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Spark Plasma Sintering of Materials: Processing and Applications

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Manufacturing Processes and Systems".

Deadline for manuscript submissions: closed (20 September 2023) | Viewed by 2024

Special Issue Editor

State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, China
Interests: fast/ultra-fast sintering; high/ultra-high pressure sintering; advanced ceramics; high-entropy materials

Special Issue Information

Dear Colleagues,

Spark plasma sintering (SPS) technology has attracted much attention not only for the enhancement of consolidation process and capable of producing highly dense materials with smaller grain size and cleaner grain boundaries, but also in exploring the mechanisms underlying fast sintering.

Different from the conventional sintering, SPS involves a pulsed electric current passing directly through the graphite die, by which results in much faster heating rate as well as the controversial contributions from electric field or/and plasma. Like that in hot pressing, SPS also involves the application of a uniaxial pressure for densification promotion. Generally, the rapid densification of SPS has been considered resulting from the joint actions contributing from rapid heating, temperature, pressure, and plausibly electric field. Those flexible parameters open up much more possibilities for microstructural manipulating that have never been achievable by conventional sintering techniques.

Thus, this Special Issue, with the title of “Spark Plasma Sintering of Materials: Processing and Applications”, will focus on the frontier researches associated with SPS technology for the materials of ceramics, metals, alloys, amorphous materials, and so on.

It is my pleasure to invite you to submit a manuscript for this Special Issue. Full papers, communications, and reviews are all welcome. We appreciate your consideration and are looking forward to hearing a positive response from you soon.

Dr. Wei Ji
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.

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Keywords

  • spark plasma sintering
  • high pressure
  • flash spark plasma sintering
  • ceramics
  • alloys

Published Papers (1 paper)

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Research

11 pages, 7658 KiB  
Article
Ultrafine-Grained Tungsten Heavy Alloy Prepared by High-Pressure Spark Plasma Sintering
by Shuaihao Zhang, Qiqi Zhu, Qiunan Li, Wei Ji, Weimin Wang and Zhengyi Fu
Materials 2022, 15(17), 6168; https://doi.org/10.3390/ma15176168 - 05 Sep 2022
Cited by 3 | Viewed by 1512
Abstract
Tungsten heavy alloy (WHA) is an ideal material employed for kinetic energy penetrators due to its high density and excellent mechanical properties. However, it is difficult to obtain ultrafine-grained tungsten alloy with excellent properties by traditional powder metallurgy method because of severe grain [...] Read more.
Tungsten heavy alloy (WHA) is an ideal material employed for kinetic energy penetrators due to its high density and excellent mechanical properties. However, it is difficult to obtain ultrafine-grained tungsten alloy with excellent properties by traditional powder metallurgy method because of severe grain growth at a high sintering temperature with a long soaking time. In this study, the sintering behavior of tungsten alloys was studied at 800 to 1300 °C, and highly dense 93W-5.6Ni-1.4Fe (wt.%) WHA was successfully fabricated at a low temperature of 950 °C with a high pressure of 150 MPa by spark plasma sintering. The as-sintered tungsten alloy possesses a high relative density (98.6%), ultrafine grain size (271 nm) and high dislocation density (2.6 × 1016 m−2), which results in excellent properties such as a high hardness (1079 HV1). The high sintering pressure is considered to support an additional driving force for the sintering and lead to a low-temperature densification, which effectively limits grain growth. Full article
(This article belongs to the Special Issue Spark Plasma Sintering of Materials: Processing and Applications)
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