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Robotic weld overlay coatings for erosion control. Quarterly progress report, October 1993--December 1993

Description: Research is being conducted to develop criteria for selecting weld overlay coatings for erosion mitigation in Circulated Fluidized Beds. Twelve weld overlay alloys were deposited on 1018 steel substrates using plasma arc welding. Ten samples from each coating were prepared for erosion testing. All selected coatings were erosion tested at 400C and their erosion resistance and microstructure evaluated. Steady state erosion rates were similar for several weld overlay coatings (Ultimet, Inconel-625… more
Date: January 20, 1994
Creator: Levin, B. F.; DuPont, J. N. & Marder, A. R.
Partner: UNT Libraries Government Documents Department
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PIT Coating Requirements Analysis

Description: This study identifies the applicable requirements for procurement and installation of a coating intended for tank farm valve and pump pit interior surfaces. These requirements are intended to be incorporated into project specification documents and design media. This study also evaluates previously recommended coatings and identifies requirement-compliant coating products.
Date: October 20, 2000
Creator: MINTEER, D.J.
Partner: UNT Libraries Government Documents Department
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Development of Ceramic-Coated Weld Backing Bars

Description: In shipbuilding and many other industries, copper weld backing bars are used to draw the heat out of the weld. The problem that some users of these bars encounter is that these bars, on occasion, actually melt in spots and become welded to the weld plates. After this happens a number of times, the backing bar becomes so degraded that it must be either discarded or machined, both of which are very costly and time-consuming actions. To avoid this fusion between the backing bar and the weld plate,… more
Date: October 20, 1994
Creator: Eggleston, B. R.
Partner: UNT Libraries Government Documents Department
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Corrosion protection of SiC-based ceramics with CVD mullite coatings

Description: SiC based ceramics have been identified as the leading candidate materials for elevated temperature applications in harsh oxidation/corrosion environments. It has been established that a protective coating can be effectively used to avoid problems with excessive oxidation and hot corrosion. However, to date, no coating configuration has been developed that can withstand the rigorous requirements imposed by such applications. Chemical vapor deposited (CVD) mullite coatings due to their desirable… more
Date: April 20, 1996
Creator: Sarin, V.; Mulpuri, R. & Auger, M.
Partner: UNT Libraries Government Documents Department
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Tribological performance of NFC coatings under oil lubrication[Near Frictionless Carbon]

Description: An increase in engine and vehicle efficiency usually requires an increase in the severity of contact at the interfaces of many critical components. Examples of such components include piston rings and cylinder liners in the engine, gears in the transmission and axle, bearings, etc. These components are oil-lubricated and require enhancement of their tribological performance. Argonne National Laboratory (ANL) recently developed a carbon-based coating with very low friction and wear properties. T… more
Date: January 20, 2000
Creator: Ajayi, O. O.; Alzoubi, M.; Erdemir, A.; Fenske, G. R.; Eryilmaz, O. L. & Zimmerman, S.
Partner: UNT Libraries Government Documents Department
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