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You searched on: Author: andrew allen

Displaying records 41 to 50 of 78 records.
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41. Analysis of C-S-H Gel and Cement Paste by Small-Angle Neutron Scattering
Published: 12/7/2005
Authors: Andrew John Allen, J Thomas
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854189

42. 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
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854256

43. Characterization of Ceramics by X-ray and Neutron Small-Angle Scattering
Published: 6/1/2005
Author: Andrew John Allen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854268

44. Characterization of Ceramics by X-Ray and Neutron Small-Angle Scattering
Published: 1/16/2005
Author: Andrew John Allen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850864

45. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850753

46. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850690

47. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850778

48. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850714

49. Comprehensive Microstructural Characterization and Predictive Property Modeling of Plasma-Sprayed Zirconia Coatings
Published: 5/1/2003
Authors: A Kulkarni, Z G Wang, T Nakamura, S Sampath, A N Goland, H Herman, Andrew John Allen, J Ilavsky, Gabrielle Gibbs Long, J Frahm, R W Steinbrech
Abstract: Quantitative microstructure characterization to better understand processing-microstructure-property correlations is of considerable interest in plasma sprayed coating research. This paper quantifies, by means of small-angle neutron scattering (SANS ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850653

50. Small-Angle Neutron Scattering Study of the Role of Feedstock Particle Size on the Microstructural Behavior of Plasma-Sprayed Yttria-Stabilized Zirconia Deposits
Published: 3/1/2003
Authors: H Boukari, Andrew John Allen, Gabrielle Gibbs Long, J Ilavsky, Jay S Wallace, C C Berndt, H Herman
Abstract: The microstructures of thick plasma-sprayed yttria-stabilized (8% mass) zirconia deposits have been studied in a series of Porod small-angle neutron scattering (SANS) and multiple small-angle neutron scattering (MSANS) experiments. Three main void c ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850656



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