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Author: andrew allen

Displaying records 31 to 40 of 69 records.
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31. Advanced Neutron and X-ray Techniques for Insights into the Microstructure of EB-PVD Thermal Barrier Coatings
Published: 6/25/2006
Authors: A Kulkarni, A N Goland, H Herman, Andrew John Allen, T A Dobbins, F DeCarlo, J Ilavsky, Gabrielle Gibbs Long, S Fang, P Lawton

32. The Nucleation of Atomic Layer Deposited HfO2 Films, and Evolution of Their Microstruture, Studied by Grazing Incidence Small Angle X-ray Scattering Using Synchrotron Radiation
Published: 1/16/2006
Authors: Martin L Green, Andrew John Allen, Xiang Li, Junling Wang, J Ilavsky, A Delabie, R Puurunen, B Brijs

33. Analysis of C-S-H Gel and Cement Paste by Small-Angle Neutron Scattering
Published: 12/7/2005
Authors: Andrew John Allen, J Thomas

34. Microstructure Characterization of Thermal Barrier Coating Deposits Practical Models from Measuremen
Published: 9/1/2005
Authors: J Ilavsky, Andrew John Allen, T A Dobbins, A Kulkarni, H Herman

35. Characterization of Ceramics by X-ray and Neutron Small-Angle Scattering
Published: 6/1/2005
Author: Andrew John Allen

36. Characterization of Ceramics by X-Ray and Neutron Small-Angle Scattering
Published: 1/16/2005
Author: Andrew John Allen

37. In Situ Quasi-Elastic Scattering Characterization of Particle Size Effects on the Hydration of Tricalcium Silicate
Published: 11/1/2004
Authors: Andrew John Allen, J C McLaughlin, Dan A. Neumann, Richard A Livingston
Abstract: The effects of different particle size distributions on the real-time hydration of tricalcium silicate cement paste have beenstudied in situ by quasi-elastic neutron scattering. The changing state of water in the cement system is followed as a functi ...

38. Microstructure-Property Correlations in Industrial Thermal Barrier Coatings
Published: 7/1/2004
Authors: A Kulkarni, A N Goland, H Herman, Andrew John Allen, J Ilavsky, Gabrielle Gibbs Long, C A Johnson, J A Ruud
Abstract: This paper describes the results from multidisciplinary characterization/scattering techniques employed for the quantitative characterization of industrial thermal barrier coating (TBC) systems used in advanced gas turbines. While past requirements ...

39. Studies of the Microstructure and Properties of Dense Ceramic Coatings Produced by High-Velocity Oxgen-Fuel Combustion Spraying
Published: 3/1/2004
Authors: A Kulkarni, J Gutleber, S Sampath, A N Goland, W B Lindquist, H Herman, Andrew John Allen, B A Dowdy
Abstract: High-velocity oxygen-fuel (HVOF) spraying stands out among the various processes to improve metal and ceramic coating density and surface characteristics. This paper explores microstructure development, coating characterization and properties of HVOF ...

40. Effects of Decalcification on the Microstructure and Surface Area of Cement and Tricalcium Silicate Pastes
Published: 1/15/2004
Authors: J Thomas, J J Chen, Hamlin M Jennings, Andrew John Allen
Abstract: Thin coupons of white portiand cement (WPC) and tricalcium silicate paste were decalcified by leaching in concentratedammonium nitrate solutions, resulting in calcium-to-silicon molar ratios (Ca/Si) ranging from 3.0 (control) down to 0.3. Themicrostr ...

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