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Electron Microscopy for Understanding of the Relationship between the Structure, the Properties and the Functions of Metals, Semiconductors, Ceramics, Carbon Materials, Composites and Coatings

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

Deadline for manuscript submissions: closed (10 February 2022) | Viewed by 4888

Special Issue Editors

Prof. Dr. Miroslawa Pawlyta

E-Mail Website
Guest Editor
Materials Research Laboratory, Silesian University of Technology, Konarskiego 18A, 44-100 Gliwice, Poland
Interests: transmission and scanning transmission electron microscopy TEM/STEM; energy dispersive spectroscopy EDS; electron energy loss spectroscopy EELS; electron diffraction; metals and alloys; composite materials; ceramic materials; coatings; nanomaterials
Prof. Dr. Klaudiusz Gołombek

E-Mail Website
Guest Editor
Materials Research Laboratory, Silesian University of Technology, Konarskiego 18A, 44-100 Gliwice, Poland
Interests: scanning electron microscopy SEM; energy dispersive spectroscopy EDS; electron backscatter diffraction EBSD; metals and alloys; composite materials; ceramic materials; coatings; nanomaterials

Special Issue Information

Dear Colleagues,

Electron microscopy is one of the main research techniques used to analyze the structure and properties of materials. The short wavelength of the electrons enable high resolution of the instrument, so features such as single atoms and crystallographic planes can be resolved. However, the most important advantage of electron microscopy for materials science is not its impressive magnification but the opportunities it provides to study the relationship between the structure and properties of analyzed materials. It is possible because in the microscope column not only magnified images, but also the crystal structure (by diffraction) and chemical analysis (by EDS and EELS) can be obtained. All information is recorded in the same place and at the same time.

Electron microscopy can be applied to study almost all materials in a solid state. For some of them, such as nanomaterials, nanocoatings, and nanocomposites, this is the only imaging technique available. Whenever the material properties depend on local changes in the crystal and electronic structure, electron microscopy gives the opportunity to improve these properties and to explain material degradation. For scientists, not only the correct measurements, but also their interpretation and presentation of results in a clear and convincing way are a real challenge. We believe that achieving this goal always significantly contributes to the development of materials science. Therefore, this Special Issue will focus on research results for various materials: metals and alloys, ceramics, semiconductors, carbon and composite materials, coatings and nanomaterials, whose common feature will be the possession of a research problem that has been solved by the using of electron microscopy. Not research equipment with the highest parameters, but a detailed, convincing and inspiring description of the research and interpretation of its results will be the most important.

We kindly invite you to submit a manuscript(s) for this Special Issue. Full papers, communications, and reviews are all welcome.

Prof. Dr. Miroslawa Pawlyta
Prof. Dr. Klaudiusz Gołombek
Guest Editors

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

  • Scanning and Transmission Electron Microscopy SEM/TEM/STEM
  • Energy Dispersive Spectroscopy EDS
  • Electron Energy Loss Spectroscopy EELS
  • Electron Diffraction
  • Electron Backscatter Diffraction EBSD
  • Metals and alloys
  • Composite materials
  • Ceramic materials
  • Coatings
  • Nanomaterials

Published Papers (2 papers)

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Research

13 pages, 5082 KiB  
Article
Microstructure and Mechanical Properties of Modern 11%Cr Heat-Resistant Steel Weld Joints
by Grzegorz Golański, Jacek Słania, Marek Sroka, Paweł Wieczorek, Michał Urzynicok and Ryszard Krawczyk
Materials 2021, 14(12), 3430; https://doi.org/10.3390/ma14123430 - 21 Jun 2021
Cited by 3 | Viewed by 1786
Abstract
In addition to good high-temperature creep resistance and adequate heat resistance, steels for the power industry must have, among other things, good weldability. Weldability of such steels is one of the criteria determining whether or not the material is suitable for applications in [...] Read more.
In addition to good high-temperature creep resistance and adequate heat resistance, steels for the power industry must have, among other things, good weldability. Weldability of such steels is one of the criteria determining whether or not the material is suitable for applications in the power industry. Therefore, when materials such as martensitic steel Thor 115 (T115) are introduced into the modern power industry, the quality and properties of welded joints must be assessed. The paper presents the results of metallographic and mechanical investigations of T115 martensitic steel welded joints. The analysis was carried out on joints welded with two filler metals: WCrMo91 (No. 1) and EPRI P87 (No. 2). The scope of the investigations included: microstructural investigations carried out using optical, scanning and transmission electron microscopy and mechanical testing, i.e., Vickers microhardness and hardness measurement, static tensile test and impact test. The macro- and microstructural investigations revealed correct structure of the weld, without welding imperfections. The microstructural investigations of joint No. 1 revealed a typical structure of this type of joint, i.e., the martensitic structure with numerous precipitates, while in joint No. 2, the so-called Nernst’s layers and δ-ferrite patches were observed in the weld fusion zone as well as the heat affected zone (HAZ). The mechanical properties of the test joints met the requirements for the base material. A slight influence of the δ-ferrite patch on the strength properties of joint No. 2 was observed, and its negative effect on the impact energy of HAZ was visible. Full article
(This article belongs to the Special Issue Electron Microscopy for Understanding of the Relationship between the Structure, the Properties and the Functions of Metals, Semiconductors, Ceramics, Carbon Materials, Composites and Coatings)
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13 pages, 17270 KiB  
Article
Structure and Properties of Co-Cr-Mo Alloy Manufactured by Powder Injection Molding Method
by Grzegorz Matula, Aleksandra Szatkowska, Krzysztof Matus, Błażej Tomiczek and Mirosława Pawlyta
Materials 2021, 14(8), 2010; https://doi.org/10.3390/ma14082010 - 16 Apr 2021
Cited by 6 | Viewed by 2534
Abstract
Cobalt–chromium–molybdenum alloys samples were obtained by the powder injection molding method (PIM). PIM is dedicated to the mass production of components and can manufacture several grades of dental screws, bolts, stabilizers, or implants. As a skeleton component, ethylene–vinyl acetate (EVA copolymer) with a [...] Read more.
Cobalt–chromium–molybdenum alloys samples were obtained by the powder injection molding method (PIM). PIM is dedicated to the mass production of components and can manufacture several grades of dental screws, bolts, stabilizers, or implants. As a skeleton component, ethylene–vinyl acetate (EVA copolymer) with a low temperature of processing and softening point was used. The choice of a low-temperature binder made it necessary to use a coarse ceramic powder as a mechanical support of the green sample during sintering. The injection-molded materials were thermally degraded in N2 or Ar-5%H2 and further sintered in N2-5%H2 or Ar-5%H2 at 1300 or 1350 °C for 30 min. The structure of the obtained samples was characterized by X-ray diffraction and electron microscopy. Mechanical properties, including hardness and three-point bending tests, confirmed that a nitrogen-rich atmosphere significantly increases the bending strength compared to the material manufactured in Ar-5%H2. This is due to the precipitation of numerous fine nitrides and intermetallic phases that strengthen the ductile γ-phase matrix. Full article
(This article belongs to the Special Issue Electron Microscopy for Understanding of the Relationship between the Structure, the Properties and the Functions of Metals, Semiconductors, Ceramics, Carbon Materials, Composites and Coatings)
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