#################################################### # Tabbetha A. Dobbins # requesting 7 days, at minimum=6 days # beamline 33ID, "Functional Microstructures for Optimized Thermal Barrier and Wear Resistant Coatings using Side-Bounce USAXS" #################################################### # top:/home/www/beamtime-requests/req00329.txt # UNICAT Member Beam Time Request #329 # created Mon Dec 09 15:43:32 CST 2002 #################################################### beamline: 33ID collaboration: No collaborator+Pete: on contact: tdobbins@nist.gov days: 7 description: Previous investigations have looked primarily at plasma sprayed (PS) electron beam physical vapor deposited (EB-PVD) yttria-stabilized zirconia (YSZ) thermal barrier coatings (TBCs). Recently, dense vertically cracked (DVC) PS coatings have been developed in an attempt to combine the advantages of standard PS and EBPVD microstructures regarding their mechanical properties. While we have previously measured some as-deposited DVC microstructures, it remains to be determined how well this microstructure stands up to in-service thermal cycling. Thus, we aim to compare heat treated with as-deposited DVC samples. Second, we wish to continue our studies of directed vapor deposited (DVD) YSZ coatings (a variation of EBPVD coatings aimed improving the improving the thermal insulation). Preliminary studies suggest that a predictive relationship exists between processing and the microstructure controlling thermal properties. As with EBPVD, the anisotropy is such that 3 orthogonal sample orientations need to be measured. Finally, we would like to devote some measurement time to some preliminary measurements on PS polymer coatings. PS polymer coatings are a recent innovation that show promise for wear resistant coatings in a chemically hostile environment. We propose carrying out an initial quantitative assessment of their microstructure. All scattering data collected will be analyzed using the anisotropic USAXS analysis scheme being developed by NIST. Once optimized, it is proposed that this package be made available the general users of the Unicat side-bounce USAXS. equipment+required: Side-Bounce USAXS Instrumental Set-Up experiment: Functional Microstructures for Optimized Thermal Barrier and Wear Resistant Coatings using Side-Bounce USAXS foreign+nationals: Anand Kulkarni hazards: none. minimumdays: 6 name: Tabbetha A. Dobbins new+request: on nonmembers: Jan Ilavsky, Andrew Allen, Anand Kulkarni unacceptable+dates: January 29 - February 5 February 27 April 19 - 20 #REMOTE_HOST: h196056.nist.gov #REMOTE_ADDR: 129.6.196.56 #CONTENT_LENGTH: 2293 #HTTP_REFERER: http://www.uni.aps.anl.gov/unireq.htm #HTTP_USER_AGENT: Mozilla/4.78 [en] (Windows NT 5.0; U)