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Ytterbium fluoride mixed coating material and preparation method thereof

A mixed coating and ytterbium fluoride technology, which is applied in metal material coating process, sputtering coating, vacuum evaporation coating, etc., can solve problems such as uneven coating of ytterbium fluoride, microscopic unevenness, and microscopic unevenness , to achieve the effect of improving anti-cracking performance, good light transmission and preventing shedding

Active Publication Date: 2020-08-28
南京睿扬光电技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the growth of crystals has a certain directionality, for example, in the process of freezing water, it usually grows in a specific direction first, which usually leads to the microscopic inhomogeneity of the formed film. This microscopic inhomogeneity, in Stress will be formed when multi-layer coating is applied, resulting in film cracking
Therefore, it is necessary to study a mixed coating material of ytterbium fluoride to overcome the uneven defect of ytterbium fluoride coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A ytterbium fluoride mixed coating material, in parts by weight, mainly comprises: 60 parts of ytterbium fluoride, 5 parts of calcium fluoride, 12 parts of potassium tetratitanate and 10 parts of tin dioxide.

[0030] A preparation method of a ytterbium fluoride mixed coating material, the preparation method of the ytterbium fluoride mixed coating material mainly comprises the following preparation steps:

[0031] (1) After washing the quartz substrate with acetone, ethanol and water for 3 to 5 times respectively, the washed quartz substrate and the mixed sol were mixed and immersed in a mass ratio of 1:8, the quartz substrate was taken out, and the temperature was 250 ° C. Dry under conditions for 40min to obtain pretreated quartz substrate;

[0032] (2) Mix ytterbium fluoride and calcium fluoride in a mass ratio of 12:1, add titanium dioxide with a mass of 0.8 times the calcium fluoride, and sinter for 5 hours at a temperature of 1250°C to obtain a mixture. The tempe...

Embodiment 2

[0038] A ytterbium fluoride mixed coating material, in parts by weight, mainly comprises: 60 parts of ytterbium fluoride, 5 parts of calcium fluoride, 8 parts of potassium acetate and 10 parts of tin dioxide.

[0039] A preparation method of a ytterbium fluoride mixed coating material, the preparation method of the ytterbium fluoride mixed coating material mainly comprises the following preparation steps:

[0040] (1) After washing the quartz substrate with acetone, ethanol and water for 3 to 5 times respectively, the washed quartz substrate and the mixed sol were mixed and immersed in a mass ratio of 1:8, the quartz substrate was taken out, and the temperature was 250 ° C. Dry under conditions for 40min to obtain pretreated quartz substrate;

[0041] (2) Mixing ytterbium fluoride and calcium fluoride in a mass ratio of 12:1, sintering at a temperature of 1250°C for 5 hours to obtain a mixture, and melting the mixture at a temperature above 1300°C to obtain a mixed coating ma...

Embodiment 3

[0047] A ytterbium fluoride mixed coating material, in parts by weight, mainly comprises: 60 parts of ytterbium fluoride, 5 parts of calcium fluoride, and 12 parts of potassium tetratitanate.

[0048] A preparation method of a ytterbium fluoride mixed coating material, the preparation method of the ytterbium fluoride mixed coating material mainly comprises the following preparation steps:

[0049](1) After washing the quartz substrate with acetone, ethanol and water for 3 to 5 times, the washed quartz substrate and potassium acetate solution were mixed and immersed in a mass ratio of 1:8, the quartz substrate was taken out, and the temperature was 250 ° C. Dry for 40min under the conditions of pretreatment to obtain the pretreated quartz substrate;

[0050] (2) Mix ytterbium fluoride and calcium fluoride in a mass ratio of 12:1, add titanium dioxide with a mass of 0.8 times the calcium fluoride, and sinter for 5 hours at a temperature of 1250°C to obtain a mixture. The temper...

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Abstract

The invention discloses an ytterbium fluoride mixed coating material and a preparation method thereof, and relates to the field of ytterbium fluoride mixed materials. The preparation method comprisesthe following steps: firstly, washing a quartz substrate, immersing the quartz substrate into tin dioxide sol containing potassium acetate, filtering and drying after the dipping to obtain a pretreated quartz substrate, mixing ytterbium fluoride with calcium fluoride, adding titanium dioxide, mixing and sintering, melting to obtain a mixed coating material, carrying out vacuum coating on the surface of the pretreated quartz substrate with the mixed coating material in a coating machine to obtain an ytterbium fluoride mixed coating material blank, and sintering the ytterbium fluoride mixed coating material blank to obtain the ytterbium fluoride mixed coating material. The ytterbium fluoride mixed coating material prepared by the invention has excellent anti-cracking performance, and has less influence on the optical refractive index of ytterbium fluoride.

Description

technical field [0001] The invention relates to the field of ytterbium fluoride mixed materials, in particular to a ytterbium fluoride mixed coating material and a preparation method thereof. Background technique [0002] In the field of optical coating, ytterbium fluoride is a commonly used infrared optical coating material with low refractive index. Due to its good infrared transmission performance and high film strength, it is often used for antireflection coatings for germanium and chalcogenide infrared glass. During the film formation, due to the deposition of ytterbium fluoride on the surface of the optical element, it is also recrystallized on the optical surface. Since the growth of crystals has a certain direction, for example, in the process of freezing water, it usually grows in a specific direction first, which usually leads to the microscopic non-uniformity of the formed film. When multiple layers are deposited, stress is created, which can lead to film crackin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/22C03C17/23C23C14/06C23C14/24
CPCC03C17/008C03C17/22C03C17/23C23C14/06C23C14/24C03C2218/13C03C2218/113C03C2217/228C03C2217/285C03C2217/29Y02E10/52
Inventor 王琦王征
Owner 南京睿扬光电技术有限公司
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