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Microwave-Based Diamond Deposition Process for Coating of Materials

Award Information

Agency:
Department of Defense
Branch:
Defense Advanced Research Projects Agency
Award ID:
26713
Program Year/Program:
1994 / SBIR
Agency Tracking Number:
26713
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Microwave Laboratorytories,
8917 Glenwood Avenue Raleigh, NC 27622
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1994
Title: Microwave-Based Diamond Deposition Process for Coating of Materials
Agency / Branch: DOD / DARPA
Contract: N/A
Award Amount: $98,334.00
 

Abstract:

This proposed effort utilizes an existing DoD technology, known as a traveling wave tube (TWT), as a broadband, high-power plasma source. The TWT will permit optimization of processing parameters over a frequency range larger and wider than has previously been examined and will allow optimum, real-time control of the process parameters. This source technology will be combined with a water-based diamond deposition chemistry, which offers considerable advantages over traditional hydrogen-methan chemistries in both safety and manufacturing cost. The goal of this proposed effort is to develop a TWT-based flexible diamond manufacturing process tool. Previous work by MLI -- in cooperation with the Research Triangle Institute -- has already demonstrated that TWTs can be used to generate high-freqency, microwave-excited plasmas for diamond deposition at fixed frequencies. This Phase I effort will demonstrate controlled, variable-frequency operation. This proposed effort will couple microwave energy from a TWT into a cylindrical cavity and use variable frequency operation to raster the plasma along the surface of a carbon composite sample -- thereby demonstrating the feasibility of controlling the efficienty deposition of diamond films over unique geometries. Anticipated Benefits: Diamond films have properties -- e.g., thermal conductivity, chemical inertness, abrasion resistane -- which meet the requirements of a variety of military, space, and commercial applications: scratch-resistant coatings, wear-resistant high-speed bearings, heat sinks and thermal management devices, and anti-corrosion protection. Successful demonstration of plasma spatial rastering has the potential to revolutionize many CVD and CVI technologies and processes.

Principal Investigator:

Arvid Johnson
9197814260

Business Contact:

Small Business Information at Submission:

Microwave Laboratorytories,
8917 Glenwood Avenue Raleigh, NC 27622

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