U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by: Ursula R. Kattner (Fed)

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 126 - 150 of 165

Phase Diagrams for Lead-Free Solder Alloys

December 1, 2002
Author(s)
Ursula R. Kattner
The need for new improved solder alloys and better understanding of reactions during the soldering process grow steadily as the need for smaller and more reliable electronic products grows. A candidate solder alloy needs to fulfill basic requirements

Database for Computational Thermodynamics and Diffusion Modeling Workshop Report

November 1, 2002
Author(s)
Ursula R. Kattner, William J. Boettinger, J E. Morral
Databases for computational thermodynamics and diffusion modeling can be applied to predict phase diagrams for alloy design and alloy behavior during processing and service. Databases that are currently available to scientists, engineers and students need

Use of Thermodynamic Software in Process Modelling and New Applications of Thermodynamic

July 1, 2002
Author(s)
Ursula R. Kattner, G Eriksson, I Hahn, R Schmid-fetzer, Bo Sundman, V Swamy, A Kussmaul, P J. Spencer, T J. Anderson, T G. Chart, A Costa e Silva, B Jansson, B J. Lee, M Schalin
The strongly related nature of the topics allocated to Groups 4 and 5 was such that a close interaction between the two groups appeared essential at all stages of the discussions and for this reason the groups amalgamated. A joint decision was made as to

On Differential Thermal Analyzer Curves for the Melting and Freezing of Alloys

June 1, 2002
Author(s)
William J. Boettinger, Ursula R. Kattner
A model for the response of differential thermal analysis measurement techniques to melting and freezing is explored. The model, which uses a system of ordinary differential equations, predicts sample, sample cup and thermocouple temperature histories

Applications of Computational Thermodynamics

February 1, 2002
Author(s)
J Agren, F H. Hayes, LFJ H. Hoglund, Ursula R. Kattner, B Legendre, R Schmid-fetzer
The major tools used in applying computational thermodynamics to various problems in materials science are briefly presented and several practical examples are given as illustrations. Solutions to industrial problems pertaining to the processing of and

Development of a Diffusion Mobility Database for Ni-Base Superalloys

February 1, 2002
Author(s)
Carelyn E. Campbell, William J. Boettinger, Ursula R. Kattner
For a wide variety of Ni-base superalloy applications, including solidification, homogenization, y precipitation, bonding and repairing processes, and protective bond coats, multicomponent diffusion data are needed. Thus, in the Ni-Al-Co-Cr-Hf-Mo-Re-Ta-Ti

Thermodynamic Assessment of the Gallium - Nitrogen System

November 1, 2001
Author(s)
Albert Davydov, William J. Boettinger, Ursula R. Kattner, T J. Anderson
Thermochemical and phase diagram data for the Ga-N system were assessed by employing the CALPHAD method. A consistent model representation of available thermodynamic properties agrees well with the critically evaluated experimental data. Thermodynamic

Moving the Pulsed Heating Technique Beyond Monolithic Specimens: Experiments with Coated Wires

August 1, 2001
Author(s)
Daniel Josell, D Basak, J L. McClure, Ursula R. Kattner, Maureen E. Williams, William J. Boettinger, M Rappaz
Pulsed heating experiments based on pyrometric measurement of the temperature-time history of metal specimens rapidly heated by passage of electric current have a thirty year history at NIST. In recent years, efforts have been made to move beyond the

Calculation of Phase Equilibria in Candidate Solder Alloys

July 1, 2001
Author(s)
Ursula R. Kattner, C A. Handwerker
New solder alloys are being developed for electronic assemblies as replacements for traditional Pb-containing solder materials as a result of international pressure to remove Pb from the waste stream. In the transition period from Pb-containing to Pb-free

Abstracts for the MSEL Assessment Panel, March 2001

January 26, 2001
Author(s)
Leslie E. Smith, Alamgir Karim, Leonid A. Bendersky, C Lu, J J. Scott, Ichiro Takeuchi, Kathleen M. Flynn, Vinod K. Tewary, Davor Balzar, G A. Alers, Stephen E. Russek, Charles C. Han, Haonan Wang, William E. Wallace, Daniel A. Fischer, K Efimenko, Wen-Li Wu, Jan Genzer, Joseph C. Woicik, Thomas H. Gnaeupel-Herold, Henry J. Prask, Charles F. Majkrzak, Norman F. Berk, John G. Barker, Charles J. Glinka, Eric K. Lin, Ward L. Johnson, Paul R. Heyliger, David T. Read, R R. Keller, J Blendell, Grady S. White, Lin-Sien H. Lum, Eric J. Cockayne, Igor Levin, C E. Johnson, Maureen E. Williams, Gery R. Stafford, William J. Boettinger, Kil-Won Moon, Daniel Josell, Daniel Wheeler, Thomas P. Moffat, W H. Huber, Lee J. Richter, Clayton S. Yang, Robert D. Shull, R A. Fry, Robert D. McMichael, William F. Egelhoff Jr., Ursula R. Kattner, James A. Warren, Jonathan E. Guyer, Steven P. Mates, Stephen D. Ridder, Frank S. Biancaniello, D Basak, Jon C. Geist, Kalman D. Migler
Abstracts relating to research and development in the NIST Materials Science and Engineering Laboratory (MSEL) are presented for a poster session to be presented to the 2001 MSEL Assessment Panel.