ULTRA-HIGH PRESSURE RESEARCH
Abstract
Pressure is a form of mechanical energy, and as such is capable of effecting most chemical and physical properties of matter. The last few years have seen the development of equipment capable of generating pressures in excess of 125,000 bars with simultaneous temperatures over 3000 degrees C. The techniques which have led to the development of such ultra-high pressure equipment are described. Several important types of equipment are discussed and a 600-ton tetrahedral-anvil press is described in detail, together with means for pressure calibration and temperature measurement. Experiments which can be carried out in such a facility involve many fields of science including metallurgy, physics, chemistry, crystallography, thermodynamics, etc. Measurement procedures for such research lag the development of high pressure apparatus. Ultrahigh pressure research will increase knowledge of the solid state and possibly lead to the development of new materials. Its greatest contribution will, however, be our increased knowledge of solids at normal pressure and temperature. The growth of single-crystal diamond is discussed in detail and the results of various experiments presented. Future development of high pressure physics is discussed, including methods of high pressure generation and measurement problems. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1961
- Accession Number
- AD0264232
Entities
People
- W.g. Field
Organizations
- Air Force Cambridge Research Laboratories