Improved Inorganic Coatings for Gun Tube Launchers.
Abstract
Electric guns have severe corrosion and erosion problems due to the high temperature and pressures produced by the plasma and gun hyper-velocities. The mechanisms of corrosion and erosion in gun-tube launchers are very complex. The overcoming of erosion and corrosion has become very important since they will determine the service life (conventional guns have a service life of 300 to 1000 rounds depending upon the propellant and projectile used) of the electric guns. The guns will be subject to very high plasma temperatures (10,000 deg C to 50,000 deg C) giving rise to alternating stresses of temperature and pressure. It will also be subject to the chemical reaction of the hot gases produced by the combustion of the propellant and to the abrasive action of the unburned propellant and debris. In addition, it will be subject to ambient temperature corrosion because of the collection of combustion products and condensate in the cracks and crevices produced by the use of the gun. Materials and coatings will be needed that can resist or withstand the above mentioned conditions. jg
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1994
- Accession Number
- ADA292304
Entities
People
- Dario A. Emeric
- George D. Farmer Jr.
- Howard E. Horner
Organizations
- United States Army Research Laboratory