A RESEARCH INVESTIGATION OF POSSIBILITIES FOR OBTAINING HOT-HARD ELECTRODEPOSITED CHROMIUM OR CHROMIUM-BASE ALLOYS FOR CANNON

Abstract

Modifications of plating conditions improved the properties and plating characteristics of hot-hard Cr-Fe alloys for use as erosion-resistant electroplate linings for gun tubes. Stress reduction in the plate and better plate coverage of the machinery scratches on steel were the principal improvements. A plate was deposited on an electropolished bore of an erosion- gage weapon insert without a Cr-strike plate; the alloy adhered well to the steel surface after heating for 2.5 hr at 750 deg F. The wear-resistance of Cr- Fe plate was improved by adding SiOsub2 and glycine to the plating bath to modify the deposit from a columnar to a banded structure. The banded, unlike the columnar structure, developed stress cracks, but is expected to provide increased uniformity on gun tube bores.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1952
Accession Number
AD0011210

Entities

People

  • Charles L. Paust
  • Cloyd A. Snavely
  • George M. Scanlon
  • J. E. Bride
  • William H. Safranek

Organizations

  • Battelle Memorial Institute

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Body Weight
  • Chemistry
  • Chromic Acid
  • Cold Water
  • Current Density
  • Electrodeposition
  • Heat Treatment
  • Hot Water
  • Hydrochloric Acid
  • Hydroxides
  • Iron Alloys
  • Materials
  • Materials Laboratories
  • Navy
  • Resistance
  • Silicon Alloys
  • Wear Resistance

Fields of Study

  • Materials science

Readers

  • Surface Engineering/Surface Coating Technology.
  • ballistics.