Pre-melted high-refractive-index optical coating material as well as preparation method and application thereof

An optical coating and high refractive index technology, applied in chemical instruments and methods, inorganic chemistry, sputtering coating, etc., can solve problems such as poor consistency of production batches and unstable performance of optical films, and achieve dense film layers and high performance Consistent, high transmittance results

Active Publication Date: 2021-08-03
有研资源环境技术研究院(北京)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at problems such as the unstable performance of the prepared optical film and the poor consistency of production batches existing in the current high refractive index materials, and proposes a new high refractive index optical coating and its preparation method

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  • Pre-melted high-refractive-index optical coating material as well as preparation method and application thereof
  • Pre-melted high-refractive-index optical coating material as well as preparation method and application thereof
  • Pre-melted high-refractive-index optical coating material as well as preparation method and application thereof

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preparation example Construction

[0037] Embodiments of the present invention provide a pre-melted high refractive index optical coating material and a preparation method thereof. It mainly includes the following steps: using TiO 2 、Pr 6 o 11 and Ti powder as raw materials, according to a certain ratio of mechanical mixing and then briquetting, and then solid-phase synthesis and melting under high temperature vacuum, crystallization in a vacuum state and cooling to room temperature to generate a new compound Pr 5 Ti 5 o 17 . The compound maintains a stable chemical composition during the evaporation process, and can form a very smooth evaporation surface during pre-melting, which is beneficial to the process control of the coating process. The optical film layer plated with this material has high transmittance in the near ultraviolet to near infrared band. The film layer is dense, firm, and chemically stable. It can be used as a high-quality high-refractive index material for optical film system design an...

Embodiment 1

[0072] According to the ratio of raw materials TiO 2 26% (wt.), Pr 6 o 11 71% (wt.), Ti 2.5% (wt.) were accurately weighed, mechanically mixed with a stirring mixer for 8 hours, and the mixed powder was mixed at 400N / cm by a hydraulic press 2 Under the pressure of briquette and furnace, the heating rate of the furnace is 5°C / min in the vacuum state, and the temperature is 2000°C, the vacuum degree is 2×10 -1 The solid-phase synthesis reaction was carried out under the condition of Pa for 8 hours, and cooled to room temperature under vacuum. The material prepared by this method is a black molten material (its appearance is shown in figure 2 As shown, the density of the material tested by the drainage method is 5.4g / cm 3 .

[0073] image 3 The XRD pattern of the praseodymium titanate fused granular material prepared in Example 1 of the present invention is shown. Depend on image 3 It can be seen that the praseodymium titanate obtained by this method is a single-phas...

Embodiment 2

[0079] According to the ratio of raw materials TiO 2 25% (wt.), Pr 6 o 11 72% (wt.), Ti 3% (wt.) were accurately weighed, mechanically mixed with a stirring mixer for 8 hours, and the mixed powder was mixed at 400N / cm by a hydraulic press 2 Under the pressure of briquette and furnace, the heating rate of the furnace is 5°C / min in a vacuum state, and the temperature is 1900°C and the vacuum degree is 2×10 -1 The solid-phase synthesis reaction was carried out under the condition of Pa for 8 hours, and cooled to room temperature under vacuum. The material prepared by this method is a black molten material (its appearance is shown in Figure 6 shown), the density of the material tested by the drainage method is 5.4g / cm 3 .

[0080] When using, the material is fully pre-melted first, and the material is pre-melted in a water-cooled oxygen-free copper crucible. The pre-melting temperature is 2200 ° C. There is no splashing during the pre-melting process, and the surface of th...

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Abstract

The invention provides a pre-melted high-refractive-index optical coating material as well as a preparation method and application thereof, and belongs to the field of optical thin film materials. The high-refractive-index optical coating material is praseodymium titanate, and the chemical formula of the high-refractive-index optical coating material is Pr5Ti5O17. In addition, the praseodymium titanate is prepared by taking TiO2, Pr6O11 and Ti powder as raw materials through a solid-phase synthesis reaction. The praseodymium titanate prepared by the preparation method provided by the invention keeps stable chemical composition in the evaporation process, can form a very flat evaporation surface during pre-melting, and is beneficial to process control in the coating process. Moreover, an optical film layer plated by adopting the praseodymium titanate disclosed by the invention has relatively high transmittance from a near ultraviolet band to a near infrared band, and meanwhile, the film layer is compact, firm and stable in chemical property, and can be used as a high-quality high-refractive-index material to be applied to optical film system design and batch film plating production.

Description

technical field [0001] The invention relates to the technical field of optical thin film materials, and mainly relates to a pre-melted high refractive index optical coating material and its preparation method and application. Background technique [0002] Among the optical coating materials, the selection of high refractive index materials that can be used for electron beam evaporation is very limited. Most of the high refractive index materials are oxides of titanium, zirconium, hafnium, tantalum, niobium and their mixtures or oxides with other metals. mixture of substances. In this technical field, coating with a mixture can change the refractive index of a single oxide optical film layer, expand the selection range of materials for optical film system design, and improve the stress and other characteristics of the film. [0003] However, due to the different melting points and vapor pressures of the components in these mixture materials, if the components or proportions ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/00C23C14/08C23C14/30
CPCC01G23/003C23C14/08C23C14/30C01P2006/10C01P2006/34C01P2006/60
Inventor 张碧田石志霞彭程孙静段华英张恒王星明
Owner 有研资源环境技术研究院(北京)有限公司
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