Electrophoretically deposited styrene-acrylate coatings for suppression of internal electromagnetic pulse effects

Conference · Sun Nov 01 04:00:00 EST 1987

OSTI ID:5551244

McLean, M J; Sharp, D J; Hartman, E F

High energy Compton photoelectrons are released from metal surfaces of enclosures following exposure to electromagnetic pulses or x-rays emitted from nuclear bursts. These high energy electrons are particularly troublesome when emitted from high Z materials such as gold, and can cause damage to sensitive electronic systems by electrically overstressing electronic devices. Low electron-emission coatings, preferably a dielectric, can greatly reduce the Internal Electromagnetic Pulse (IEMP) response. Allied-Signal Inc., Bendix Kansas City Division and Sandia National Laboratory, Albuquerque (SNLA) have developed a dielectric coating approach which permits deposition of thin, uniform, and adherent styrene-acrylate films (25 ..mu..m or more) on metal housings. It is also shown that such coatings, when selectively applied on aluminum structures, can be used to mask against electrodeposition of Zn, Sn, and Au thereby providing both an overall IEMP resistant coating and also facilitating selective plating for solder attachments. Coatings were deposited from an aqueous colloidal solution of a styrene-acrylate copolymer and provided hard, clear films having bond strengths in excess of 1.24 x 10/sup 7/ Pa (1800 lbs/in./sup 2/). 8 refs., 8 figs.

• Research Organization: Allied-Signal, Inc., Kansas City, MO (USA). Bendix Kansas City Div.; Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00613
• OSTI ID: 5551244
• Report Number(s): BDX-613-3793; CONF-880312-1; ON: DE88003820
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420800* -- Engineering-- Electronic Circuits & Devices-- (-1989)
ALKYLATED AROMATICS
AROMATICS
DEPOSITION
DIELECTRIC MATERIALS
ELECTROMAGNETIC PULSES
ELECTROMAGNETIC RADIATION
ELECTRONIC CIRCUITS
FILMS
HYDROCARBONS
INTERNAL ELECTROMAGNETIC PULSES
MATERIALS
ORGANIC COMPOUNDS
PACKAGING
PULSES
RADIATIONS
STYRENE
SURFACE COATING
THIN FILMS