Process Development and Characterization of Chemical Vapor Deposited Tungsten for Gun Barrel Applications.

Abstract

A 20-month program was conducted to develop improved chemical vapor deposition (CVD) processes for applying tungsten to the bores of gun barrels, and further, to characterize the physical and mechanical properties of the CVD tungsten as deposited. Conventional and high strain-rate tensile and compression tests were conducted on CVD tungsten as deposited on 4150 steel at temperatures of -65 F, ambient, and 200 F. Density, thermal expansion, and thermal conductance measurements were also made. Barrel materials of 4150 steel, CG-27, L-605, 718, and Pyromet X-15 were investigated. Based on test firings, acceptable CVD tungsten adherence was demonstrated on 4150, but the other four alloys revealed only marginal quality. Fourteen .220 Swift/MG-3 tests barrels of the five materials were fabricated and delivered to the Air Force. (Author)

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1973
Accession Number
AD0917984

Entities

People

  • David L. Corn
  • Richard A. Harlow

Tags

DTIC Thesaurus Topics

  • Air Force
  • Chemical Vapor Deposition
  • Gun Barrels
  • Guns
  • Materials
  • Mechanical Properties
  • Strain Rate
  • Thermal Expansion
  • Tungsten
  • Vapor Deposition

Fields of Study

  • Materials science

Readers

  • Metallurgy
  • Semiconductor Device Technology
  • ballistics.