Infiltration processing of boron carbide-, boron-, and boride-reactive metal cermets
Abstract
A chemical pretreatment method is used to produce boron carbide-, boron-, and boride-reactive metal composites by an infiltration process. The boron carbide or other starting constituents, in powder form, are immersed in various alcohols, or other chemical agents, to change the surface chemistry of the starting constituents. The chemically treated starting constituents are consolidated into a porous ceramic precursor which is then infiltrated by molten aluminum or other metal by heating to wetting conditions. Chemical treatment of the starting constituents allows infiltration to full density. The infiltrated precursor is further heat treated to produce a tailorable microstructure. The process at low cost produces composites with improved characteristics, including increased toughness, strength.
- Inventors:
-
- Manteca, CA
- Livermore, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 866470
- Patent Number(s):
- 4718941
- Assignee:
- Regents of University of California (Berkeley, CA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- infiltration; processing; boron; carbide-; boron-; boride-reactive; metal; cermets; chemical; pretreatment; method; produce; composites; process; carbide; starting; constituents; powder; form; immersed; various; alcohols; agents; change; surface; chemistry; chemically; treated; consolidated; porous; ceramic; precursor; infiltrated; molten; aluminum; heating; wetting; conditions; treatment; allows; density; heat; tailorable; microstructure; cost; produces; improved; characteristics; including; increased; toughness; strength; metal composites; treatment method; improved characteristics; chemical agent; chemical agents; active metal; boron carbide; heat treated; reactive metal; porous ceramic; ceramic precursor; powder form; metal composite; molten aluminum; chemical treatment; metal cermet; metal cermets; infiltration process; surface chemistry; increased toughness; boride-reactive metal; boron carbide-; /75/419/
Citation Formats
Halverson, Danny C, and Landingham, Richard L. Infiltration processing of boron carbide-, boron-, and boride-reactive metal cermets. United States: N. p., 1988.
Web.
Halverson, Danny C, & Landingham, Richard L. Infiltration processing of boron carbide-, boron-, and boride-reactive metal cermets. United States.
Halverson, Danny C, and Landingham, Richard L. Fri .
"Infiltration processing of boron carbide-, boron-, and boride-reactive metal cermets". United States. https://www.osti.gov/servlets/purl/866470.
@article{osti_866470,
title = {Infiltration processing of boron carbide-, boron-, and boride-reactive metal cermets},
author = {Halverson, Danny C and Landingham, Richard L},
abstractNote = {A chemical pretreatment method is used to produce boron carbide-, boron-, and boride-reactive metal composites by an infiltration process. The boron carbide or other starting constituents, in powder form, are immersed in various alcohols, or other chemical agents, to change the surface chemistry of the starting constituents. The chemically treated starting constituents are consolidated into a porous ceramic precursor which is then infiltrated by molten aluminum or other metal by heating to wetting conditions. Chemical treatment of the starting constituents allows infiltration to full density. The infiltrated precursor is further heat treated to produce a tailorable microstructure. The process at low cost produces composites with improved characteristics, including increased toughness, strength.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1988},
month = {Fri Jan 01 00:00:00 EST 1988}
}