REACTORS

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$49,948.00
Award Year:
1986
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
3459
Agency Tracking Number:
3459
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
12173 Montague Street, Pacoima, CA, 91331
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
RICHARD B. KAPLAN
PRINCIPAL INVESTIGATOR
(818) 899-0236
Business Contact:
() -
Research Institution:
n/a
Abstract
PRESENT MAGNETIC FUSION CONFINEMENT EXPERIMENTS AND ALL REACTOR DESIGNS INCORPORATE A FIRST WALL AND HAVE LIMITERS EITHER CLOSE TO OR DIRECT CONTACT WITH THE PLASMA. THESE COMPONENTS HAVE DIFFERENT FUNCTIONS, BUT EACH IS EXPOSED TO A "FIRST SURFACE" ENVIRONMENT WITH HIGH THERMAL LOADS, INTENSE NEUTRON RADIATION, AND BONBARDMENT BY ENERGETIC PARTICLES FROM THE PLASMA. THE RESPONSE OF MATERIALS TO THIS ENVIRONMENT INCLUDES HIGH STRESSES, RADIATION DAMAGE, AND SURFACE EROSION RESULTING FROM SPUTTERING BY PLASMA PARTICLES. WHILE BARE CARBON IS PRESENTLY USED AS THE LOW ZPLASMA FACING MATERIAL IN SOME TOROIDAL MACHINES, IT IS NOT REACTOR RELEVANT BECAUSE OF A HIGH TRITIUM PERMEATION. THE MOST WIDELY AND SUCCESSFULLY USED PLASMA FACING MATERIAL IS TIC COATED GRAPHITE PRODUCED BY CHEMICAL VAPOR DEPOSITION (VCD). THE TIC SURFACE HAS A LOW Z, LOW SPUTTERING RATES, AND GOOD PERFORMANCE UNDER HIGH HEAT LOADS. THE PRESENT CVDPROCESS PRODUCES COATINGS 20-40 MICRONS THICK AND THICKER COATINGS ON THE ORDER OF 0.5-1 CM THICK WILL BE REQUIRED FORFUTURE MACHINES. WE PROPOSE TO INVESTIGATE THE FEASIBILITY OF EXPANDING OUR PROPRIETARY TIC CVD PROCESS TO PRODUCE DEPOSITS TWO TO THREE ORDERS OF MAGNITUDE THICKER THAN PRESENTLY AVAILABLE. A HIGH STRENGTH, THICK COATING WILL BE PRODUCED BY MEANS OF INFILTRATING GRAPHIC FIBER STRUCTURES WITH TIC. AN EXPERIMENTAL PROGRAM TO DETERMINE THE CORRECT DEPOSITION PARAMETERS FOR FIBER INFILTRATION IS PROPOSED TO PRODUCE THICK, DENSE TIC BLANKETS IN ANY SHAPE WHICH IS LIKELY TO BE MORE ECONOMICAL THAN OTHER COMPETING PROCESSES. THE PERFORMANCE AND ADHESION OF THE THICK TIC BLANKET WILL BE DETERMINED BY ANALYSIS HERE AND BY TESTS UNDER PARTICLE BOMBARDMENT AT SNL, UCLA, AND HEDL. FIRST WALL AND LIMITER SURFACES SUCCESSFULLY PRODUCED BY THIS PROCESS WILL HAVE THE MATERIALS PERFORMANCE REQUIRED FOR FUSION REACTORS.

* information listed above is at the time of submission.

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