scholarly journals Fullerenes and prospects of their use in foundry and metallurgical production

Author(s):  
P. A. Vitiaz ◽  
N. A. Svidunovich ◽  
D. V. Kuis ◽  
Yu. A. Nikalaichyk ◽  
S. I. Rovin

The article is devoted to a special nanostructured form of carbon – fullerenes; the discovery of which became one of the most important events in the field of physics in the 80s of the last century. The article discusses the issues of obtaining and using fullerenes and other nanostructured materials; including hybrid ones; in foundry and metallurgical production: for modifying casting alloys; binders and auxiliary molding materials; for obtaining ceramic and hybrid nanocomposites; and for other purposes. It also provides information on the creation and operation of the world’s leading research centers specializing in the synthesis and application of nanomaterials in metallurgy and foundry.

2017 ◽  
Vol 265 ◽  
pp. 1016-1019
Author(s):  
L.G. Znamenskii ◽  
O.V. Ivochkina ◽  
A.S. Varlamov

A relevant technology issue in lost foam casting is preventing the metal penetration appearance on steel and cast-iron mouldings. As a result of the research the appropriate parting model paint compositions with the use of recycling and nanostructured materials were developed. The basic technological characteristics of the developed parting model paint compositions are: relative stickiness due to VZ-6 18...25 s; residual moisture content 1...1.5 %, permeability to gases 40...50 ea. The parting paint effectiveness is determined by defect reduction of the castings on the core blow, uncertainty in geometry, metal penetration, and also the use of available and environmentally friendly molding materials in their composition, that makes the product to be highly competitive.


2019 ◽  
Vol 27 (4) ◽  
pp. 636-644
Author(s):  
Dmitry V. Zolotaryov ◽  
Filipp D. Belov

This article presents the methodology recommended by the authors for calculating the amount of grants provided from the federal budget in the form of a subsidy for state support for the creation and development of world-class research centers, including international mathematical centers and world-class research centers that carry out research and development on the priorities of scientific and technological development. The methodology involves the distribution of the grant to world-class research centers, depending on the volume of work performed. This is relevant in that at the moment, grants are distributed evenly between world-class research centers every year, and therefore there is no incentive for the centers to intensify work in order to achieve higher values of performance targets. The article thoroughly disclosed the logic of the proposed methodology, presented calculation formulas with explanations. The article discusses the implementation of the tasks of the national project “Science” in terms of creating world-class research centers. The number of centers created in 2019, their types and directions of scientific activity, as well as the number of world-class scientific centers that will be created in subsequent years are indicated in this article. Target performance indicators of the created centers and planned achievements by 2024 are presented. In conclusion, the data presented in the article are summarized, and the positive prospects for Russian science resulting from the creation and functioning of world-class research centers are examined. The conclusion also indicates how the technique developed by the authors can stimulate world-class research centers to fruitful scientific activity.


2005 ◽  
Vol 879 ◽  
Author(s):  
Michael Giersig

AbstractThe creation of two dimensional large-areas of nanoparticles of different morphology and ordering is still a not fully solved problem. The presented paper shows new outstanding methods based on nanosphere lithography for controlling the mask morphology to improve fabrication of nanoscales perfectly ordered over some cm2 dots, rods and rings. An annealed mask with 30nm aperatures was used for the fabrication of ferromagnetic iron nanorings. These nanosystems are expected to find various unique applications. Our method permitted fabrication of nanostructured materials with unique morphology and properties. This field is expected to open new venues in science and technology.


Author(s):  
Marcos Eduardo Zambanini ◽  
Luis P. Bresciani ◽  
Renata Martins Corrêa ◽  
Thais Ettinger ◽  
Arnoldo José de Hoyos Guevara

This study aimed to identify and analyze the interrelations between companies, research centers, universities, government and other relevant players in the micro region of São José dos Campos, focusing on the creation and diffusion of innovations as a strategy for regional development. To this end, we made an interview with 12 regional players Involved in this process. It is hoped the results expand the knowledge of regional development in technologyoriented areas, as well as the dynamics of territorial development in the micro region studied. It is an academic contribution in developing strategies for expanding competitive regions throughincentives for innovation and technology transfer.


2007 ◽  
Vol 22 (1) ◽  
pp. 201-205 ◽  
Author(s):  
W. Moscoso ◽  
M.R. Shankar ◽  
J.B. Mann ◽  
W.D. Compton ◽  
S. Chandrasekar

Large strain extrusion machining (LSEM) is presented as a method of severe plastic deformation for the creation of bulk nanostructured materials. This method combines inherent advantages afforded by large strain deformation in chip formation by machining, with simultaneous dimensional control of extrusion in a single step of deformation. Bulk nanostructured materials in the form of foils, plates, and bars of controlled dimensions are shown to result by appropriately controlling the geometric parameters of the deformation in large strain extrusion machining.


Author(s):  
P. A. Vityaz ◽  
Yu. A. Nikalaichyk ◽  
S. L. Rovin ◽  
N. A. Svidunovich ◽  
D. V. Kuis

This article is a continuation of the series devoted to the creation and application of nanomaterials and nanotechnologies in modern industry in general and in metallurgy, materials science and foundry production in particular. The article deals with the choice of equipment and the development of effective methods for obtaining nanomaterials. Examples of the application of the developed equipment, technologies and materials obtained in the Republic of Belarus and abroad are given.


2020 ◽  
pp. 105-111
Author(s):  
V.I. Ivanov

The analysis of the development of the electrospark method of applying coatings on conductive materials — electrospark doping (ESA) is presented. Three stages of the development of this method are considered: the first (1943—1961) — the creation and establishment of the ESA method, which is connected with the direct activity of the founders of the spark discharge of the spouses B.R. Lazarenko and N.I. Lazarenko; the second (1961— 1991) — the sustainable development of the ESA method; the third (1991—to the present) — the uncontrolled and unsustainable development of the ESA method. In Soviet times, the ESA method was most successfully developed by research centers of Moldova and Ukraine. The possibility of creating such ESA centers in Russia was not considered, although there are some laboratories and scientific community, who continue to work towards the research and application of the ESA method.


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