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Application of Thermal Plasma in Materials Processing

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

Deadline for manuscript submissions: closed (20 March 2023) | Viewed by 2278

Special Issue Editor


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Guest Editor
School of Mechanical Engineering, Sichuan University, Chengdu 610065, China
Interests: plasma science and technology; advanced manufacturing technology; plasma surface hardening; plasma atomization/spheroidization for high-quality micro-sized powders; plasma spheroidization; plasma synthesis of nanopowders; plasma etching; plasma spraying; plasma

Special Issue Information

Dear Colleagues,

Due to its ultra-high energy density, ultra-high temperature, ultra-fast speed, and diverse chemical activities, thermal plasma can be applied to rapidly and selectively change the states and properties of materials across multiple scales. Based on the different interaction mechanisms between these extreme manufacturing characteristics and the materials to be processed, unique properties and/or surface structures of different materials and components can be attained, outperforming those achieved using conventional manufacturing techniques. Thus, thermal plasma has been an enabling tool for materials processing and thus attracted wide attention for research in both academia and the industry, resulting in the development of diverse materials processing techniques, e.g., plasma spraying, plasma atomization, plasma spheroidization, plasma hardening, plasma etching, etc. However, thermal plasma is essentially interdisciplinary in nature, and sufficient communication between researchers from different disciplines is lacking; thus, this Special Issue has been proposed as a means for bridging this gap. The key topics of this Special Issue include but are not limited to revelation of the underlying scientific mechanisms operating in the materials during processing by thermal plasma, e.g., the interactions between plasma and materials at an atomic or molecular scale as well as their control mechanisms, the fundamental principles and mechanisms of plasma-based materials processing, removal and synthesis of different materials, etc. Meanwhile, breakthroughs in new plasma-based technologies will also be covered, e.g., methods for thermal plasma generation and the development of special equipment that can be used in different scenarios for multiple fields and industries, which can solve a series of problems such as equipment stability, processing determinacy, and cost effectiveness, etc.

In order to share and communicate relevant research findings, I sincerely invite you to submit a manuscript to the Special Issue “Application of Thermal Plasma in Materials Processing”. Full papers, communications, and reviews are all welcome.

Prof. Dr. Deping Yu
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

  • Thermal plasma
  • Arc/RF/microwave plasma
  • Plasma surface treatment
  • Plasma hardening
  • Plasma atomization
  • Plasma spheroidization
  • Plasma synthesis
  • Plasma etching
  • Plasma spraying
  • Plasma deposition
  • Plasma gasification
  • Plasma smelting

Published Papers (1 paper)

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Research

12 pages, 5238 KiB  
Article
Research on Spheroidization of Tungsten Powder from Three Different Raw Materials
by Xiuqing Zhang, Xuchu Hou, Zhenhua Hao, Pei Wang, Yongchun Shu and Jilin He
Materials 2022, 15(23), 8449; https://doi.org/10.3390/ma15238449 - 27 Nov 2022
Viewed by 1615
Abstract
In this work, three kinds of tungsten powders with different particle sizes were spheroidized by radio-frequency (RF) inductively coupled plasma spheroidization. The spheroidization behavior of these tungsten powders was investigated and compared. The spheroidization effects of irregular tungsten powder improves with the decrease [...] Read more.
In this work, three kinds of tungsten powders with different particle sizes were spheroidized by radio-frequency (RF) inductively coupled plasma spheroidization. The spheroidization behavior of these tungsten powders was investigated and compared. The spheroidization effects of irregular tungsten powder improves with the decrease in degree of agglomeration and increases with primary particle size. Spherical tungsten powder from irregular powder with a primary particle size of 19.9 μm and an agglomeration coefficient of 1.59 had the best spheroidization effect; its apparent density, hall flow time, and spheroidization ratio are 9.36 g/cm3, 6.28 s/50 g, and 98%, respectively. The results show that irregular feedstock tungsten powder with a smaller primary particle size and higher agglomeration degree has a poor spheroidization effect because it is easily affected by the gas flow and deviates from the high temperature zone. On the contrary, irregular feedstock tungsten powder with larger primary particle sizes and lower agglomeration degrees has better spheroidization effects. Full article
(This article belongs to the Special Issue Application of Thermal Plasma in Materials Processing)
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