The HF “Fluoride-Ion” Cleaning Technique for Superalloys PUBLIC ACCESS

[+] Author Affiliations
Louis F. Pochet, Alfred L. Clavel

Ti-Coating, Inc., Mt. Clemens, MI

Paper No. 87-GT-60, pp. V005T16A001; 6 pages
  • ASME 1987 International Gas Turbine Conference and Exhibition
  • Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Process Industries; General
  • Anaheim, California, USA, May 31–June 4, 1987
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7927-6
  • Copyright © 1987 by ASME


Fluoride-ion cleaning, using Hydrogen Fluoride gas as the active agent, is rapidly becoming established as a cost effective method to prepare nickel and cobalt based superalloys for braze repair.

Background and comparative information on the four basic processes currently in use are discussed. The latest process using hydrogen fluoride gas directly is described in detail including the methods used for precise process control and safe handling of the HF input gas, as well as the off-gas fluoride compounds. Alloys successfully prepared for braze repair are listed. Other uses for the process and potential uses for the manufacture of new components are suggested.

Copyright © 1987 by ASME
Topics: Superalloys
This article is only available in the PDF format.



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