Laser Means of Synthesizing and Modifying Refractory Powders
Abstract
The object of research performed under this contract is to use a laser beam to synthesize and/or modify ceramic powders to obtain powders of very high quality for use in sintering or hot pressing. Among the powder qualities known to be highly desireable for sintering are small diameter, narrow size distribution, impurity control and a nearly spherical shape. The laser offers a clean heat source without a hot-walled chamber, and a well defined and controlled hot zone. Initially, synthesis and modification of silicon nitride is being investigated. Three techniques are being developed: (1) Size reduction and property modification of powders. (2) Synthesis of fine uniformly-sized powders formed from gas phase reactants. (3) Synthesis of composite particles formed by pyrolysing a gas phase reactant onto the surface of a heated particle.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1978
- Accession Number
- ADA068664
Entities
People
- John S. Haggerty
- W. R. Cannon
Organizations
- Massachusetts Institute of Technology