Internal zone growth method for producing metal oxide metal eutectic composites
Abstract
An improved method for preparing a cermet comprises preparing a compact having about 85 to 95 percent theoretical density from a mixture of metal and metal oxide powders from a system containing a eutectic composition, and inductively heating the compact in a radiofrequency field to cause the formation of an internal molten zone. The metal oxide particles in the powder mixture are effectively sized relative to the metal particles to permit direct inductive heating of the compact by radiofrequency from room temperature. Surface melting is prevented by external cooling or by effectively sizing the particles in the powder mixture.
- Inventors:
-
- Oak Ridge, TN
- Knoxville, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 863707
- Patent Number(s):
- 4231796
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- internal; zone; growth; method; producing; metal; oxide; eutectic; composites; improved; preparing; cermet; comprises; compact; 85; 95; percent; theoretical; density; mixture; powders; containing; composition; inductively; heating; radiofrequency; field; formation; molten; particles; powder; effectively; sized; relative; permit; direct; inductive; temperature; surface; melting; prevented; external; cooling; sizing; metal particle; producing metal; eutectic composition; theoretical density; metal particles; improved method; metal oxide; oxide particles; oxide powder; oxide powders; powder mixture; permit direct; percent theoretical; comprises preparing; growth method; frequency field; oxide particle; /419/
Citation Formats
Clark, Grady W, Holder, John D, and Pasto, Arvid E. Internal zone growth method for producing metal oxide metal eutectic composites. United States: N. p., 1980.
Web.
Clark, Grady W, Holder, John D, & Pasto, Arvid E. Internal zone growth method for producing metal oxide metal eutectic composites. United States.
Clark, Grady W, Holder, John D, and Pasto, Arvid E. Tue .
"Internal zone growth method for producing metal oxide metal eutectic composites". United States. https://www.osti.gov/servlets/purl/863707.
@article{osti_863707,
title = {Internal zone growth method for producing metal oxide metal eutectic composites},
author = {Clark, Grady W and Holder, John D and Pasto, Arvid E},
abstractNote = {An improved method for preparing a cermet comprises preparing a compact having about 85 to 95 percent theoretical density from a mixture of metal and metal oxide powders from a system containing a eutectic composition, and inductively heating the compact in a radiofrequency field to cause the formation of an internal molten zone. The metal oxide particles in the powder mixture are effectively sized relative to the metal particles to permit direct inductive heating of the compact by radiofrequency from room temperature. Surface melting is prevented by external cooling or by effectively sizing the particles in the powder mixture.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1980},
month = {Tue Jan 01 00:00:00 EST 1980}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.