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Diamond-Hardfaced WC/Co-Cr Nanocomposites for Extended Service Life of Pump…

Award Information

Agency:
Department of Energy
Branch:
N/A
Award ID:
89729
Program Year/Program:
2008 / SBIR
Agency Tracking Number:
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Diamond Materials Inc.
120 Centennial Avenue Piscataway, NJ 08854
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2008
Title: Diamond-Hardfaced WC/Co-Cr Nanocomposites for Extended Service Life of Pump Bearings in Geothermal Wells
Agency: DOE
Contract: DE-FG02-08ER85139
Award Amount: $100,000.00
 

Abstract:

Renewable energy sources include electrical generators driven by steam from geothermal sources. Submersible pumps with extended service lives are required to improve the economics of today¿s geothermal systems. A major problem is corrosive wear experienced by the pump bearings, when the lubricating brine becomes contaminated with fine sand particles. Typically, the bearings are hardened with WC/Co-Cr, which resists degradation only when there is no sand present. Thus, bearing lifetimes fall far short of the desired 5-10 years lifetimes. This project will develop a diamond-hardened WC/Co-Cr nanocomposite, in which a compositionally-graded layer of diamond nanoparticles is bonded to a nanostructured WC/Co-Cr substrate. A tough Co-Cr binder phase will be used for both the hard WC and the superhard diamond particles, thereby ensuring good fracture resistance of the nanocomposite. A high-pressure sintering technology will be used to produce the desired nanocomposite. To reduce raw-material cost, and to avoid the use of strategic metals such as W and Co, a modified composition ¿ a diamond-hardened TiC/Ti alloy ¿ also will be investigated. Commercial Applications and other Benefits as described by the awardee: For geothermal applications, the nanocomposite should resist coating spallation over the long term. Other commercial applications for diamond-hardened WC/Co-Cr and TiC/Ti-alloy nanocomposites include machine tools, drill bits, and wear parts. The advantages derived from a nanocomposite structure include higher hardness and compressive strength as well as improved fracture toughness.

Principal Investigator:

Oleg A. Voronov
Dr.
7328850805
oavoronov@aol.com

Business Contact:

Oleg A. Voronov
Dr.
7328850805
oavoronov@aol.com
Small Business Information at Submission:

Diamond Materials Inc.
120 Centennial Avenue Piscataway, NJ 08854

EIN/Tax ID: 223388524
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No