An Assessment of Physics Research Opportunities Available from Rapid Heating and Cooling.
Abstract
Rapid heating and cooling (i.e. rates of temperature change greater than one million degrees K/sec) have become a major new approach to materials processing in the metallurgy and electronics communities; rates up to 10 to the 14th power degrees K/sec have been reported in the literature. This report assesses where the capability for rapid energy transfer into a condensed phase, developed as part of materials processing research, might also be utilized to give new insights into physical properties or to explore new concepts in physics. The unique aspect of the rapid heating/cooling technology is the short time frame, 10 to the minus 8th power - 10 to the minus 12th power sec used to transfer the energy. Electron and laser beams are the most likely heating sources since they can generate short, intense, controlled pulses; rapid cooling must depend on conductive heat flow and is thereby restricted to thin film configurations. The perceived physics research opportunities are organized about four categories: mass transport, energy transport, theoretical concepts and dynamic measurement capability. The section on mass transport examines issues in nucleation, solidification , segregation, melting and metastable structure. The section on energy transport examines issues in beam-matter interactions, thermalization processes, interfacial energy transfer, thermoelectric effects, and thermoacoustic coupling. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 07, 1980
- Accession Number
- ADA084990
Entities
People
- James S. Murday
Organizations
- United States Naval Research Laboratory