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IMPROVED DIAMOND POLISHING THROUGH AN ION IMPLANTATION ASSISTED TECHNIQUE

Award Information

Agency:
National Science Foundation
Branch:
N/A
Award ID:
17422
Program Year/Program:
1992 / SBIR
Agency Tracking Number:
17422
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
SPIRE CORPORATION
1 PATRIOTS PARK BEDFORD, MA 01730-2396
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1992
Title: IMPROVED DIAMOND POLISHING THROUGH AN ION IMPLANTATION ASSISTED TECHNIQUE
Agency: NSF
Contract: N/A
Award Amount: $49,949.00
 

Abstract:

DIAMOND, BECAUSE OF ITS HARDNESS, CHEMICAL INERTNESS, OPTICAL TRANSPARENCY OVER A WIDE RANGE OF WAVELENGTHS, THERMAL CONDUCITIVITY, AND ELECTRICAL RESISTIVITY, IS AN EDCELLENT MATERIAL FOR MANY APPLICATIONS. SYNTHETIC DIAMONDAND DIAMOND FILMS HAVE BEEN SUGGESTED FOR USE AS ABRASIVES, BEARING AND WEAR RESISTANT SURFACES, TOOL COATINGS, HEAT SINKS, AND OPTICAL COATINGS AND WINDOWS. CHEMICAL VAPOR DEPOSITION (CVD) AND RELATED PROCESSES HAVE BEEN DEVELOPED AS A MEANS OF PRODUCING SYNTHETIC DIAMOND AT RELATIVELY LOW TEMPERATURES AND PRESSURES. HOWEVER, IN SPITE OF RECENT PROGRESS, CVD DIAMOND IS LESS THAN SATISFACTORY BECAUSE THE DEPOSITS ARE POLYCRYSTALLINE IN FORM WITH GRAINS OF VARYING SIZES AND ORIENTATIONS. THIS LIMITS THE USE OF DIAMOND IN SEVERAL APPLICATIONS. POLISHING OF DIAMOND FILMS WITH DIAMOND PARTICLES CAN BE USED TO IMPROVE THE FILMS, BUT THE POLISHING PROCESS IS LONG AND EXPENSIVE, AND DOES NOT PRODUCE IDEAL RESULTS. FURTHERMORE, DURING MECHANICAL POLISHING, GRAINS IN THE FILM FREQUENTLY BECOME DISLODGED, EXTENDING THE NECESSARY POLISHING TIME. ION IMPLANTATION OF DIAMOND AND POLYCRYSTALLINE DIAMOND CREATES SUBSTANTIAL RADIATION DAMAGE, AMORPHIZATION, AND ULTIMATELY GRAPHITIZATION. THE ION BOMBARDED LAYERS CREATEDON DIAMOND SUBSTRATES ARE SUBSTANTIALLY SOFTER THAN THE BULKMATERIAL, AND ARE THEREFORE MUCH EASIER TO POLISH. THIS PROJECT WILL PROVIDE A PROOF-OF-PRINCIPLE STUDY, DEMONSTRATING A PROCESS FOR POLISHING POLYCRYSTALLINE DIAMOND WHICH CONSISTS OF ION IMPLANTATION FOLLOWED BY MECHANICAL POLISHING. OPTICAL QUALITY FINISHES SIGNIFICANTLY BETTER THAN THOSE WHICH CAN BE OBTAINED FROM MECHANICAL POLISHING ALONE ARE PRODUCED BY SUCH SEQUENTIAL IMPLANTATION AND POLISHING; IT IS ANTICIPATED THAT THIS PROCESS WILL SIGNIFICANTLY SIMPLIFY THE POLISHING OF POLYCRYSTALLINE DIAMOND.

Principal Investigator:

Piran Sioshansi
Section Manager
6172756000

Business Contact:

Small Business Information at Submission:

Spire Corp
One Patriots Park Bedford, MA 01730

EIN/Tax ID:
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No