HIGH STRENGTH AND TOUGHNESS TUNGSTEN CARBIDE (WC) WITH NON-COBALT (Co) MATRICES

Award Information
Agency:
Department of Defense
Amount:
$100,000.00
Program:
STTR
Contract:
W911QX-13-C-0088
Solitcitation Year:
2012
Solicitation Number:
2012.B
Branch:
Army
Award Year:
2013
Phase:
Phase I
Agency Tracking Number:
O12B-T07-2007
Solicitation Topic Code:
OSD12-T07
Small Business Information
UES, Inc.
4401 Dayton-Xenia Road, Dayton, OH, -
Hubzone Owned:
N
Woman Owned:
Y
Socially and Economically Disadvantaged:
N
Duns:
074689217
Principal Investigator
 Carmen Carney
 Principal Investigator
 (937) 255-6910
 ccarney@ues.com
Business Contact
 Mr.Rick Weddle
Title: Director, Contracts
Phone: (937) 426-6900
Email: rweddle@ues.com
Research Institution
 Pennsylvania State University
 Barbara Johnson
 PO Box 30
State College, PA, 16804-
 (814) 865-0307
 Nonprofit college or university
Abstract
Cemented cobalt-tungsten carbide is a material with attractive properties including high hardness and fracture toughness that has found success in a wide variety of applications ranging from drilling bits to armor piercing projectiles. However, with the classification of cobalt as a strategic and critical material that the US Department of Health and Human Services has classified as"reasonably anticipated to be a human carcinogen"a replacement is necessary. Carbides represent a group of materials with inherent high hardness and strength, but that are extremely brittle. This proposal seeks to increase the fracture toughness of tungsten carbide by two parallel processes: bottom up and top down. Nanosized tungsten carbide will be used in the bottom up process to produce highly dense fine-grained structures either through the refinement of commercial powder or of the sintering parameters. While the top-down approach will utilize powder production by arc melting of tungsten carbide and tungsten to produce fine lamella structures. By controlling the final sintered microstructure, the fracture toughness of the binderless tungsten carbide will be increased by producing a dense material with high hardness and strength.

* information listed above is at the time of submission.

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