Yttria-Coated Tungsten Fibers for Use in Tungsten Fiber-Reinforced Composites: A Comparative Study on PVD vs. CVD Routes

Author:

Palaniyappan SaravananORCID,Trautmann MaikORCID,Mao Yiran,Riesch Johann,Gowda Parikshith,Rudolph Nick,Coenen Jan WillemORCID,Neu Rudolf,Wagner GuntramORCID

Abstract

Tungsten fiber-reinforced tungsten (Wf/W) composites are being developed to improve the intrinsic brittleness of tungsten. In these composites, engineered fiber/matrix interfaces are crucial in order to realize toughening mechanisms. For such a purpose, yttria (Y2O3), being one of the suitable interface materials, could be realized through different coating techniques. In this study, the deposition of thin films of yttria on a 150 µm tungsten wire by physical and chemical vapor deposition (PVD and CVD) techniques is comparatively investigated. Although fabrication of yttria is feasible through both CVD and PVD routes, certain coating conditions such as temperature, growth rate, oxidation of Wf, etc., decide the qualitative nature of a coating to a particular extent. In the case of PVD, the oxidation of Wf is highly reduced compared to the WO3 formation in high-temperature CVD coating processes. Yttria-coated tungsten fibers are examined comprehensively to characterize their microstructure, phase, and chemical composition using SEM, XRD, and Raman spectroscopy techniques, respectively.

Funder

UK Atomic Energy Authority

Publisher

MDPI AG

Subject

Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces

Cited by 4 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Microstructure and mechanical properties of Wf/W composites influenced by Y2O3 coating;International Journal of Refractory Metals and Hard Materials;2023-09

2. Bulk Tungsten Fiber-Reinforced Tungsten (Wf/W) Composites Using Yarn-Based Textile Preforms;Journal of Nuclear Engineering;2023-05-04

3. Nanocomposites Thin Films: Manufacturing and Applications;Nanocomposite Materials for Biomedical and Energy Storage Applications;2022-11-02

4. Materials to Be Used in Future Magnetic Confinement Fusion Reactors: A Review;Materials;2022-09-22

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