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Synthesis and Characterization of Glasses and Ceramic Materials
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Synthesis and Characterization of Glasses and Ceramic Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced and Functional Ceramics and Glasses".

Deadline for manuscript submissions: closed (10 September 2022) | Viewed by 7497

Special Issue Editor

Prof. Dr. Julian Plewa

E-Mail Website
Guest Editor
Institute of Materials Science, Faculty of Sciences and Technology, Silesia University, Katowice, 75 Pułku Piechoty Str. 1a, 41-500 Chorzów, Poland
Interests: optical materials; advanced ceramic and ceramic phosphors

Special Issue Information

Dear Colleagues,

Much has been said so far in the area of the synthesis and characterization of glasses. Numerous publications treat this issue according to a specific point of view related to interest. The proposed Special Issue is about focusing on selected areas concerning glasses with emission properties, the structure of which lies between the glass structure and the structure of glass–ceramics. The research should concern the methods of synthesis of glasses doped with rare Earth metals and/or 3D metals, their crystallization, and the formation of crystal domains in the glass matrix. Measurements of the optical properties (transmission, absorption, and emission) of doped glasses should confirm their usefulness.

This Special Issue is about presenting glasses with luminescent properties, emphasizing their structure and optimizing the properties of the end product.

I am pleased to invite you to submit your manuscript for this Special Issue. Full articles, announcements, and reviews are welcome.

Prof. Dr. Julian Plewa
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. Materials is an international peer-reviewed open access semimonthly 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 2600 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

  • glass crystallization
  • kinetic
  • doped optical glass
  • luminescence

Published Papers (4 papers)

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Research

15 pages, 3415 KiB  
Article
Elastic Properties and Hardness of Mixed Alkaline Earth Silicate Oxynitride Glasses
by Sharafat Ali
Materials 2022, 15(14), 5022; https://0-doi-org.brum.beds.ac.uk/10.3390/ma15145022 - 19 Jul 2022
Cited by 9 | Viewed by 1252
Abstract
The incorporation of nitrogen as a second anion species into oxide glasses offers unique opportunities for modifying glass properties via changes in glass polymerization and structure. In this work, the compositional dependence of elastic properties and the nanoindentation hardness of mixed alkaline-earth silicate [...] Read more.
The incorporation of nitrogen as a second anion species into oxide glasses offers unique opportunities for modifying glass properties via changes in glass polymerization and structure. In this work, the compositional dependence of elastic properties and the nanoindentation hardness of mixed alkaline-earth silicate oxynitride glasses containing a high amount of nitrogen (>15 at.%, c.a. 35 e/o) were investigated. Three series of silicon oxynitride glass compositions AE–Ca–Si–O–N glasses (where AE = Mg, Sr, and Ba) having varying amounts of modifiers were prepared using a new glass synthesis route, in which a precursor powder of metal hydrides was used. The obtained glasses contained high amounts of N (19 at.%, c.a. 43 e/o) and modifier cations (26 at.%, c.a. 39 e/o). Mg–Ca–Si–O–N glasses had high values of nanohardness (12–16 GPa), along with a reduced elastic modulus (130–153 GPa) and Young’s modulus (127–146 GPa), in comparison with the Sr–Ca- and Ba–Ca-bearing oxynitride glasses. Both the elastic modulus and the nanohardness of AE–Ca–Si–O–N glasses decreased with an increase in the atomic number of the AE element. These property changes followed a linear dependence on the effective cation field strength (ECFS) of the alkaline earth (AE) modifier, according to their valences and ionic radii. No mixed alkaline-earth effect was observed in the current investigation, indicating that the properties were more dictated by the nitrogen content. Full article
(This article belongs to the Special Issue Synthesis and Characterization of Glasses and Ceramic Materials)
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15 pages, 7717 KiB  
Article
Crystallization of Lanthanide—Ho3+ and Tm3+ Ions Doped Tellurite Glasses
by Julian Plewa, Małgorzata Płońska, Katarzyna Osińska and Robert Tomala
Materials 2022, 15(7), 2662; https://0-doi-org.brum.beds.ac.uk/10.3390/ma15072662 - 05 Apr 2022
Cited by 1 | Viewed by 1536
Abstract
In the presented work, the tellurite glasses TeO2-WO3-ZnO doped with Tm3+ and Ho3+ ions were prepared by the same glass forming method. X-ray diffraction (XRD) and differential thermal analysis (DTA) techniques were used to study the effects [...] Read more.
In the presented work, the tellurite glasses TeO2-WO3-ZnO doped with Tm3+ and Ho3+ ions were prepared by the same glass forming method. X-ray diffraction (XRD) and differential thermal analysis (DTA) techniques were used to study the effects of the forming technology on the thermal and structural properties of the fabricated glasses. After controlled crystallization of investigated glasses, the emission in the VIS- and NIR range was determined. The effect of silver doping on emission intensity was investigated. The value of the activation energy of the glass crystallization process was determined, while the Ea value for pure TeO2 glass was much lower than for tellurite glasses TeO2-WO3-ZnO. Full article
(This article belongs to the Special Issue Synthesis and Characterization of Glasses and Ceramic Materials)
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11 pages, 2545 KiB  
Article
Numerical Simulation of the Whole Thermal Lensing Process with Z-Scan-Based Methods Using Gaussian Beams
by Georges Boudebs
Materials 2021, 14(19), 5533; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14195533 - 24 Sep 2021
Cited by 4 | Viewed by 1433
Abstract
A general study of the diffracted far field due to thermal lens heating using Gaussian beams is presented. The numerical simulation considers the whole system, including both the optical and the thermal parameters. It is shown that the existing simplified relations found in [...] Read more.
A general study of the diffracted far field due to thermal lens heating using Gaussian beams is presented. The numerical simulation considers the whole system, including both the optical and the thermal parameters. It is shown that the existing simplified relations found in the literature and used up to now only give the order of magnitude of the thermo-optical coefficients. More accurate, simplified formulas are derived to measure the induced thermal phase shift when working with Z-scan-based methods. Temperature estimation in absorbing media turn out to be more reliable whether using time-resolved or steady-state techniques. The extension of the calculation to the image formation in a 4f system is also addressed. Full article
(This article belongs to the Special Issue Synthesis and Characterization of Glasses and Ceramic Materials)
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12 pages, 3104 KiB  
Article
Polysiloxane Bonded Silica Aerogel with Enhanced Thermal Insulation and Strength
by Weilin Wang, Zongwei Tong, Ran Li, Dong Su and Huiming Ji
Materials 2021, 14(8), 2046; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14082046 - 19 Apr 2021
Cited by 11 | Viewed by 2461
Abstract
In order to improve the mechanical properties of SiO2 aerogels, PHMS/VTES-SiO2 composite aerogels (P/V-SiO2) were prepared. Using vinyltriethoxysilane (VTES) as a coupling agent, the PHMS/VTES complex was prepared by conducting an addition reaction with polyhydromethylsiloxane (PHMS) and VTES and [...] Read more.
In order to improve the mechanical properties of SiO2 aerogels, PHMS/VTES-SiO2 composite aerogels (P/V-SiO2) were prepared. Using vinyltriethoxysilane (VTES) as a coupling agent, the PHMS/VTES complex was prepared by conducting an addition reaction with polyhydromethylsiloxane (PHMS) and VTES and then reacting it with inorganic silica sol to prepare the organic–inorganic composite aerogels. The PHMS/VTES complex forms a coating structure on the aerogel particles, enhancing the network structure of the composite aerogels. The composite aerogels can maintain the high specific surface area and excellent thermal insulation properties, and they have better mechanical properties. We studied the reaction mechanism during preparation and discussed the effects of the organic components on the structure and properties of the composite aerogels. The composite aerogels we prepared have a thermal conductivity of 0.03773 W·m−1·K−1 at room temperature and a compressive strength of 1.87 MPa. The compressive strength is several times greater than that of inorganic SiO2 aerogels. The organic–inorganic composite aerogels have excellent comprehensive properties, which helps to expand the application fields of silicon-based aerogels. Full article
(This article belongs to the Special Issue Synthesis and Characterization of Glasses and Ceramic Materials)
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