NUCAPT Literature Database

From NUCAPT

21–30 of 63 records found matching your query (RSS):


Select All    Deselect All
 |   | 
Details
   print
  Records Links (down)
Type Blavette, D.; Soisson, F.; Martin, G.; Pareige, C.
  Publication Ordering and Phase Separation in Model Superalloys: 3D Atom Probe versus Monte Carlo simulation Volume Book Chapter
Pages 1999
  Abstract Proceedings of the International Conference on Solid-Solid Phase Transformations  
  Corporate Author  
Publisher  
Editor
  Summary Language 65-72 Series Editor ordering, phase separation, Ni-Al-Cr, 3D atom-probe, monte carlo simulation; 3D Atom Probe, Superalloys  
Abbreviated Series Title The kinetics of ordering and unmixing in model superalloys (NiCrAl) at 600C were effects in the ' investigated at the atomic scale using 3D atom probe and by transmission electron it ion here that microscopy. Very fine precipitates (lnm) with a well ordered structure (Ni3 Al) were observed in the early stages of growth At this stage, their composition was found very close to the equilibrium composition of the y' phase. Coarsening of y' precipitates was observed in the early stages, for particle radius under 2 nm Monte Carlo simulations of kinetics based on a atom-vacancy exchanges mechanism and using a residence time algorithm were also conducted. Experiments and simulations have shown a good agreement. Monte carlo simulations indicate that short range ordering of both Al and Cr precedes the nucleation and Ni3AI ordered phase. The Cr content in nuclei was foun: to be close to that of solution in the very early stages of phase separation
  Series Issue ISSN  
Medium
  Expedition Notes  
Call Number  
Contribution Id  
Serial URL (down) ISBN  
no NU @ karnesky @ 275
Permanent link to this record
 

 
Georges Martin Resumee Georges Martin Miscellaneous 2019 Georges Martin CV Georges Martin no NU @ z-mao2 @ 11558
Permanent link to this record
 

 
Heck, P. R.; Pellin, M. J.; Davis, A. M.; Martin, I.; Renaud, I.; Benbalagh, R.; Isheim, D.; Seidman, D. N.; Hiller, J.; Stephan, T.; Lewis, R. S.; Savina, M. R.; Maine, A.; Elam, J.; Staermann, F. J.; Zhao, X.; Daulton, T. L.; Amari, S. Atom-Probe Tomographic Analyses of Presolar Silicon Carbide Grains and Meteoric Nanodiamonds First Results on Silicon Carbide Abstract 2010 40th Lunar and Planetary Science Conference no NU @ karnesky @ 10734
Permanent link to this record
 

 
Ladwig, Peter F.; Olson, Jesse D.; Bunton, Joseph H.; Larson, David J.; Ulfig, Robert M.; Martens, Richard L.; Gribb, Tye T.; Kelly, Thomas F.; Bonsager, Martin C.; Schultz, Allan E.; Pant, Bharat B.; Chang, Y. Austin Intermixing and phase separation at the atomic scale in Co-rich (Co,Fe) and Cu multilayered nanostructures Journal Article 2005 Applied Physics Letters Appl. Phys. Lett. 87 121912:1-3 LEAP Despite the fact that Co-rich (Co,Fe) alloys and Cu are immiscible materials in bulk form, evidence of thermally induced mixing at the atomic scale has been observed in thin-film multilayers of (Co,Fe) and Cu. However, long term anneals at lower temperatures produced a breakup of the multilayers into a two-phase mixture of (Co,Fe) and Cu particles. The observations were made with the use of the three-dimensional atom probe technique, with supporting evidence from differential scanning calorimetry and x-ray diffraction. Besides their scientific importance, these results are of interest where these (Co,Fe) and Cu thin films are used to produce the giant magnetoresistive effect. no NU @ karnesky @ 420
Permanent link to this record
 

 
Antepara, I.; Villarreal, I.; Rodriguez-Martinez, L.M.; Lecanda, N.; Castro, U.; Laresgoiti, A Evaluation of ferritic steels for use as interconnects and porous metal supports in IT-SOFCs Journal Article 2005 Journal of Power Sources 151 103-107 SOFC; ferritic stainless steel; oxidation; ASR As a way of reducing the production costs of stacks by replacing ceramic components with metal components with a similar thermal expansion coefficient (TEC), today, much of the research work has focused on SOFCs operating at temperatures of under 800 degrees C. Some semi-commercial ferritic stainless steels (FSS) satisfy this TEC. Ikerlan has evaluated samples of two of these. Also, AMETEK stainless steel powders were tested in sintered disks until they were completely densified in order to compare results from dense and porous materials. The first tests performed by Ikerlan were conducted with dense samples and included the oxidation test in air at 800 degrees C and measurements of contact surface electrical resistance (area specific resistance, ASR), to compare electrochemical techniques (electrochemical impedance spectroscopy, EIS) with the traditional four-wire method and indirect measuring of the resistance through current and voltage measurements. An alloy from the last melt manufactured by the company ThyssenKrupp VDM GmbH performed best. These results did not differ greatly from the previous laboratory results attained during alloy development. Only AMETEK powder metallurgy materials were tested as porous bodies, to compare these with these dense materials. and were found to provide much higher oxidation levels, as might be expected. While dense materials can operate under the working conditions of the SOFC, porous materials still need new alloys. no NU @ karnesky @ 497
Permanent link to this record
 

 
Martin, A.; Block, J. A field ion source with electrical mass filter Journal Article 1973 Messtechnik 81 field desorption; Field Evaporation no 6619
Permanent link to this record
 

 
Cetronio, A.; Jones, J. P.; Martin, A. D. Computer simulation of ion images as an aid to indexing small crystallites Journal Article 1974 Surface Science Surf. Sci. 44 computer simulation; Field Ion Microscopy no 6715
Permanent link to this record
 

 
Jones, J. P.; Martin, A. D. High field microscopy of nickel on tungsten Journal Article 1974 Surface Science Surf. Sci. 41 thin film nucleation; Field Ion Microscopy no 6758
Permanent link to this record
 

 
Sarrau, J. M.; Martin, C.; Gallot, J. An atom probe field ion microscope calibrated using tantalum a single isotope metal (French) Journal Article 1975 C. R. Hebd. Seances Acad. Sci. B 281 calibration and charge state studies; atom probe field ion microscopy no 6959
Permanent link to this record
 

 
Walls, J. M.; Martin, A. D.; Southworth, H. N. Combined FIM AES and LEED study of the structure and composition of ion- bombarded W surfaces Journal Article 1975 Surface Science Surf. Sci. 50 low energy ion bombardment; Field Ion Microscopy no 6984
Permanent link to this record
Select All    Deselect All
 |   | 
Details
   print

Personal tools
Seidman Group
Atom-Probe Tomography
Search
Quick Search: