Investigation of Applications of Diamond Film
Abstract
The unique properties of synthetic diamond prepared by chemical vapor deposition suggest potential aerospace applications of interest to the Air Force. The status of the rapidly developing technology of low-pressure diamond film synthesis has been determined by contacts with 76 research groups active in the field. Information on six synthetic techniques and a list of 112 active groups are included. Updated diamond film properties are presented based on the survey, literature data, and the measurements made in this program. Measurements were made of hydrogen diffusion resistance, hardness, thermal shock resistance, rupture strength, and propellant compatibility. A comprehensive screen of 200 potential Air Force applications is presented. These were reduced to a 4 high- value applications: bearing surfaces, barriers for hydrogen diffusion, barriers for propellant corrosion protection, and thermal protection for surfaces with localized high heat flux. Initial reports of unusually high tensile strength for diamond films cannot be supported by detailed analysis of test data, eliminating some structural applications. Technology development plans are presented for obtaining better properties data for demonstrating the application of diamond films to bearings.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1989
- Accession Number
- ADA216104
Entities
People
- D. M. Jassowski
Organizations
- Aerojet Rocketdyne Holdings