Journal of Materials Science

, Volume 15, Issue 6, pp 1379–1386 | Cite as

A study on the electroboronizing of steel by superimposed cyclic current

  • Seong Ho Han
  • John S. Chun
Papers

Abstract

The effect of various activators such as Na2CO3, B4C, NaCl and NaOH in molten borax on the electroboronizing process of low carbon steel at 800° C, and the mechanism of boron formation have been studied. The effect of superimposed a.c. on the penetration depth of boron was also investigated. Experiments show that Na2CO3 is the most effective activator, followed by B4C, NaCl. The most economic composition of activators is identified as 10 wt% Na2CO3, 10 wt% B4C, 20 wt% NaCl. Applying superimposed a.c. has a considerable advantage, because cathodic polarization, affected by frequency and amplitude, is decreased and effective current densities are increased. The boronized layer is more uniform and two times thicker than that formed with conventional electroboronizing methods.

Keywords

Polymer Boron Penetration Depth Carbon Steel Effective Activator 

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Copyright information

© Chapman and Hall Ltd. 1980

Authors and Affiliations

  • Seong Ho Han
    • 1
  • John S. Chun
    • 1
  1. 1.Department of Materials ScienceKorea Advanced Institute of ScienceSeoulKorea

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