Preparation method of barium titanium silicate crystal

A barium silicate and crystal technology is applied in the field of preparation of barium and titanium silicate crystals, which can solve the problems of inability to purchase crystals in the market, high requirements, and difficulty in realization.
CN101974778AInactive Publication Date: 2011-02-16XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
Publication Date
2011-02-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method of a barium titanium silicate crystal, comprising the following steps of: heating the mixed system of the barium titanium silicate and a fluxing agent LiF and H3BO3 or B2O3, making the mixed system at the constant temperature and cooling to obtain a mixed solution; then putting a seed crystal into the mixed solution for cooling to prepare the crystal with the big dimensions of 1-100mm*1-100mm*1-100mm. The crystal prepared by the method belongs to a tetragonal system. The space group of the crystal is P4bm, the chemical formula of the crystal is Ba2TiSi2O8, the cell parameter of the crystal is shown as follows: a=b=8.518+ / -0.002c=5.211+ / -0.002Z=4, and the Moh's hardness of the crystal is 4-5. The method has high preparation speed and low cost and is simple to operate; and the obtained crystal has the advantages of big dimensions, good mechanical behavior, stable physical and chemical properties and the like, is free of deliquescence and is easy to process and store.
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Description

technical field

[0001] The invention relates to a method for preparing barium titanium silicate crystals, in particular to a method for growing molten salt seed crystals of barium titanium silicate crystals. Background technique

[0002] After decades of hard work by scientists from various countries, many crystals have been discovered, and some crystals have been used in practice, such as: KTP, low-temperature phase BBO, LBO, etc. crystals. Based on the above reasons, scientists from all over the world are still paying close attention to the exploration and research of various new crystals, not only focusing on the optical and mechanical properties of crystals, but also paying more and more attention to the preparation characteristics of crystals. It is hoped that new crystal materials can be easily prepared, so that they can be obtained Inexpensive large size high quality crystals.

[0003] Scientist J.T.Alfors et al first reported barium titanium silicon oxide Ba in 196...

Claims

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