Electrodeposition of TiB2 from cryolite-alumina melts

Dmitry Simakov, Sergei Vassiliev, Parviz Tursunov, Nelli Khasanova, Viktor Ivanov, Artem Abakumov, Anastasiya Alekseeva, Evgenii Antipov, Galina Tsirlina

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Citations (Scopus)

Abstract

Formation of TiB2 and various by-products under cathodic polarization is studied in relation to in situ deposition of coatings on graphite directly from cryohte-alumina bath. This procedure can provide a cheap cathode coating having very good wettability. In order to evaluate the nature of products, the voltammerry and multistep potentiostatic technique are applied in combination with XRD, SEM and local analysis. For CR between 2 and 3 and alumina content of 2-8 wt.%, current efficiency of TiB2 formation is found to pass a maximum at current densities of ca. 0.4-0.5 A/cm2. Parallel deposition of Ti2O3 and suicides in certain potential regions is confirmed. Wetting test demonstrated the formation of homogeneous Al film on as-deposited coatings even under open circuit conditions. Wettability was much better as compared to samples with brushed TiB 2-based coating. A disadvantage of the deposited coatings is their dendrite microstructure which may be improved in future.

Original languageEnglish
Title of host publicationLight Metals 2008 - Proceedings of the technical sessions presented by the TMS Aluminum Committee at the TMS 2008 Annual Meeting and Exhibition
Pages1019-1022
Number of pages4
Publication statusPublished - 2008
Externally publishedYes
EventLight Metals 2008 - New Orleans, LA, United States
Duration: 9 Mar 200813 Mar 2008

Publication series

NameTMS Light Metals
ISSN (Print)0147-0809

Conference

ConferenceLight Metals 2008
Country/TerritoryUnited States
CityNew Orleans, LA
Period9/03/0813/03/08

Keywords

  • Cryolite melt
  • Electrodeposition
  • Titanium diboride
  • Wettable cathode

Fingerprint

Dive into the research topics of 'Electrodeposition of TiB2 from cryolite-alumina melts'. Together they form a unique fingerprint.

Cite this