EXPLORATORY INVESTIGATION OF GLASS-METAL COMPOSITE FIBERS.
Abstract
An investigation has been conducted to develop a process for the production of continuous metal filaments by a technique which involves the casting of molten metal as a core material in a glass capillary as the capillary is continuously formed from glass tubing. Beryllium and copper have been given major consideration as the core metals; chromium, aluminum, iron and tin have been given minor attention. Although beryllium-in-glass composite fibers have been produced by a hand-drawing technique, the development of a continuous process to date has been unsuccessful due to the reaction between beryllium and glass at high temperature. A few short lengths of beryllium-in-glass composite fiber have been obtained by use of protection tubes in the continuous process studies. However, the destructive reaction between beryllium and glass could not be sufficiently reduced for continuous operation. Based on all observations, it appears that the pressure technique is the most attractive approach for further investigations. Copper-glass composite investigations have been chiefly concerned with specimen preparation and process variables such as size, type and purity of raw materials, operating temperature, furnace design, and forming rate. Copper core diameters in the submicron range have been obtained but lack of continuity of the core has been a serious fault. Larger core diameters, in the range of 20 microns, have been obtained in appreciable lengths up to 34 feet long. Studies of other composite fiber systems, including chromium, iron, aluminum and tin were very limited but some success in these areas was indicated. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 07, 1965
- Accession Number
- AD0615098
Entities
People
- C. E. Shulze
- J. E. Cox
- R. D. Veltri
Organizations
- United Aircraft Corporation