ENVIRONMENTS

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N/A
Agency Tracking Number: 3758
Amount: $50,000.00
Phase: Phase I
Program: SBIR
Awards Year: 1986
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Castle Technology Corp
52 Dragon Court, Woburn, MA, 01801
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 DR J PAUL PEMSLER
 (617) 933-5634
Business Contact
Phone: () -
Research Institution
N/A
Abstract
METAL MATRIX COMPOSITES ARE FABRICATED FROM HIGH STRENGTH FIBER OR PARTICLE REINFORCEMENTS AND A SUITABLE MATRIX ALLOY. ALUMINUM COMPOSITES HAVE SHOWN HIGH STRENGTH AND STABILITY AND ARE WELL SUITED TO ADVANCED MILITARY AND CIVIL DESIGN CONCEPTS. REINFORCING FIBERS OFTEN REACT WITH THE MATRIX ALLOY DURING FABRICATION AND PROCESSING FORMING A THIN DIFFUSION REACTION ZONE SURROUNDING THE REINFORCEMENT. THREE SEPARATE CORROSION REGIONS ARE THEN PRESENT IN THE COMPOSITE: FIBER, INTERDIFFUSION LAYER AND MATRIX ALLOY. TO STUDY THESE PHENOMENA, ALUMINUM METAL MATRIX COMPOSITES WILL BE HEAT TREATED TO ESTABLISH GROWTH OF THE INTERDIFFUSION LAYER FOR SEVERAL REINFORCING FIBERS INCLUDING GRAPHITE AND SILICON CARBIDE. THE CORROSION SUSCEPTIBILITY OF TREATED AND UNTREATED SAMPLES WILL BE COMPARED WITH THE MATRIX ALLOY. SHORT TERM EXPOSURE TESTS AND POTENTIODYNAMIC EVALUATIONS WILL BE CONDUCTED. THE EFFECT OF INTERDIFFUSION LAYER THICKNESS WILL ALSO BE CORRELATED WITH CORROSION SUSCEPTIBILITY OF THE COMPOSITE SAMPLE IN AQUEOUS CHLORIDE ENVIRONMENTS.

* information listed above is at the time of submission.

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government