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Shikov, A.K.; Bocharov, O. V.; Arzhakova, V.M.; Bezumov, V. N.; Perlovich, Yuriy; Isaenkova, Margarita

doi:10.1023/a:1027392604745

Cited by 25 publications

(13 citation statements)

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“…As to the various properties of hafnium in the solid state at lower temperatures, the results of investigation of the structure and properties of hafnium at moderate temperatures (up to ~1300 K) are described in detail in [9]. …”

Section: Discussionmentioning

confidence: 99%

“…high temperatures (even in an air-water medium) and, second, in view of the results of corrosion tests of GFE-1 hafnium [9], the average gain in weight of hafnium oxide on the surface of investigated sample amounted to about 4×10 -6 percent by weight. The results of this estimation lead one to conclude that the surface oxidation of hafnium cannot have a significant effect on the value of electric resistance being measured.…”

Section: E T ( )mentioning

confidence: 92%

“…The oxidized layer on the sample surface was taken to be small, because, first, according to the data of [2,9], hafnium exhibits a high corrosion resistance at …”

Section: Blackbody Modelmentioning

confidence: 99%

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Heat capacity of liquid hafnium from the melting point to the boiling point at atmospheric pressure

2005

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The temperature dependence of the heat capacity of highly pure hafnium (zirconium content of 0.14% by mass) in the liquid state is measured from the melting point to 5000 K. A sample in the form of a wedge made up by two thin strips of hafnium foil is heated by an electric current pulse. The temperature is measured by a high-speed pyrometer. The radiation from the space formed by foil strips is directed to the pyrometer via fiber-optical light guide. The specific heat capacity of liquid hafnium at atmospheric pressure from the melting point (2504 K) to the boiling point (4875 K) exhibits an increasing pattern similar to that of the previously investigated heat capacity of liquid zirconium.

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Section: Discussionmentioning

confidence: 99%

Section: E T ( )mentioning

confidence: 92%

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Heat capacity of liquid hafnium from the melting point to the boiling point at atmospheric pressure

2005

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“…Although hafnium and hafnium oxide materials find many applications in various fields, there is a lack of studies on fabrication and structure of hafnium nanoparticles. Hafnium is, for example, used as an impurity in safety systems of nuclear reactors because of its large cross section in neutron absorption [ 32 ]. Hafnium alloys are used in medical applications because they are biocompatible and exhibit high corrosion resistance as well as in aerospace technology because it can increase the mechanical strength of materials [ 33 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of hafnium nanoparticles and hafnium nanoparticle films by gas condensation and energetic deposition

Michelakaki¹,

Boukos²,

Dragatogiannis³

et al. 2018

Beilstein J. Nanotechnol.

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In this work we study the fabrication and characterization of hafnium nanoparticles and hafnium nanoparticle thin films. Hafnium nanoparticles were grown in vacuum by magnetron-sputtering inert-gas condensation. The as deposited nanoparticles have a hexagonal close-packed crystal structure, they possess truncated hexagonal biprism shape and are prone to surface oxidation when exposed to ambient air forming core–shell Hf/HfO2 structures. Hafnium nanoparticle thin films were formed through energetic nanoparticle deposition. This technique allows for the control of the energy of charged nanoparticles during vacuum deposition. The structural and nanomechanical properties of the nanoparticle thin films were investigated as a function of the kinetic energy of the nanoparticles. The results reveal that by proper adjustment of the nanoparticle energy, hexagonal close-packed porous nanoparticle thin films with good mechanical properties can be formed, without any additional treatment. It is shown that these films can be patterned on the substrate in sub-micrometer dimensions using conventional lithography while their porosity can be well controlled. The fabrication and experimental characterization of hafnium nanoparticles is reported for the first time in the literature.

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“…Currently, these materials are the subject of a great attention of develop ers of nuclear and aerospace engineering; designers of new microelectronics articles; specialists in the fields of turbomachinery industry, the oil and chemical industry, shipbuilding, and some other key branches of industry. This is explained by the unique set of properties inher ent to this chemical element [1]. Currently, the esti mated world reserves of hafnium (recalculated to hafnium dioxide) exceed 1 million tons, which gives a chance to expect a further increase of its demand in the above listed and other branches of technology, ensuring strategic advantages for countries with Hf containing production in the upcoming years.…”

mentioning

confidence: 99%

Generalization of information on phase diagrams of binary hafnium systems

Brinza

Nesterova

Перк

2013

Russ. J. Non-ferrous Metals

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Prospects of applying the analogy principle when investigating binary hafnium compounds are considered. The classification of binary hafnium compounds by the main distinctive features of their phase diagrams is developed using a taxonomic approach. Seven uniform groups of compounds under consideration are distinguished and distinctive features of phase diagrams of each group are determined. The rationality of a two dimensional metric, the application of which ensures obtaining qualitative evaluations of similarity of various diagrams and reveals the analog compounds, is substantiated. The results of classification can be used when substantiating the compositions of certain basic hafnium alloys and master alloys. Fig. 1. Results of a taxonomic classification of phase diagrams of binary systems of hafnium. Solid lines mark the groups of analog diagrams and dashed lines mark the complexes of diagrams with quantitative correspondences.

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Cited by 25 publications

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Heat capacity of liquid hafnium from the melting point to the boiling point at atmospheric pressure

Heat capacity of liquid hafnium from the melting point to the boiling point at atmospheric pressure

Synthesis of hafnium nanoparticles and hafnium nanoparticle films by gas condensation and energetic deposition

Generalization of information on phase diagrams of binary hafnium systems

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