Production of High-Purity Tantalum Metal Powder for Capacitors Using Self-Propagating High-Temperature Synthesis

In this study, high-purity tantalum metal powder was manufactured via self-propagating high-temperature synthesis. During the process, Ta2O5 and Mg were used as the raw material powder and the reducing agent, respectively, and given that combustion rate and reaction temperature are important factors...

Full description

Saved in:
Bibliographic Details
Published inArchives of metallurgy and materials Vol. 66; no. 4; pp. 935 - 939
Main Authors Lee, Yong-Kwan, Sim, Jae-Jin, Byeon, Jong-Soo, Lee, Yong-Tak, Cho, Yeong-Woo, Kim, Hyun-Chul, Heo, Sung-Gue, Lee, Kee-Ahn, Seo, Seok-Jun, Park, Kyoung-Tae
Format Journal Article
LanguageEnglish
Published Warsaw Polish Academy of Sciences 01.01.2021
Subjects
By products
capacitor
Capacitors
Chemical reduction
Dielectric properties
magnesium
Metal powders
Metals
Particle size
Purity
Raw materials
Reagents
Reducing agents
Self propagating high temperature synthesis
Tantalum
tantalum oxide
Tantalum oxides
Online AccessGet full text

Cover

More Information
Summary:In this study, high-purity tantalum metal powder was manufactured via self-propagating high-temperature synthesis. During the process, Ta2O5 and Mg were used as the raw material powder and the reducing agent, respectively, and given that combustion rate and reaction temperature are important factors that influence the success of this process, these factors were controlled by adding an excessive mass of the reducing agent (Mg) i.e., above the chemical equivalent, rather than by using a separate diluent. It was confirmed that Ta metal powder manufactured after the process was ultimately manufactured 99.98% high purity Ta metal powder with 0.5 µm particle size. Thus, it was observed that adding the reducing reagent in excess favored the manufacture of high-purity Ta powder that can be applied in capacitors.
ISSN:1733-3490
2300-1909
DOI:10.24425/amm.2021.136400