Novel Manufacturing of Bulk Metallic Glasses

Award Information
Agency: Department of Defense
Branch: Army
Contract: W911QX-07-C-0098
Agency Tracking Number: A052-039-0341
Amount: $778,718.00
Phase: Phase II
Program: SBIR
Awards Year: 2007
Solicitation Year: 2005
Solicitation Topic Code: A05-039
Solicitation Number: 2005.2
Small Business Information
504 Shaw Road Suite 215, Sterling, VA, 20166
DUNS: 838199099
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Tony F Zahrah
 (703) 964-0400
Business Contact
 Tony Zahrah
Title: President
Phone: (703) 964-0400
Research Institution
Materials and Manufacturing Systems, Inc. (MATSYS) proposes to develop a novel manufacturing technique for greatly increasing fine powder yield and improving particle size control by significantly increasing the supersonic gas jet length downstream of the nozzle tip to increase the length of the breakup region and maximize the breakup of the powder. This objective can be achieved by control of the atomizer chamber pressure. Typical controlled-atmosphere atomizers operate with chambers at or slightly above atmospheric pressure. However, if one drops the chamber pressure below atmospheric, one can effectively increase the expansion ratio of the atomizing gas, which produces slightly higher gas velocities and significantly longer supersonic gas jet lengths. The elongated jet lengths will improve atomization performance in the region well downstream of the nozzle, leading to the sought after high yields of fine particles. The ability to control the chamber pressure is the key factor that enables us to examine this previously unexplored processing space. During this program, we will atomize metallic glass compositions, characterize the interaction between chamber pressure and other key atomization parameters, develop the control system to control fine powder yield and particle size, and scale-up the process for cost-effective, high volume production.

* information listed above is at the time of submission.

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