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You searched on: Topic Area: Materials Science Sorted by: date

Displaying records 421 to 430 of 441 records.
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421. Estimation of Process Stability in the MAG Welding Process by Monitoring the Welding Parameters
Topic: Materials Science
Published: 11/1/2001
Author: Thomas A. (Thomas A.) Siewert
Abstract: This paper presents the distribution of the main welding parameters (welding voltage and welding current) for semiautomatic arc welding with the metal active gas (MAG) process, using both flux- cored and solid electrodes. Two different shielding fas ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851229

422. Workshop on Texture in Electronic Applications
Series: Journal of Research (NIST JRES)
Topic: Materials Science
Published: 5/1/2001
Authors: Mark D Vaudin, Debra L Kaiser
Abstract: A two day workshop on Texture in Electronic Applications was held on October 10-11,2000 at NIST, Gaithersburg. The workshop presented an excellent forum for discussion of a broad spectrum of texture-related issues of interest to academic,government a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850490

423. Block Copolymer Thin Films: Physics and Applications
Topic: Materials Science
Published: 2/15/2001
Authors: Michael J Fasolka, A M Mayes
Abstract: A two-part review of research concerning block copolymer thin films is presented. The first section summarizes experimental and theoretical studies of the fundamental physics of these systems, concentrating upon the forces that govern film morpholog ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841503

424. Texture Plus
Topic: Materials Science
Published: 2/1/2001
Author: Mark D Vaudin
Abstract: TexturePlus is a Win '95 or later software package that analyzes crystallographic texture in bulk and thin film specimens. The software analyzes data obtained on a powder x-ray diffractometer. The required data include an x-ray theta-2theta scan ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850426

425. Phase Equilibria and Dielectric Behavior in the CaO:Al^d2^O^d3^:Nb^d2^O^d5^ System
Topic: Materials Science
Published: 11/1/2000
Authors: Terrell A Vanderah, W Febo, Julia Y. Chan, Robert S. Roth, J. M. Loezos, L D. Rotter, Richard G. Geyer, B A Reisner, Dennis Brooke Minor
Abstract: Subsolidus phase equilibria in the CaO:Al2O3:Nb2O5 system at 1325 C in air have been determined. One ternary phase forms, Ca2AlNbO6, which exhibits a perovskite-related structure with 1:1 or NaCl-type ordering of Al3+ and Nb5+ on the B-sites. Inde ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850430

426. Structural Study of Ba^d11^Fe^d8^Ti^d9^O^d41^ by X-Ray Diffraction
Topic: Materials Science
Published: 9/1/2000
Authors: T Siegrist, C Svensson, Terrell A Vanderah, Robert S. Roth
Abstract: The crystal structure of Ba^d11^Fe^d8^Ti^d9^O^d41^ was determined using single-crystal and powder X-ray diffraction nethods. This new phase crystallizes in the hexagonal space group P6^d3^/mmc (No 194) (a=5.7506(3) , c=61.413(2) ; Z=2; Pcalc=5.75 g/ ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850349

427. Phonons and Static Dielectric Constant in CaTiO^d3^ From First Principles
Topic: Materials Science
Published: 8/1/2000
Authors: Eric J Cockayne, Benjamin P Burton
Abstract: CaTiO^d3^ has a static dielectric constant that extrapolates to a value greater than 300 at zero temperature. We investigate the origin of this large dielectric response on a microscopic level, using first-principles plane-wave pseudopotential densi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850401

428. Secondary Ferrite Number Reference Materials: Gage Calibration and Assignment of Values
Series: Special Publication (NIST SP)
Report Number: 260-141
Topic: Materials Science
Published: 2/1/2000
Authors: Christopher N McCowan, Thomas A. (Thomas A.) Siewert, D P Vigliotti, C M Wang
Abstract: Ferrite Numbers (FN) were assigned to blocks of stainless steel that serve as secondary ferrite reference materials (RM 8480 and 8481), and these specimens were placed in our Reference Materials inventory. These reference materials are used to calib ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851156

429. Structure and Microwave Dielectric Properties in the x Ca^d2^AlNbO^d6^: (1-x) Ca^d3^Nb^d2^O^d8^ System
Topic: Materials Science
Published: 2/1/2000
Authors: Julia Y. Chan, Terrell A Vanderah, Robert S. Roth, Winnie K Wong-Ng, B A Reisner, Richard G. Geyer
Abstract: The structure and dielectric properties of bulk ceramics in the xCa2AlNbO6: (1-x)Ca3Nb2O8 system were studied. Ca2AlNbO6 (P21/n, a = 5.3785(1) , b = 5.4158(1) , c = 7.6259(1) , b = 89.93(1)o) is a double perovskite with structure similar to CaTiO3 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850396

430. The International Institute of Welding: Report on 1998 Actions
Topic: Materials Science
Published: 5/3/1999
Author: Thomas A. (Thomas A.) Siewert
Abstract: Commission V covers issues of weld inspection and quality control for the International Institute of Welding (IIW). This report summarizes the information presented at the 1998 Annual Assembly: descriptions of both research and draft ISO standards b ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851212



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