Preparation method of high-refractive-index high-optical-quality Y3TaO7 transparent ceramic

High-density transparent Y3TaO7 ceramics were prepared by ball milling and vacuum sintering, which solved the light scattering problem caused by internal pores and achieved high optical quality Y3TaO7 ceramics with broad application prospects.

CN122403984APending Publication Date: 2026-07-17NINGBO UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NINGBO UNIV
Filing Date
2026-05-14
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies make it difficult to prepare high-optical-quality Y3TaO7 transparent ceramics, mainly because internal pores cause light scattering, which affects the material's properties.

Method used

High-density Y3TaO7 transparent ceramics were prepared by using Y2O3 powder and Ta2O5 powder as raw materials, adding aluminum nitrate nonahydrate as a sintering aid, and through ball milling, cold isostatic pressing and vacuum sintering.

Benefits of technology

Y3TaO7 transparent ceramics with high transmittance and high refractive index have been developed, possessing excellent optical properties and suitable for the energy and aerospace fields.

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Abstract

本发明涉及一种高折射率高光学质量Y3TaO7透明陶瓷的制备方法。以Y2O3粉体与Ta2O5粉体为原料，按摩尔比3:1配料，加入一定掺量的九水合硝酸铝，以无水乙醇为介质球磨混料，烘干后在氧气气氛下煅烧得到煅烧产物；经预压、冷等静压成型后进行真空高温烧结，再经空气气氛退火与打磨抛光，制得Y3TaO7透明陶瓷。本发明工艺简单、成本较低，所制陶瓷致密度高、透过率优良，折射率可达2.0以上，适用于高端光学器件领域。
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