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Inorganics
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Research on Synthesis, Sintering and Properties of New Inorganic Materials...
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Research on Synthesis, Sintering and Properties of New Inorganic Materials under High Pressure and High Temperature

A special issue of Inorganics (ISSN 2304-6740). This special issue belongs to the section "Inorganic Materials".

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 4990

Special Issue Editor

Prof. Dr. Fang Peng

E-Mail Website1 Website2
Guest Editor
Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
Interests: high pressure and high temperature; structural phase transition; material sintering; material properties; material structure prediction

Special Issue Information

Dear Colleagues,

The synthesis and application of materials under extreme conditions is a research hotspot and frontier of material science. In recent years, with the rapid development of high-pressure science and technology, the fields of physics, chemistry, material science, geoscience, and other disciplines have seen significant development. Especially in materials science, high pressure will change the interaction between atoms and molecules in materials, cause material structure phase transition, and change the properties of materials. The goal of this Special Issue is to showcase the latest achievements of high pressure in the field of inorganic materials and promote the development of inorganic material research. Papers in this Special Issue on “Research on Synthesis, Sintering, and Properties of New Inorganic Materials under High Pressure and High Temperature” can be experimental or theoretical calculation research results on structural transformation, material modification, nanomaterial preparation, material sintering, and so on under high pressure.

Prof. Dr. Fang Peng
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Inorganics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • high pressure and high temperature
  • structural phase transition
  • material sintering
  • material properties
  • material structure prediction

Published Papers (3 papers)

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Research

12 pages, 4227 KiB  
Article
Pressure-Induced Reversible Local Structural Disorder in Superconducting AuAgTe4
by Dmitry A. Zamyatin, Elizaveta A. Pankrushina, Sergey V. Streltsov and Yuri S. Ponosov
Inorganics 2023, 11(3), 99; https://doi.org/10.3390/inorganics11030099 - 28 Feb 2023
Cited by 1 | Viewed by 1111
Abstract
Here, we report results of the investigation of the lattice dynamics of the sylvanite mineral AuAgTe4 in a wide temperature and pressure range by Raman spectroscopy, together with the first-principle calculations. At ambient pressure, the experimental spectrum agrees well with the calculation [...] Read more.
Here, we report results of the investigation of the lattice dynamics of the sylvanite mineral AuAgTe4 in a wide temperature and pressure range by Raman spectroscopy, together with the first-principle calculations. At ambient pressure, the experimental spectrum agrees well with the calculation data. The temperature behavior of the phonon self-energies (frequencies and linewidths) are described by an anharmonic mechanism and imply negligible contributions of electron–phonon interaction at low temperatures. A structural phase transition was recorded in the pressure range of 4–6 GPa, which is in accordance with theoretical predictions. At higher pressures, evidence of local structural disorder was found that made it possible to experimentally observe the spectrum of the density of vibrational states of AuAgTe4, which becomes superconducting under pressure. Full article
(This article belongs to the Special Issue Research on Synthesis, Sintering and Properties of New Inorganic Materials under High Pressure and High Temperature)
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11 pages, 4287 KiB  
Article
Hot Isostatic Pressing Control of Tungsten-Based Composites
by Ryan Schoell, Aspen Reyes, Guddi Suman, Mila Nhu Lam, Justin Hamil, Samantha G. Rosenberg, LaRico Treadwell, Khalid Hattar and Eric Lang
Inorganics 2023, 11(2), 82; https://doi.org/10.3390/inorganics11020082 - 16 Feb 2023
Viewed by 1627
Abstract
Metal-oxide composites are commonly used in high temperature environments for their thermal stability and high melting points. Commonly employed with refractory oxides or carbides such as ZrC and HfC, these materials may be improved with the use of a low density, high melting [...] Read more.
Metal-oxide composites are commonly used in high temperature environments for their thermal stability and high melting points. Commonly employed with refractory oxides or carbides such as ZrC and HfC, these materials may be improved with the use of a low density, high melting point ceramic such as CeO2. In this work, the consolidation of W-CeO2 metal matrix composites in the high CeO2 concentration regime is explored. The CeO2 concentrations of 50, 33, and 25 wt.%, the CeO2 particle size from nanometer to micrometer, and various hot isostatic pressing temperatures are investigated. Decreasing the CeO2 concentration is observed to increase the composite density and increase the Vickers hardness. The CeO2 oxidation state is observed to be a combination of Ce3+ and Ce4+, which is hypothesized to contribute to the porosity of the composites. The hardness of the metal-oxide composite can be improved more than 2.5 times compared to pure W processed by the same route. This work offers processing guidelines for further consolation of oxide-doped W composites. Full article
(This article belongs to the Special Issue Research on Synthesis, Sintering and Properties of New Inorganic Materials under High Pressure and High Temperature)
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8 pages, 1557 KiB  
Article
Morphology Tuned Pressure Induced Amorphization in VO2(B) Nanobelts
by Benyuan Cheng, Huafang Zhang, Quanjun Li, Jing Liu and Bingbing Liu
Inorganics 2022, 10(8), 122; https://doi.org/10.3390/inorganics10080122 - 19 Aug 2022
Cited by 1 | Viewed by 1419
Abstract
Pressure-induced amorphization (PIA) has drawn great attention since it was first observed in ice. This process depends closely on the crystal structure, the size, the morphology and the correlated pressurization environments, among which the morphology-tuned PIA remains an open question on the widely [...] Read more.
Pressure-induced amorphization (PIA) has drawn great attention since it was first observed in ice. This process depends closely on the crystal structure, the size, the morphology and the correlated pressurization environments, among which the morphology-tuned PIA remains an open question on the widely concerned mesoscale. In this work, we report the synthesis and high-pressure research of VO2(B) nanobelts. XRD and TEM were performed to investigate the amorphization process. The amorphization pressure in VO2(B) nanobelts(~30 GPa) is much higher than that in previous reported 2D VO2(B) nanosheets(~21 GPa), the mechanism is the disruption of connectivity at particular relatively weaker bonds in the (010) plane. These results suggest a morphology-tuned pressure-induced amorphization, which could promote the fundamental understanding of PIA. Full article
(This article belongs to the Special Issue Research on Synthesis, Sintering and Properties of New Inorganic Materials under High Pressure and High Temperature)
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