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Advanced Materials/Coatings for Gun Barrels

Award Information
Agency: Department of Defense
Branch: Army
Contract: N/A
Agency Tracking Number: 20491
Amount: $69,900.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Solicitation Year: N/A
Award Year: 1993
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
1727 Conestoga St.
Boulder, CO 80303
United States
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 John Marshall Iii
 (303) 442-0156
Business Contact
Phone: () -
Research Institution

The application of advanced barrel coatings to provide extended erosion and wear life with high performance ammunition for existing and proposed weapons systems has been limited by the available process technologies capable of applying the required/desired coatings. Electroplating, Chemical Vapor Deposition (CVD), and Physical Vapor Deposition (PVD) have all been attempted with varying degrees of success. Desired coating materials are best applied using PVD, however PVD has suffered from geometric constraints due to a line-of-sight requirement from target to substrate. SURFACE SOLUTIONS (SSI) has developed a new form of PVD deposition, DC Linear Magnetron Sputtering (LMS), capable of uniform deposition inside a gun barrel with a length to diameter ratio exceeding 100 : 1. SSI believes that LMS will be capable of uniformly depositing high-temperature, corrosion resistant materials such as tantalum, alloys of tantalum, molybdenum, niobium, etc. LMS is a line-of-sight PVD process whereby the target(coating material) is tubular and is aligned coazially with the substrate (gun barrel). Sputtering occurs radially and uniformly down the entire lingth of the target and requires no external magnets to contain the plasma. The required uniform magnetic field is generated electrically and is the basis of SSI's LMS process.

* Information listed above is at the time of submission. *

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