ACTIVATION AS A PREAMBLE FOR SURFACE ENHANCEMENT COATING

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$58,713.00
Award Year:
1983
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
132
Agency Tracking Number:
132
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
1345 Main Street, Waltham, MA, 02154
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
() -
Business Contact:
Kuo Wei Chang
(617) 891-4201
Research Institution:
n/a
Abstract
SUFACE PASSIVATION LAYERS SUCH AS DIAMOND-LIKE CARBON ARE OFTEN PRODUCED ON LASER WINDOWS, WIND SHIELDS OF HYPERSONIC AIRCRAFT, FIBER OPTICS AND MANY OTHER SURFACES. DESPITE ATTRACTIVE PROPERTIES OF THE COATING MATERIALS, LACKING OF PROPER ADHESION BETWEEN HOST AND COATING MATERIAL FREQUENTLY LIMITS THE USEFULNESS OF THE COATING TECHNIQUES. THE PROPOSED PROCESS IS A PRE-TREATMENT TECHNIQUE WHICH PREPARES THE SUBSTRATE SURFACE FOR THE FORMATION OF CHEMICAL COVALENT BONDS WITH THE COATING MATERIAL FOR DRASTIC ENHANCEMENT OF SURFACE ADHESION. A MICROWAVE INDUCED PLASMA DISCHARGE IMPARTS ENGERY TO A SUITABLE IONIC SPECIES WHICH THEN STRIPS ATOMS FROM THE SURFACE LAYER AND CREATES FREE ARADICALS ON THE SUBSTRATE SURFACE. THESE FREE RADICALS, IN TURN FORM COVALENT BONDS WITH THE COATING MATERIAL APPLIED SUBSEQUENTLY. THE EXISTENCE OF STRONG CHEMICAL BONDS CAN PREVENT THE COATING MATERIAL FROM EVER SEPARATING FROM THE SUBSTRATE SURFACE. THE PROPOSED RESEARCH IS DESIGNED TO STUDY AND VERIFY THE UNDERLYING PRINCIPLE WHICH INVOLVES SURFACE ATOM REMOVAL AND FORMATION OF CHEMICAL BONDS. SUBSTRATE MATERIALS USED WILL INCLUDE POLYCARBONATE, FLUORCARBONDS, POLYIMIDE, SILICONE,SILICA AND OTHER MATERIALS. PRELIMINARY TEST RESULTS SHOW THAT SILICON RUBBER CAN BE ATTACHED TO TEFLON SURFACE WITH SUCH STRENGTH THAT IT CAN NOT BE REMOVED WITHOUT CUTTING OFF PART THE TEFLON SURFACE.

* information listed above is at the time of submission.

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