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Compound rubidium sodium chloroborate, and rubidium sodium chloroborate optical crystal and preparation method and application thereof

A technology of sodium rubidium chloroborate and optical crystals, which is applied in chemical instruments and methods, boron halide compounds, optics, etc., and can solve problems such as high price, long growth cycle, and deliquescent crystals

Active Publication Date: 2016-02-17
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the crystal growth technology of these materials has become increasingly mature, there are still obvious shortcomings: such as crystal deliquescence, long growth cycle, serious layered growth habit and expensive price, etc.

Method used

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  • Compound rubidium sodium chloroborate, and rubidium sodium chloroborate optical crystal and preparation method and application thereof
  • Compound rubidium sodium chloroborate, and rubidium sodium chloroborate optical crystal and preparation method and application thereof
  • Compound rubidium sodium chloroborate, and rubidium sodium chloroborate optical crystal and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] According to the reaction formula: Rb 2 CO 3 +Na 2 CO 3 +2NaCl+12H 3 BO 3 →2RbNa 2 B 6 o 10 Cl+18H 2 O↑+2CO 2 ↑Synthesis of RbNa 2 B 6 o 10 Cl compounds:

[0061] Rb 2 CO 3 、Na 2 CO 3 , NaCl, H 3 BO 3 Weigh the raw materials at a molar ratio of 1:1:2:12, put them into a mortar, mix and grind carefully, then put them into a Φ100mm×100mm open corundum crucible, put them into a muffle furnace, and slowly raise the temperature to 350°C, Keep the temperature for 24 hours, cool to room temperature, take it out and put it into the muffle furnace after the second grinding, then raise the temperature to 500°C, keep the temperature for 24 hours, cool to room temperature, take it out and put it into the muffle furnace after the third grinding, Then raise the temperature to 650°C, keep the temperature for 72 hours, take out and grind the single-phase polycrystalline powder of rubidium sodium chloroborate compound, and then carry out X-ray analysis on the product,...

Embodiment 2

[0068] According to the reaction formula: Rb 2 O+Na 2 CO 3 +2NaCl+12H 3 BO 3 →2RbNa 2 B 6 o 10 Cl+18H 2 O↑+CO 2 ↑Synthesis of RbNa 2 B 6 o 10 Cl compounds:

[0069] Rb 2 O, Na 2 CO 3 , NaCl, H 3 BO 3 Weigh the raw materials directly according to the molar ratio of 1:1:2:12, and combine the weighed raw materials with the flux H 3 BO 3 -Na 2 O is mixed at a molar ratio of 1:4, where H 3 BO 3 with Na 2 The molar ratio of O is 3:1, put it into an open platinum crucible of Φ80mm×80mm, heat up to a temperature of 780°C, and keep the temperature for 20 hours to obtain a mixed melt;

[0070] Then lower the temperature of the mixed melt to 750°C. At this time, the seed rod is quickly inserted into the liquid surface, and the temperature is slowly lowered to 650°C at a rate of 0.5°C / h, and the seed rod is lifted out of the liquid surface. There are aggregates, and then the temperature is lowered to room temperature at a rate of 10°C / h to obtain rubidium sodium chl...

Embodiment 3

[0075] According to the reaction formula: Rb 2 CO 3 +Na 2 CO 3 +2NaCl+6B 2 o 3 →2RbNa 2 B 6 o 10 Cl+2CO 2 ↑Synthesis of RbNa 2 B 6 o 10 Cl compounds:

[0076] Rb 2 CO 3 、Na 2 CO 3 , NaCl and B 2 o 3 Weigh the raw materials directly according to the molar ratio of 1:1:2:6, and combine the weighed raw materials with flux Na 2 O-PbO is mixed at a molar ratio of 1:3, where Na 2 The molar ratio of O to PbO is 1:2, put it into a Φ80mm×80mm open platinum crucible, heat up to 750°C, and keep the temperature for 20 hours to obtain a mixed melt;

[0077] Lower the temperature of the mixed melt to 730°C. At this time, quickly extend the seed rod under the liquid surface, slowly lower the temperature to 630°C at a rate of 5°C / h, and lift the seed rod out of the liquid surface. There will be Aggregates, and then lowered to room temperature at a rate of 8°C / h to obtain sodium rubidium chloroborate seed crystals;

[0078] Crystal growth in compound melts: RbNa will be ob...

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Abstract

The invention relates to a compound rubidium sodium chloroborate, and a rubidium sodium chloroborate optical crystal and apreparation method and application thereof. The compound rubidium sodium chloroborate has a chemical formula of RbNa2B6O10Cl and a molecular weight of 391.76, and is synthesized by using a solid phase reaction method. The rubidium sodium chloroborate optical crystal has a chemical formula of RbNa2B6O10Cl and a molecular weight of 391.76, belongs to a orthorhombic crystal system and is located in space group P2<1>2<1>2<1>; cell parameters of the optical crystal are that a is equal to 8.3251(3) angstroms, b is equal to 9.6543(3) angstroms, c is equal to 12.7544(4) angstroms, Z is equal to 4, and V is equal to 1025.11(6) angstroms<3>; and the transmittance band of the optical crystal is in a range of 190 nm to 2600 nm. The rubidium sodium chloroborate optical crystal is grown by using a high temperature molten liquid method, has moderate mechanical hardness, and is easy to cut, polish, process and store, not soluble in water or prone to deliquescence, stable in the air and applicable to manufacturing optical devices like windows, lenses and prisms, e.g., windows, head-shields, fairings or the like used in infrared detectors and aircrafts; convex lenses used in microscopes and telescopes; and prisms used in periscopes, binoculars and the like for changing the heading direction of light.

Description

technical field [0001] The invention relates to compound rubidium sodium chloroborate RbNa 2 B 6 o 10 Cl and sodium rubidium chloroborate optical crystal, a preparation method and an optical device made by using the crystal. Background technique [0002] Borates are notable for their structural diversity, the simple planar BO 3 Matching and Tetrahedral BO 4 The matching can present a variety of structures through different connection methods. The various structures provide a good material basis for various properties, such as larger birefringence, larger nonlinear effects, higher fluorescence luminous efficiency and Stability and many other special properties. The characteristic of borate is that it is conducive to the transmission of ultraviolet radiation. Many excellent optical crystals have been found in borate, such as α-BBO, β-BBO (BBO), LiB 3 o 5 (LBO) crystal, CsB 3 o 5 (CBO) crystal, CsLiB 6 o 10 (CLBO) crystals and KBe 2 BO 3 f 2 (KBBF) crystals. Alth...

Claims

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Application Information

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IPC IPC(8): C30B29/10C30B15/00C01B35/06G02B1/02
Inventor 潘世烈白春燕韩树娟
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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