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Advanced Multifunctional Materials under High Temperature and High Pressure

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Materials Physics".

Deadline for manuscript submissions: 20 October 2024 | Viewed by 549

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School of Nuclear Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China
Interests: nuclear fuels; thermomechanical analysis; irradiation effects; corrosion; microstructural evolution
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Special Issue Information

Dear Colleagues,

Under extreme conditions, such as those of high temperature and high pressure, engineering materials are frequently required to perform multiple functions. Maintaining good electrical conductivity, possessing high strength and hardness, facilitating catalysis functions and sustaining nuclear reactions, etc., are some of the imminent demands from traditional and emerging engineering fields. Consequently, it is necessary to evaluate the performance of these materials in serving the multi-ended needs and provide mechanistic-level understandings to progressively address the increasingly harsh requirements.

The aim of this Special Issue is to provide a platform for researchers to share their original research outcomes and to contribute to the outstanding collection of reviews and experimental, numerical and technical studies on the performance of multi-functional materials under high temperatures and high pressures.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  • Nuclear fuels and structural materials under high temperatures and high pressures;
  • Performance of containment structural materials under high temperatures and high pressures;
  • Conductive materials under extreme engineering conditions;
  • Performance of catalytic materials under high temperatures and high pressures.

We look forward to receiving your contributions.

Prof. Dr. Di Yun
Guest Editor

Manuscript Submission Information

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Keywords

  • high temperature
  • high pressure
  • multi-functional materials
  • extreme conditions
  • nuclear fuels and structural materials

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Published Papers (1 paper)

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Research

12 pages, 6301 KiB  
Article
High-Temperature Fatigue Degradation Behaviors of a 3D Braided C/SiC with a Thin Interlayer in Different Dry Oxygen Atmospheres
by Lexin Yang, Dianwei He, Chen Hu, Zhenhuan Gao, Liping Nie, Youbei Sun, Lei Zhang and Xingang Luan
Materials 2024, 17(19), 4925; https://doi.org/10.3390/ma17194925 - 9 Oct 2024
Viewed by 378
Abstract
In order to evaluate the increase in the flexural strength of a 3D braided C/SiC composite comprised with a thin pyrolytic carbon (PyC) interlayer (TI C/SiC) under a load of 60 MPa with an amplitude of ±20 MPa at an oxygen partial pressure [...] Read more.
In order to evaluate the increase in the flexural strength of a 3D braided C/SiC composite comprised with a thin pyrolytic carbon (PyC) interlayer (TI C/SiC) under a load of 60 MPa with an amplitude of ±20 MPa at an oxygen partial pressure of 8000 Pa, the effect of temperature, oxidation and stress value on the length change in the sample, fracture behavior, residual flexural strength and fracture morphology were studied up to 1500 °C. It was found that the gauge length change behaviors of the material are related to (i) the positive damage of the thin interlayer and (ii) to the negative damage of the C phase. The most serious damage of TI C/SiC under 60 ± 20 MPa occurs in an oxygen partial pressure of 17,000 Pa at 1300 °C. When the oxygen partial pressure and/or the temperature are reduced, the positive C phase damage is relieved. In the case that the oxygen partial pressure, temperature and stress increase, the negative C phase damage is facilitated. The oxidation mechanism of the C phase is controlled by the inward diffusion of oxygen from the sample surface to the center; however, a higher stress is considered to change the oxygen diffusion mechanism by increasing the reaction of the C phase, with oxygen causing a widening of microcracks. Full article
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