Electrodeposition of Tantalum and Tantalum-Chromium Alloys

Abstract

A part of a program to develop erosion resistant coatings for advanced gun barrels, electrodeposition of tantalum and tantalum-chromium alloys from fused FLINAK (eutectic mixture of LiF-KF-NaF) has been investigated. Tantalum-chromium alloys containing 2-6% chromium were obtained by codepositing tantalum and chromium from an electrolyte containing 10 wt% TaF5(added as K2TaF7) and 0.5-1.5% Cr (added as CrF3), at 800 C and 15-40 ma/sq cm current density. The alloy coatings were smooth and columnar in structure. The microhardness of these coatings increased with the increase of chromium content.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 01, 1980
Accession Number
ADA088542

Entities

People

  • G. J. Janz
  • I. Ahmad
  • W. A. Spiak

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

DTIC Thesaurus Topics

  • Alloys
  • Chromium
  • Chromium Alloys
  • Coatings
  • Current Density
  • Electrodeposition
  • Electrolytes
  • Electroplating
  • Hardness
  • Materials
  • Materials Processing
  • Mechanical Properties
  • Metals
  • Microhardness
  • Refractory Metals
  • Stainless Steel
  • Tantalum

Readers

  • Surface Engineering/Surface Coating Technology.