Influence of Technology of Nanopowder Production on the Microstructure of the Sintered by Spark-Plasma Material

Authors

  • A. G. Zholnin National Research Nuclear University "MEPhI", 115409 Moscow, Kashirskoye Highway, 31, Russia.
  • A. P. Melekhov National Research Nuclear University "MEPhI", 115409 Moscow, Kashirskoye Highway, 31, Russia.
  • R. S. Hafizov State University of Land Management, 105064 Moscow, Kazakova Street 15, Russia.
  • S. A. Vakulenko National Research Nuclear University "MEPhI", 115409 Moscow, Kashirskoye Highway, 31, Russia.
  • N. A. Rubinkovskiy National Research Nuclear University "MEPhI", 115409 Moscow, Kashirskoye Highway, 31, Russia.
  • A. V. Samokhin Federal State Institution of Science Institute of Metallurgy and Materials Science of A.A. Baikov of Academy of Sciences (RAS IMET), Russia.
  • N. V. Alekseev Federal State Institution of Science Institute of Metallurgy and Materials Science of A.A. Baikov of Academy of Sciences (RAS IMET), Russia.
  • E. G. Grigoryev National Research Nuclear University "MEPhI", 115409 Moscow, Kashirskoye Highway, 31, Russia.

DOI:

https://doi.org/10.9734/bpi/rtcams/v1/10378D

Keywords:

Spark-plasma sintering, powder materials, alumina, microhardness

Abstract

A comparative study of the results of Spark-Plasma Sintering (SPS) of two-types of aluminum oxide nanopowders, obtained by the method of conductor explosion and plasma synthesis. When the parameters of both powders are similar (spherical form of the particles, size, phase composition) as well as SPS modes the properties of the resulting compacts are significantly different both in mechanical properties and microstructure. The reason of differences in the properties of the obtained compacts is in technological impurities in powders, obtained by different methods. Artificial addition of impurities, contained in the nanopowder, obtained by electro explosion of conductor, into the powder, made by synthesis in plasma and not containing these impurities, allowed to reveal their effect on the formation of the microstructure and properties of the sintered by SPS method sample.

Published

2021-07-07

How to Cite

A. G. Zholnin, A. P. Melekhov, R. S. Hafizov, S. A. Vakulenko, N. A. Rubinkovskiy, A. V. Samokhin, … E. G. Grigoryev. (2021). Influence of Technology of Nanopowder Production on the Microstructure of the Sintered by Spark-Plasma Material. Recent Trends in Chemical and Material Sciences Vol. 1, 99–107. https://doi.org/10.9734/bpi/rtcams/v1/10378D

Issue

Recent Trends in Chemical and Material Sciences Vol. 1

Section

Chapters