通过水热纳米粉体低温制备氧化锆透明陶瓷

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2024-09-20 DOI:10.1016/j.ceramint.2024.09.263

Du Zhou , Chaozheng Ding , Weijie Han , Huibing Li , Haitao Zhang , Wentao Xu , Youfu Zhou

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引用次数: 0

摘要

通过水热均相沉淀（HHP）法合成了 8 mol% 钇稳定立方氧化锆（8YSZ）的高烧结性纳米粉体。该纳米粉体的平均粒径为 26 nm，具有分散性好、粒度分布窄和纯度高等特点，是制备透明陶瓷的理想原料。与热等静压（HIP）相比，利用温和条件下（1200-1350°C、80 兆帕、10 分钟）的火花等离子烧结（SPS），制备出了具有良好光学和机械性能的立方氧化锆陶瓷。在 1250°C 下烧结的样品透射率最高，达到 74%@850 nm，大大超过了用另外两种商用 8YSZ 粉末制备的样品。此外，在 1200°C 下烧结的样品具有致密精细的微观结构（相对密度：99.51%，晶粒大小：460 nm），硬度和断裂韧性最高，分别达到 15.72 GPa 和 1.28 MPa-m1/2。

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Low-temperature fabrication of zirconia transparent ceramics via hydrothermal nanopowder

Highly sinterable nanopowder of 8 mol% yttria-stabilized cubic zirconia (8YSZ) was synthesized via a hydrothermal homogeneous precipitation (HHP) method. The nanopowder with an average particle size of 26 nm, exhibits good dispersibility, narrow particle size distribution and high purity, making it ideal raw material for preparing transparent ceramics. Utilizing spark plasma sintering (SPS) under mild conditions (1200–1350 °C, 80 MPa, 10 min) in contrast to hot isostatic pressing (HIP), cubic zirconia ceramics with favorable optical and mechanical properties were produced. The sample sintered at 1250 °C achieved the highest transmittance of 74 %@850 nm, significantly surpassing the performance of samples prepared from two other commercial 8YSZ powders. Furthermore, the specimen sintered at 1200 °C with a dense fine microstructure (relative density: 99.51 %, grain size: 460 nm), demonstrated the highest hardness and fracture toughness, reaching 15.72 GPa and 1.28 MPa m^1/2, respectively.

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.