The hardening mechanism of a chromium-carbon deposit electroplated from a trivalent chromium-based bath

Ching An Huang*, Yu Wei Liu, Ching Hao Chuang

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

30 Scopus citations

Abstract

It has been shown by several researchers that the hardness of a Cr-C deposit obtained from a trivalent Cr-based bath can be tremendously increased to be 1600 Hv after annealing at 600 °C for 1 h. Presently the precipitation of fine chromium carbides in the annealed Cr-C deposit is considered to be the hardening mechanism. However, based on our experimental data, we find that precipitation of a nanosized diamond-structured membrane could be the main hardening mechanism. According to this alternative hardening mechanism, hardening of a Cr-C deposited steel can be accomplished with induction- and flame-heating within a 1 s time period.

Original languageEnglish
Pages (from-to)4902-4904
Number of pages3
JournalThin Solid Films
Volume517
Issue number17
DOIs
StatePublished - 01 07 2009

Keywords

  • Hardening mechanism
  • Induction heating
  • Trivalent chromium electroplating

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