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in creator/contributor: "Hawk, J.A."  
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Improving the performance of the Y-12 fluidized bed contactors: Final report on investigations at the University of Tennessee

Description: Recent tests at The University of Tennessee in Knoxville (UT) have demonstrated improved fluidization performance in a mockup of the Oak Ridge Y-12 Plant fluidized bed with a modified gas distributor. Combining the modified distributor with the recently developed fluidization intensity module is expected to result in substantial operational improvements for the fluidized beds in Building 9212 at Y-12. Important additional benefits coming from the improved operation of the Y-12 fluidized beds wi… more
Date: August 1, 1993
Creator: Daw, C. S. & Hawk, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Surface Studies of Ultra Strength Drilling Steel after Corrosion Fatigue in Simulated Sour Environment

Description: The Unites States predicted 60% growth in energy demand by 2030 makes oil and natural gas primary target fuels for energy generation. The fact that the peak of oil production from shallow wells (< 5000 m) is about to be reached, thereby pushing the oil and natural gas industry into deeper wells. However, drilling to depths greater than 5000 m requires increasing the strength-to weight ratio of the drill pipe materials. Grade UD-165 is one of the ultra- high yield strength carbon steels devel… more
Date: May 6, 2012
Creator: Ziomek-Moroz, M.; Hawk, J. A.; Ramgopal, Thodla & Gui, F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Microstructural Stability and Oxidation Resistance of 9-12 Chromium Steels at Elevated Temperatures

Description: Various martensitic 9-12 Cr steels are utilized currently in fossil fuel powered energy plants for their good elevated temperature properties such as creep strength, steam side oxidation resistance, fire side corrosion resistance, and thermal fatigue resistance. Need for further improvements on the properties of 9-12 Cr steels for higher temperature (>600oC) use is driven by the environmental concerns (i.e., improve efficiency to reduce emissions and fossil fuel consumption). In this paper, we … more
Date: May 1, 2006
Creator: Dogan, O. N.; Alman, D. E.; Jablonski, P. D. & Hawk, J. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

An update on field test results for an engineered refractory for slagging gasifiers

Description: The widespread commercial adaptation of slagging gasifier technology to produce power, fuel, and/or chemicals from coal will depend in large measure on the technology’s ability to prove itself both economic and reliable. Improvements in gasifier reliability, availability, and maintainability will in part depend on the development of improved performance structural materials with longer service life in this application. Current generation refractory materials used to line the air-cooled, slaggin… more
Date: May 1, 2006
Creator: Dogan, O. N.; Alman, D. E.; Jablonski, P. D. & Hawk, J. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Cast Alloys for Advanced Ultra Supercritical Steam Turbines

Description: The proposed steam inlet temperature in the Advanced Ultra Supercritical (A-USC) steam turbine is high enough (760 °C) that traditional turbine casing and valve body materials such as ferritic/martensitic steels will not suffice due to temperature limitations of this class of materials. Cast versions of several traditionally wrought Ni-based superalloys were evaluated for use as casing or valve components for the next generation of industrial steam turbines. The full size castings are substanti… more
Date: May 1, 2010
Creator: Holcomb, G. R.; Wang, P.; Jablonski, P. D. & Hawk, J. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Materials Performance in USC Steam

Description: The proposed steam inlet temperature in the Advanced Ultra Supercritical (A-USC) steam turbine is high enough (760 °C) that traditional turbine casing and valve body materials such as ferritic/martensitic steels will not suffice due to temperature limitations of this class of materials. Cast versions of several traditionally wrought Ni-based superalloys were evaluated for use as casing or valve components for the next generation of industrial steam turbines. The full size castings are substanti… more
Date: May 1, 2010
Creator: Holcomb, G. R.; Wang, P.; Jablonski, P. D. & Hawk, J. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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