Special Issue "Advances in Synthesis of Metallic, Oxidic and Composite Powders"
Deadline for manuscript submissions: closed (30 June 2020).
A printed edition of this Special Issue is available here.
Interests: hydrometallurgy; recycling; nanotechnology; waste water treatment; recycling; materials engineering; environmental protection
Special Issues and Collections in MDPI journals
Interests: pyrometallurgy, process technology; metals; recycling; purification; alloying; WEEE; spent batteries; critical materials; circular economy, electrometallurgy
Special Issues and Collections in MDPI journals
Special Issue in Metals: New Science Based Concepts for Increased Efficiency in Battery Recycling 2020
Special Issue in Metals: 10th Anniversary of Metals: Metallurgy and Metal Technology
Special Issue in Metals: Advances in Understanding of Unit Operations in Non-ferrous Extractive Metallurgy
Special Issue in Metals: Advances in Understanding Metal Electrolysis Processes
Special Issue in Metals: New Science Based Concepts for Increased Efficiency in Battery Recycling 2022
Special Issue in Metals: Thermal Conditioning of Metals and EoL-Products for Improved Recycling Efficiency
The high demand for new materials, such as metals, oxides, and composites, raises the need for an advanced synthesis of different materials, which are crucial for technological applications. Different process synthesis routes, such as atomization, reduction in aqueous phase, crystallization, chemical precipitation, high pressure reaction in autoclave, and electrolysis, can be used to create controlled powder characteristics with specific properties for a particular application or industry. Advances in synthesis explores a range of materials and techniques used for powder metallurgy and the use of this technology across a variety of application areas such as medicine, catalysis and automotive industry. This Special Issue, "Advances in the Synthesis of Metallic, Oxidic and Composite Powders", is dedicated to the latest scientific achievements in an efficient preparation of metals, oxides and composite materials. In this issue, we will be focus on description of the synthesis of metal, oxide and composite particles from the water, metalorganic and colloid solution using different synthesis methods. The main challenge of this issue is the controlled synthesis via process parameters (conditions and modes atomization, the concentration of solution, residence time of aerosol in a reactor, presence of additives, flow rate, decomposition and reduction temperature, different precursors with reducing agents, and surrounding atmosphere) in order to guide the process to obtain powders with such a morphology that satisfies more and more complex requirements for the properties of advanced engineering materials.
The synthesis of powders has two different strategies: “Top-Down” and “Bottom-Up”. The meaning of “Top-Down” is based on mechanical grinding of initial materials to small dimensions. It is necessary to decrease the powder size in order to perform Hall-Petch strengthening and apply a severe plastic deformation to powder particles to perform work hardening. High energy milling has a potential for realizing the new ideas of materials designers. The meaning of “Bottom-Up“ is related to the physico-chemical preparation methods in gas phase (ultrasonic spray pyrolysis, flame pyrolysis and chemical vapor deposition) and in liquid phase (sol gel, hydrothermal processes, precipitation, electrolytic synthesis, high pressure reactions in an autoclave and crystallization). The precipitation methods are usually used for the purification of spent solution.
In this regard, new approaches in material and synthesis design, structural engineering and morphological characteristics are provided. Preparation of metal particles by spray pyrolysis of metal salts is especially challenging. Using aerosol synthesis, a single-step and multistep preparation process of different core-shall particles is possible, thus avoiding several steps like drying, shrinkage, solute precipitation, thermolysis, and sintering to form uniform spherical particles in nanosized and submicron range. Technical limitations of this technique, as well as a comparison with other synthesis methods (difficulty in controlling morphology-porous or hollow particles, relatively low production rate and process of large volume of gas), will be partly considered in order to prevent or solve these problems.
Especially, the newest results in the synthesis of nanosized particles by ultrasonic spray pyrolysis method and other methods will be published. By addressing the complex problems faced in the synthesis procedures, the scaling–up of the aerosol droplet production and other methods shall be considered.
Dr. Srecko Stopic
Prof. Dr. Bernd Friedrich
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 papers will be 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. Metals 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 1800 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.
- Powder metallurgy
- Spray pyrolysis