A NOVEL CERAMIC, THIN FILM COATING AS A MOISTURE BARRIER FOR AMMUNITION CONTAINERS

Award Information
Agency: Department of Defense
Branch: Army
Contract: N/A
Agency Tracking Number: 18450
Amount: $53,837.00
Phase: Phase I
Program: SBIR
Awards Year: 1992
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Tpl, Inc.
3754 Hawkins, Ne, Albuquerque, NM, 87109
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dr. Richard W. Brotzman
 (505) 345-5668
Business Contact
Phone: () -
Research Institution
N/A
Abstract
CURRENT MOISTURE BARRIERS FOR AMMUNITION CONTAINERS CONSIST OF LAYERS OF ASPHALT IMPREGNATED PAPER AND ALUMINUM FOIL. ALUMINUM FOIL IS NOTED FOR ITS PINHOLE LEAKS. MOISTURE WILL DIFFUSE THROUGH ASPHALT IMPREGNATED PAPER. CONSEQUENTLY, MOISTURE-INDUCED CORROSION OF AMMUNITION AND DEGRADATION OF FUZE AND PROPELLANT CAN FREQUENTLY OCCUR OVER LONG TIME PERIODS. A NOVEL SOL-GEL-DERIVED 47 WT% ALUMINOSILICATE COMPOSITION HAS BEEN DEVELOPED WITH HERMETIC PROPERTIES. A VERY LOW SURFACE AREA, A RESULT OF A UNIQUE CLOSED CELL STRUCTURE, PRODUCES THE HERMETIC PROPERTIES. THESE PROPERTIES ARE PRODUCED UNDER EXTREMELY MILD, APPROXIMATELY 100 DEGREES C, PROCESSING TEMPERATURES. THE THIN COATING, APPROXIMATELY 1.5 NM, IS EXTREMELY STRONG, TOUGH, AND DURABLE. A REACTIVE PRIMER HAS BEEN DEVELOPED TO ASSURE CHEMICAL BONDING OF THE COATING TO A VARIETY OF SUBSTRATES. THIS COATING WILL BE EVALUATED FOR CONTAINER APPLICATIONS. SOL-GEL PROCESS CONDITIONS WILL BE DETERMINED FOR CONTAINER BOARD SUBSTRATES. COATED SPECIMENS WILL BE PREPARED. MECHANICAL TESTS WILL INCLUDE ADHERENCE, FLEXURE, AND IMPACT. HERMETIC TESTS WILL BE PERFORMED. COATING OF COMPLEX GEOMETRICAL SURFACES WILL BE INVESTIGATED. COATED TUBES WILL BE DELIVERED TO ARDEC. TPL IS ACTIVE IN THE DEVELOPMENT OF THIS MATERIAL SYSTEM. COMPLETE RESOURCES EXIST TO ACHIEVE PROGRAM OBJECTIVES. TECHNICAL CAPABILITIES ARE ENHANCED VIA TPL'S ASSOCIATION IWTH THE CENTER FOR MICRO-ENGINEERED CERAMICS.

* information listed above is at the time of submission.

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