Project No: FE0007377
Performer: University of Wisconsin System
Robert Romanosky Crosscutting Research Technology Manager National Energy Technology Laboratory 3610 Collins Ferry Road P.O. Box 880 Morgantown, WV 26507-0880 304-285-4721 Robert.email@example.com Rick Dunst Project Manager National Energy Technology Laboratory 626 Cochrans Mill Road P.O. Box 10940 Pittsburgh, PA 15236-0940 412-386-6694 firstname.lastname@example.org John Perepezko Principal Investigator University of Wisconsin 1509 University Avenue Madison, WI 53706 608-263-1678 email@example.com
DOE Share: $300,000.00
Performer Share: $0.00
Total Award Value: $300,000.00
Performer website: University of Wisconsin System - http://www.wisconsin.edu/
The proposed effort will advance the performance of refractory metals by integration of high temperature coating processes uniquely by means of modeling and experimental verifications in a focused, staged development. The ultimate goal of the proposed study will be to deliver the key enabling coating technology for at least a 400 degrees Celsius (°C) increase of the metal operating temperature from 1200°C to 1600°C.
Program Background and Project Benefits
This project will employ a new smart coating concept for refractory metal-borosilicide and -aluminide systems in order to provide a 400 °C increase in temperature resistance beyond that of current Ni-based superalloys in materials. Improvements to high-temperature advanced-materials will promote the development of advanced power plant designs that can operate at higher temperatures and pressures, leading to improvements in efficiency and operational flexibility and resulting in lower operating costs.
Niobium samples were coated with different ratios of Si-B and Mo-Si-B before undergoing oxidation testing. The presence of Nb2O5 was identified in the mixed oxides of samples at all ratios. Given the same Si:B ratios, the Mo-Si-B coating imparted enhanced oxidation protection to the Nb samples compared to the samples coated with Si-B only. These empirical results, along with computer modeling results, will be used to develop and test new refractory alloy coatings with the goal of increasing their useful operating temperatures.