HIGHLY EFFICIENT HEAT-DISSIPATING FUNCTIONALLY GRADIENT PLASMA FACING MATERIALS

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$599,995.00
Award Year:
1994
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
21109
Agency Tracking Number:
21109
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
7802 Hilton Dr, Huntsville, AL, 35802
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Mr Erin H Richardson
(205) 881-7572
Business Contact:
() -
Research Institute:
n/a
Abstract
CURRENTLY, NO SINGLE MATERIAL SATISFIES ALL THE DESIGN REQUIREMENTS FOR PLASMA FACING COMPONENTS IN MAGNETIC FUSION DEVICES. THEREFORE COMPLEX DESIGNS HAVE BEEN PROPOSED AND TESTED, BUT OPERATION OF THE DEVICES IS STILL LIMITED. INNOVATIVE TECHNIQUES ARE PLANNED IN THIS PROJECT TO FABRICATE FUNCTIONALLY GRADIENT HIGH-Z (ATOMIC NUMBER) TO LOW-Z PLASMA FACING MATERIALS INCORPORATING ACTIVE COOLING, ALLOWING FOR THE SELECTION OF OPTIMUM MATERIALS IN THE OPTIMUM LOCATIONS. COMPONENTS WILL BE FABRICATED UTILIZING VACUUM PLASMA SPRAY TO FORM A GRADIENT STRUCTURE OF COPPER TO TUNGSTEN TO LOW-Z BORON AND BORON NITRIDE IN CONTINUOUS GRADIENTS. THE GRADIENTS WILL MINIMIZE DIFFERENCES IN THERMAL EXPANSION AND LATTICE MISMATCH. THE BORON SURFACE WILL MINIMIZE HEAVY METAL PARTICLE IMPURITIES AND CAN BE NITRIDED TO INCREASE STABILITY. PLASMA FACING COMPONENTS WILL BE FORMED THAT FEATURE HIGHLY EFFICIENT HEAT DISSIPATION THROUGH INTEGRAL COOLING CHANNELS. THE COMPONENTS WILL BE DESIGNED SO THAT THERE ARE NO BONDLINE INTERRUPTIONS BETWEEN THE PLASMA EXPOSED SURFACE AND THE COOLING MEDIA. THE PHASE I EFFORTS SHOULD DEMONSTRATE THE ABILITY TO FABRICATE THE FUNCTIONAL GRADIENTS OF THE MATERIALS OF INTEREST; INITIAL PARAMETERS WILL BE INVESTIGATED, AND SAMPLE MATERIALS WILL BE FABRICATED FOR PHASE II CHARACTERIZATION.

* information listed above is at the time of submission.

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