skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Electrochemical system and method for electropolishing hollow metal bodies

Abstract

A method and system for electrochemically machining a hollow body of a metal or a metal alloy. An electrode is positioned within a hollow body including a metal or metal alloy, where the hollow body has a variable internal diameter. The hollow body is oriented vertically, with the electrode oriented vertically therein. The hollow body is at least partially filled with an aqueous, acidic electrolyte solution, the electrolyte solution being devoid of hydrofluoric acid and having a viscosity less than 15 cP. An electric current is passed between the hollow body and the electrode, where the electric current includes a plurality of anodic pulses and a plurality of cathodic pulses, and where the cathodic pulses are interposed between at least some of the anodic pulses.

Inventors:
; ;
Issue Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1457035
Patent Number(s):
9,987,699
Application Number:
14/585,897; FNAL Purchase Order Number 594128.
Assignee:
Faraday Technology, Inc. (Englewood, OH)
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Dec 30
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Taylor, E. Jennings, Inman, Maria E., and Hall, Timothy. Electrochemical system and method for electropolishing hollow metal bodies. United States: N. p., 2018. Web.
Taylor, E. Jennings, Inman, Maria E., & Hall, Timothy. Electrochemical system and method for electropolishing hollow metal bodies. United States.
Taylor, E. Jennings, Inman, Maria E., and Hall, Timothy. Tue . "Electrochemical system and method for electropolishing hollow metal bodies". United States. https://www.osti.gov/servlets/purl/1457035.
@article{osti_1457035,
title = {Electrochemical system and method for electropolishing hollow metal bodies},
author = {Taylor, E. Jennings and Inman, Maria E. and Hall, Timothy},
abstractNote = {A method and system for electrochemically machining a hollow body of a metal or a metal alloy. An electrode is positioned within a hollow body including a metal or metal alloy, where the hollow body has a variable internal diameter. The hollow body is oriented vertically, with the electrode oriented vertically therein. The hollow body is at least partially filled with an aqueous, acidic electrolyte solution, the electrolyte solution being devoid of hydrofluoric acid and having a viscosity less than 15 cP. An electric current is passed between the hollow body and the electrode, where the electric current includes a plurality of anodic pulses and a plurality of cathodic pulses, and where the cathodic pulses are interposed between at least some of the anodic pulses.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {6}
}

Patent:

Save / Share:

Works referenced in this record:

The Limiting Rate of Deposition by P-R Plating
journal, January 1971

  • Cheh, H. Y.
  • Journal of The Electrochemical Society, Vol. 118, Issue 7, p. 1132-1134
  • DOI: 10.1149/1.2408262

Electrodeposition of Gold by Pulsed Current
journal, January 1971

  • Cheh, H. Y.
  • Journal of The Electrochemical Society, Vol. 118, Issue 4, p. 551-557
  • DOI: 10.1149/1.2408110

Impact of Forming, Welding, and Electropolishing on Pitting and the Surface Finish of SRF Cavity Niobium
journal, June 2011

  • Cooley, L. D.; Burk, D.; Cooper, C.
  • IEEE Transactions on Applied Superconductivity, Vol. 21, Issue 3, p. 2609-2614
  • DOI: 10.1109/TASC.2010.2083629

Application of Chemical and Electrochemical Micromachining in the Electronics Industry
journal, January 1989

  • Datta, Madhav; Romankiw, Lubomyr T.
  • Journal of The Electrochemical Society, Vol. 136, Issue 6, p. 285C-292C
  • DOI: 10.1149/1.2097055

Fundamental aspects and applications of electrochemical microfabrication
journal, May 2000


AC Impedance Study of Anodically Formed Salt Films on Iron in Chloride Solution
journal, January 1992

  • Grimm, R. D.; West, A. C.; Landolt, D.
  • Journal of The Electrochemical Society, Vol. 139, Issue 6, p. 1622-1629
  • DOI: 10.1149/1.2069467

Electrocrystallization in pulse electrolysis
journal, March 1978


Fundamental aspects of electropolishing
journal, January 1987


Calculation of the Optimal Geometry of Electrochemical Cells: Application to the Plating on Curved Electrodes
journal, January 2002

  • Lavelaine de Maubeuge, H.
  • Journal of The Electrochemical Society, Vol. 149, Issue 8, p. C413-C422
  • DOI: 10.1149/1.1487835

Achievement of in the superconducting nine-cell cavities for TESLA
journal, May 2004

  • Lilje, L.; Kako, E.; Kostin, D.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 524, Issue 1-3, p. 1-12
  • DOI: 10.1016/j.nima.2004.01.045

Development of electropolishing technology for superconducting cavities
conference, January 2003


MREF-ECM process for hard passive materials surface finishing
journal, January 2001

  • Sun, J. J.; Taylor, E. J.; Srinivasan, R.
  • Journal of Materials Processing Technology, Vol. 108, Issue 3, p. 356-368
  • DOI: 10.1016/S0924-0136(00)00833-5

The Mechanism of Electropolishing of Niobium in Hydrofluoric–Sulfuric Acid Electrolyte
journal, January 2008

  • Tian, Hui; Corcoran, Sean G.; Reece, Charles E.
  • Journal of The Electrochemical Society, Vol. 155, Issue 9, p. D563-D568
  • DOI: 10.1149/1.2945913

Copper Electropolishing in Concentrated Phosphoric Acid: I . Experimental Findings
journal, January 1995

  • Vidal, Roberto; West, Alan C.
  • Journal of The Electrochemical Society, Vol. 142, Issue 8, p. 2682-2689
  • DOI: 10.1149/1.2050074

Copper Electropolishing in Concentrated Phosphoric Acid: II . Theoretical Interpretation
journal, January 1995

  • Vidal, Roberto; West, Alan C.
  • Journal of The Electrochemical Society, Vol. 142, Issue 8, p. 2689-2694
  • DOI: 10.1149/1.2050075

The Application of Pulsed Current Electrolysis to a Rotating-Disk Electrode System: I . Mass Transfer
journal, January 1978

  • Viswanathan, K.; Farrell Epstein, M. A.; Cheh, H. Y.
  • Journal of The Electrochemical Society, Vol. 125, Issue 11, p. 1772-1776
  • DOI: 10.1149/1.2131292

Current Distributions on Recessed Electrodes
journal, January 1991

  • West, Alan C.; Newman, John
  • Journal of The Electrochemical Society, Vol. 138, Issue 6, p. 1620-1625
  • DOI: 10.1149/1.2085844

Electrochemical planarization of interconnect metallization
journal, January 2005

  • West, A. C.; Deligianni, H.; Andricacos, P. C.
  • IBM Journal of Research and Development, Vol. 49, Issue 1, p. 37-48
  • DOI: 10.1147/rd.491.0037

Electrohydrodynamic impedance study of anodically formed salt films on iron in chloride solutions
journal, July 1992

  • West, A. C.; Grimm, R.-D.; Landolt, D.
  • Journal of Electroanalytical Chemistry, Vol. 330, Issue 1-2, p. 693-706
  • DOI: 10.1016/0022-0728(92)80337-4

Smooth Nb surfaces fabricated by buffered electropolishing
journal, January 2007


Duplex diffusion layer model for pulse with reverse plating
journal, January 1997