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New Horizons in Ceramic Processing and Manufacturing: Celebrating the Institute...
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New Horizons in Ceramic Processing and Manufacturing: Celebrating the Institute for Manufacturing Technologies of Ceramic Components and Composites of the University of Stuttgart

A special issue of Ceramics (ISSN 2571-6131).

Deadline for manuscript submissions: 31 December 2024 | Viewed by 3499

Special Issue Editor

Prof. Dr. Frank Kern

E-Mail Website
Guest Editor
Institute for Manufacturing Technologies of Ceramic Components and Composites (IFKB), University of Stuttgart, 70569 Stuttgart, Germany
Interests: advanced oxide based structural ceramics; zirconia materials; ceramics processing; conventional and additive and manufacturing technologies
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The Institute for Manufacturing Technologies of Ceramic Components and Composites (part of the mechanical engineering faculty of University of Stuttgart) is celebrating its continuity under new leadership. Simultaneously, we would like to honour former managing director Prof. Rainer Gadow, who provided more than 25 years of service from the foundation of the institute in 1995 until his retirement in 2021. He initially primarily focused activities on surface technology and composite materials, which fitted well into the industrial landscape of Stuttgart. Later on, he began new projects in advanced structural ceramics, bioceramics and additive manufacturing. Since September 2023, Prof. Wolfgang Rheinheimer has become managing director and will extend the focus of our institution into new research fields such as functional ceramics, microstructure–property relationships, and advanced sintering technologies aiming at applications in energy technology.

We invite you to propose short communications, full papers, or reviews corresponding to this Special Issue. These may centre on the following topics:

  • Structural ceramics
  • Functional ceramics
  • Composite materials
  • Ceramic coatings
  • Characterization of ceramic materials
  • Processing/manufacturing, including AM
  • Sintering fundamentals and applications
  • Microstructure and Properties of Ceramics

Prof. Dr. Frank Kern
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. Ceramics is an international peer-reviewed open access quarterly 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 1600 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

  • structural ceramics
  • functional ceramics
  • ionic conductors
  • composite materials
  • ceramic coatings
  • characterization
  • processing/manufacturing including am
  • sintering
  • microstructure evolution
  • properties of ceramics

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Published Papers (3 papers)

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Research

13 pages, 9501 KiB  
Article
Microstructural X-Ray Computed Tomography Investigation of the Defect Evolution in Refractory Castings Based on Andalusite
by Anita Razavi, Vanessa Hopp, Dominik Hahn, Almuth Sax and Peter Quirmbach
Ceramics 2024, 7(4), 1867-1879; https://doi.org/10.3390/ceramics7040117 - 3 Dec 2024
Viewed by 411
Abstract
X-ray computed tomography (XRT) has gradually established its position as a non-destructive and, therefore, reproducible three-dimensional (3D) investigation technique, allowing for material- and geometry-independent applications. In the context of this study, XRT provides an enhanced understanding of thermal-induced microstructural changes in an andalusite-based [...] Read more.
X-ray computed tomography (XRT) has gradually established its position as a non-destructive and, therefore, reproducible three-dimensional (3D) investigation technique, allowing for material- and geometry-independent applications. In the context of this study, XRT provides an enhanced understanding of thermal-induced microstructural changes in an andalusite-based refractory, which are not apparent from the limited two-dimensionality of conventional optical investigation techniques. By subjecting an andalusite-based sample to an XRT scan after temperature treatments of T = 110 °C, 800 °C, 1000 °C, 1200 °C and 1400 °C, the XRT technique in this study introduced a novel perspective on the sintering process of andalusite refractory materials. The XRT investigation focused on the thermal-induced defect and crack evolution of the castable as a function of temperature. In addition to general sintering phenomena, this includes the formation of a capillary network filled with silica-rich glass phases (SiO2) due to the mullitization of andalusite. The results of the XRT analysis indicate the existence of glass bridges within these structures. Full article
(This article belongs to the Special Issue New Horizons in Ceramic Processing and Manufacturing: Celebrating the Institute for Manufacturing Technologies of Ceramic Components and Composites of the University of Stuttgart)
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20 pages, 5212 KiB  
Article
Mechanical Properties of an Extremely Tough 1.5 mol% Yttria-Stabilized Zirconia Material
by Frank Kern and Bettina Osswald
Ceramics 2024, 7(3), 1066-1084; https://doi.org/10.3390/ceramics7030070 - 15 Aug 2024
Cited by 2 | Viewed by 1106
Abstract
Yttria-stabilized zirconia (Y-TZP) ceramics with a drastically reduced yttria content have been introduced by different manufacturers, aiming at improving the damage tolerance of ceramic components. In this study, an alumina-doped 1.5Y-TZP was axially pressed, pressureless sintered in air at 1250–1400 °C for 2 [...] Read more.
Yttria-stabilized zirconia (Y-TZP) ceramics with a drastically reduced yttria content have been introduced by different manufacturers, aiming at improving the damage tolerance of ceramic components. In this study, an alumina-doped 1.5Y-TZP was axially pressed, pressureless sintered in air at 1250–1400 °C for 2 h and characterized with respect to mechanical properties, microstructure, and phase composition. The material exhibits a combination of a high strength of 1000 MPa and a high toughness of 8.5–10 MPa√m. The measured fracture toughness is, however, extremely dependent on the measurement protocol. Direct crack length measurements overestimate toughness due to trapping effects. The initially purely tetragonal material has a high transformability of >80%, the transformation behavior is predominantly dilational, and the measured R-curve-related toughness increments are in good agreement with the transformation toughness increments derived from XRD data. Full article
(This article belongs to the Special Issue New Horizons in Ceramic Processing and Manufacturing: Celebrating the Institute for Manufacturing Technologies of Ceramic Components and Composites of the University of Stuttgart)
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13 pages, 17421 KiB  
Communication
The Direct Cold Sintering of α-Al2O3 Ceramics in a Pure Water Medium
by Anastasia A. Kholodkova, Maxim V. Kornyushin, Arseniy N. Khrustalev, Levko A. Arbanas, Andrey V. Smirnov and Yurii D. Ivakin
Ceramics 2024, 7(3), 1030-1042; https://doi.org/10.3390/ceramics7030067 - 31 Jul 2024
Viewed by 1280
Abstract
Porous α-Al2O3 ceramics are a highly sought-after material with a multitude of applications; for example, they are used as filters, substrates, biomedicine materials, etc. Despite the availability of raw materials, a challenge associated with this technology is the high energy [...] Read more.
Porous α-Al2O3 ceramics are a highly sought-after material with a multitude of applications; for example, they are used as filters, substrates, biomedicine materials, etc. Despite the availability of raw materials, a challenge associated with this technology is the high energy budget caused by sintering above 1500 °C. For the cold sintering processing (CSP) of ceramics, lowering the α-Al2O3 sintering temperature is one of the most urgent challenges in the background of its rapid development. This paper is the first to demonstrate a solution to this problem using the CSP of α-alumina ceramics in the presence of pure water as a transient liquid. The manufactured materials were examined using XRD analysis; the evolution of their microstructures during CSP was revealed by SEM; and the porosity was evaluated using the Archimedes method. Ceramics with an open porosity up to 36% were produced at 380–450 °C and 220 MPa in 30 min. An increase in the pressure was found to impede α-Al2O3 formation from γ-AlOOH. The development of the microstructure was discussed within the framework of the dissolution–precipitation model and homogenous nucleation. The results of the SEM study pointed to the coalescence of γ-AlOOH grains during CSP. Full article
(This article belongs to the Special Issue New Horizons in Ceramic Processing and Manufacturing: Celebrating the Institute for Manufacturing Technologies of Ceramic Components and Composites of the University of Stuttgart)
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