OXIDATION RESISTANT HIGH TEMPERATURE PROTECTIVE COATINGS FOR TUNGSTEN.
Abstract
Three coating systems were developed that pro tected 60 mil tungsten sheet from oxidation in air at elevated temperatures. These composites, applied by the vacuum pack process, were; sili con-tungsten; titanium zirconium silicon tungsten, and; titanium zirconium-boron sili con-tungsten. A laboratory scale process for ap plication of each coating to tungsten sheet was developed and optimized. Oxidation characteris tics of the coated systems in air under various static and cyclic conditions were determined from 1600 to 3650 F with several hours protection being achieved under cyclic conditions at 3550 F. Tensile tests were conducted on two of the three systems at regular temperature increments from room temperature to 3300 F under various environ mental conditions. Stress oxidation, thermal shock, and hot gas erosion tests were also con ducted on the diffraction patterns were deter mined on the silicon-tungsten and titanium zirconium silicon-tungsten composites in the coated and exposed conditions. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1963
- Accession Number
- AD0418300
Entities
People
- H.j. Nolting
- R.a. Jefferys