scholarly journals High-Temperature Magnetism as a Probe for Structural and Compositional Uniformity in Ligand-Capped Magnetite Nanoparticles

2014 ◽  
Vol 118 (48) ◽  
pp. 28322-28329 ◽  
Author(s):  
Yury V. Kolen’ko ◽  
Manuel Bañobre-López ◽  
Carlos Rodríguez-Abreu ◽  
Enrique Carbó-Argibay ◽  
Francis Leonard Deepak ◽  
...  
Keyword(s):  
High Temperature ◽  
Magnetite Nanoparticles ◽  
Compositional Uniformity

High temperature phase transformation studies in magnetite nanoparticles doped with Co2+ ion

2012 ◽  
Vol 112 (5) ◽  
pp. 054320 ◽  
Author(s):  
S. S. Pati ◽  
S. Gopinath ◽  
G. Panneerselvam ◽  
M. P. Antony ◽  
John Philip
Keyword(s):  
Phase Transformation ◽  
High Temperature ◽  
Magnetite Nanoparticles ◽  
High Temperature Phase ◽  
Temperature Phase

scholarly journals High temperature stability and low adsorption of sub-100 nm magnetite nanoparticles grafted with sulfonated copolymers on Berea sandstone in high salinity brine

2017 ◽  
Vol 520 ◽  
pp. 257-267 ◽  
Author(s):  
Muhammad Iqbal ◽  
Bonnie A. Lyon ◽  
Esteban E. Ureña-Benavides ◽  
Ehsan Moaseri ◽  
Yunping Fei ◽  
...  
Keyword(s):  
High Temperature ◽  
Magnetite Nanoparticles ◽  
High Salinity ◽  
Temperature Stability ◽  
Berea Sandstone ◽  
High Temperature Stability

Magnetization Drop at High Temperature in Oleic Acid-Coated Magnetite Nanoparticles

2012 ◽  
Vol 48 (11) ◽  
pp. 3307-3310 ◽  
Author(s):  
C. Rodriguez ◽  
M. Banobre-Lopez ◽  
Yu. V. Kolen'ko ◽  
B. Rodriguez ◽  
P. Freitas ◽  
...  
Keyword(s):  
Oleic Acid ◽  
High Temperature ◽  
Magnetite Nanoparticles

Effect of the synthesis conditions on the size of magnetite nanoparticles produced by high-temperature reductive hydrolysis

2017 ◽  
Vol 62 (6) ◽  
pp. 702-710 ◽  
Author(s):  
A. E. Dosovitskii ◽  
E. V. Grishechkina ◽  
A. L. Mikhlin ◽  
D. I. Kirdyankin ◽  
V. M. Novotortsev
Keyword(s):  
High Temperature ◽  
Magnetite Nanoparticles ◽  
Synthesis Conditions ◽  
Reductive Hydrolysis

Monodisperse magnetite nanoparticles with nearly ideal saturation magnetization

RSC Advances ◽  
2016 ◽  
Vol 6 (81) ◽  
pp. 77452-77464 ◽  
Author(s):  
Scott J. Kemp ◽  
R. Matthew Ferguson ◽  
Amit P. Khandhar ◽  
Kannan M. Krishnan
Keyword(s):  
High Temperature ◽  
Saturation Magnetization ◽  
Magnetite Nanoparticles ◽  
High Temperature Oxidation ◽  
Temperature Oxidation

We present a scalable thermolysis and high temperature oxidation procedure for synthesizing monodisperse magnetite nanoparticles with saturation magnetization of up to 80 emu g−1 (412 kA m−1), 92% of bulk magnetite.

Influence of Thermo-Mechanical Processing on the Microstructure of Beryllia Dispersed Nickel Alloys

1973 ◽  
Vol 31 ◽  
pp. 184-185
Author(s):  
M.S. Grewal ◽  
S.A. Sastri ◽  
N.J. Grant
Keyword(s):  
High Temperature ◽  
Nickel Alloys ◽  
Thermomechanical Processing ◽  
Cold Work ◽  
High Temperature Strength ◽  
Strengthening Effect ◽  
Mechanical Processing ◽  
Uniform Dispersion ◽  
Oxide Particles ◽  
Nickel Base

Currently there is a great interest in developing nickel base alloys with fine and uniform dispersion of stable oxide particles, for high temperature applications. It is well known that the high temperature strength and stability of an oxide dispersed alloy can be greatly improved by appropriate thermomechanical processing, but the mechanism of this strengthening effect is not well understood. This investigation was undertaken to study the dislocation substructures formed in beryllia dispersed nickel alloys as a function of cold work both with and without intermediate anneals. Two alloys, one Ni-lv/oBeo and other Ni-4.5Mo-30Co-2v/oBeo were investigated. The influence of the substructures produced by Thermo-Mechanical Processing (TMP) on the high temperature creep properties of these alloys was also evaluated.

Application of TEM to Deformation, Wear, and Fracture of Ceramics

1974 ◽  
Vol 32 ◽  
pp. 472-473
Author(s):  
B. J. Hockey
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Mechanical Behavior ◽  
Brittle Materials ◽  
High Temperature Strength ◽  
Wide Range ◽  
Corrosive Environments ◽  
Further Development

Ceramics, such as Al2O3 and SiC have numerous current and potential uses in applications where high temperature strength, hardness, and wear resistance are required often in corrosive environments. These materials are, however, highly anisotropic and brittle, so that their mechanical behavior is often unpredictable. The further development of these materials will require a better understanding of the basic mechanisms controlling deformation, wear, and fracture.The purpose of this talk is to describe applications of TEM to the study of the deformation, wear, and fracture of Al2O3. Similar studies are currently being conducted on SiC and the techniques involved should be applicable to a wide range of hard, brittle materials.

Lattice Imaging of Grain Boundaries in Ceramics

1977 ◽  
Vol 35 ◽  
pp. 114-115
Author(s):  
D. R. Clarke ◽  
G. Thomas
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Silicon Nitride ◽  
Grain Boundaries ◽  
High Temperature Strength ◽  
Current Interest ◽  
Lattice Imaging ◽  
Special Significance ◽  
Structural Applications ◽  
Refractory Ceramics

Grain boundaries have long held a special significance to ceramicists. In part, this has been because it has been impossible until now to actually observe the boundaries themselves. Just as important, however, is the fact that the grain boundaries and their environs have a determing influence on both the mechanisms by which powder compaction occurs during fabrication, and on the overall mechanical properties of the material. One area where the grain boundary plays a particularly important role is in the high temperature strength of hot-pressed ceramics. This is a subject of current interest as extensive efforts are being made to develop ceramics, such as silicon nitride alloys, for high temperature structural applications. In this presentation we describe how the techniques of lattice fringe imaging have made it possible to study the grain boundaries in a number of refractory ceramics, and illustrate some of the findings.

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