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Joining Plasma Resistant Lanthana Doped W and CuCrZr Alloy Heat Sinks for Use…

Award Information

Department of Energy
Award ID:
Program Year/Program:
2009 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Technology Assessment & Transfer, Inc.
133 Defense Highway, Suite 212 Annapolis, MD 21401-
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Woman-Owned: Yes
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2009
Title: Joining Plasma Resistant Lanthana Doped W and CuCrZr Alloy Heat Sinks for Use in Nuclear Fusion Applications
Agency: DOE
Contract: DE-FG02-09ER85521
Award Amount: $99,918.00


In the ITER, an international fusion experiment, a magnetically confined cloud of super hot plasma maintains the fusion of tritium and dueterium. The water-cooled diverter cartridge, which removes the charged species generated by the fusion reaction, experiences a harsh environment of rapidly fluctuating temperature. In this environment, the joint between the tungsten plasma facing material on the diverter and the water-cooled CuCrZr alloy heat sink is subject to thermal fatigue cracking. The reliability of these joints is critical to the success of the ITER project, because (1) an efficient fusion process requires the reactor to operate continuously over large periods of time, and (2) inspection of the diverter components would require weeks of down time. This project will develop technology for thermal-fatigue-resistant joints. Phase I will take advantage of recent advancements in powder metallurgy technology to create structurally optimized joints using copper tungsten nano-powders. Commercial Applications and other Benefits as described by the awardee The manufacturing techniques explored in this program would be applicable to many similar high energy situations, such as in super-critical steam-based power generation, vehicle armor systems, and next generation brake pads.

Principal Investigator:

Keith Rozenburg

Business Contact:

Sharon Fehrenbacher
Small Business Information at Submission:

Technology Assessment & Transfer, Inc.
133 Defense Highway Suite 212 Annapolis, MD 21401

EIN/Tax ID: 521253097
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No