching poly crystal.
An AlN polycrystal (3) is deposited on a surface of an SiO2 film (2) by a sputtering method, so that a mask is formed thereon.
Conference about DIGIMU® 3.0 : First commercial software for modelling metallic polycristal evolutions during thermomechanical material forming processes.
The electromagnetic effect material according to the present invention is formed by an oxide ceramic comprising a polycrystal containing at least Sr, Co, and Fe as main components.
A method and apparatus for growing a crystalline or poly-crystalline body from a melt is described, wherein the melt is retained by capillary attachment to edge features of a mesa crucible.
Conference about DIGIMU® 3.0 : First commercial software for modelling metallic polycristal evolutions during thermomechanical material forming processes.
The ZnSe polycrystal is characterized by being constituted by crystal grains having an average grain size of 50μm to 1mm inclusive, and by having a relative density of at least 99%.
Therefore, the invention grows continuously only the extremely limited number of abnormal grains or only the seed single crystal into the polycrystalline body to obtain a large single crystal having a size larger than 50mm.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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