HIGH TEMPERATURE CERAMIC STRUCTURES
Abstract
Work was directed towards organic silicate impregnating, radome fabricating, and arc-plasma flame glazing. The major effort was expended in radome material evaluation and fabrication from slip-cast fused silica. The organo-silicate impregnant was diluted with water to a 20% SiO2 solution for the studies. Preliminary data show that simple exposure impregnation is superior to the vacuum-pressure impregnation. The effect on the physical properties of vibrated and nonvibrated pressure cast fused silica was studied. Vibration increases the transverse strength of slip-cast fused silica when pressure cast. A study was initiated to develop a fused silica slip which has a green modulus of rupture in the range of 2,000 to 3,000 psi. Temperature profiles run for the radome furnace indicated that both firing methods investigated (shielded and unshielded) produced satisfactory temperature distributions for firing fused silica radomes. Gypsum plaster molds fabricated from the radome will be used for preliminary arc-plasma flame glazing work. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 30, 1962
- Accession Number
- AD0276034
Entities
People
- J.d. Walton
- N.e. Poulos
- S.r. Elkins
Organizations
- Georgia Tech