INVESTIGATION FOR THE DEVELOPMENT OF GERAMIC BODIES FOR ELECTRON TUBES
Abstract
Experimental compositions are being prepared to investigate the properties (particularly thermal expansion) of ceramic bodies composed of the following: (1) microcrystalline quartz synthesized from amorphous silica, (2) stabilized gamma Al2O3; (3) stabilized enstatite(MgO.SiO2); (4) synthetic alkaline-earth silicates, such as diopside (CaO.MgO.2SiO2) and merwinite (3CaO. MgO.2SiO2); (5) magnesia, containing NiO or Li2TiO3 in solid solution; (6) forsterite compositions forming possible solid solutions; and (7) members of the akermanite-gehlenite solid-solution series. Initial results from exploratory experiments indicate that quartz is readily formed from silica gel doped with 1 mol-% CaO, if heated between 1000 and 1100 C. Other doping agents that were tested promoted cristobalite formation. The first attempt to stabilize enstatite by the addition of 1 mol-% diopside failed. The compositions designed to produce synthetic diopside or merwinite show considerable promise as ceramic bodies. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 14, 1961
- Accession Number
- AD0261467
Entities
People
- H.r. Wisely
Organizations
- General Electric