Preparation of diboride coatings by electrophoretic deposition in nanoparticle-containing molten inorganic salts

Weiliang Jin, Saijun Xiao, Qian Kou, Desheng Ding, Jun Zhang, Xiaohong Fang, Chuntao Ge, Cong Zhong, Hongmin Zhu, Geir Martin Haarberg

Research output: Contribution to journalArticlepeer-review

Abstract

Electrophoretic deposition is a type of significant method for preparing coatings and films, which has been widely investigated in aqueous and organic suspensions. However, electrophoretic deposition in molten inorganic salts containing nanoparticles, have not been reported in the literature. Here we report the possibility of electrophoretic deposition of nanoparticles in molten inorganic salts. In two types of molten systems (fluorides (980 °C) and chlorides (710 °C)), the electrophoretic deposition of diboride nanoparticles (e.g., TiB2 and ZrB2) on different cathode substrates under cell voltages of 1.2–1.5 V (below the decomposition voltage of the electrolytes), has been successfully demonstrated, resulting in a compact TiB2 coating with hardness of 43.7 ± 2.8 GPa and a ZrB2 coating with a nanocrystal structure. Besides diboride nanoparticles, this proposed process should be applicable for a wider range of nanoparticles to produce more types of coatings and films.

Original languageEnglish
Article number130908
JournalMaterials Letters
Volume306
DOIs
Publication statusPublished - 2022 Jan 1

Keywords

  • Ceramics
  • Diboride coatings
  • Electrophoretic deposition
  • Molten inorganic salts
  • Nanoparticles

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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