REGULARITIES OF NON-UNIFORM HEATING OF THE TWO-PHASE ENVIRONMENT DURING ELECTRIC CURRENT / Sachkov Igor N.,Marinova Olga,Turygina Victoria F.,Turygin Evgeniy E.,Dolganov Aleksey N. // . - 2016. - V. , l. . - P. 599-605.

ISSN/EISSN:

1314-2704 / нет данных

Type:

Proceedings Paper

Abstract:

By the method of finite elements the heating process of the micro domains of the two-phase system during the flow of electric current simulated. It is shown that formations of peaks of power of a thermal emission in certain points of the environment are possible. The process of synthesis of powder metallurgy is considered by method of a transmission of electric current. It is proposed to use the found phenomenon of Joule micro-heating for the formation of anisotropic and gradient materials. In our work it is for the first time proposed to produce gradient materials use of technology of a transmission of electric current. The elementary mechanism emergence, in the process of agglomeration the crossing points lead to sedimentation of particles and formation of lamellar structures. At the same time in a case when the electro isolating phase forms a matrix, crossing points create a skeleton of coagulated particles directed along distribution of electric current. In the discussed situation it turns out, in particular, that macroscopic (effective) conductivity along the allocated axis is higher, than in the cross direction. In a reverse situation low conductive particles focused perpendicular to the direction of current are formed. In this way anisotropy of heat conductivity and mechanical properties has created. Thus, establishing the direction of current and its time character, it is possible to receive the additional mechanism of influence operational characteristics of materials of powder metallurgy.

Author keywords:

finite element method; computer Modelling; two-phase system

DOI:

нет данных

Web of Science ID:

ISI:000395499800076

Соавторы в МНС:

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Другие поля

Поле	Значение
Book-Group-Author	SGEM
Booktitle	16TH INTERNATIONAL MULTIDISCIPLINARY SCIENTIFIC GEOCONFERENCE, SGEM 2016: SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING, VOL III
Series	International Multidisciplinary Scientific GeoConference-SGEM
Note	16th International Multidisciplinary Scientific Geoconference (SGEM 2016), Albena, BULGARIA, JUN 30-JUL 06, 2016
Organization	Bulgarian Acad Sci; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci \& Arts; Slovak Acad Sci; Natl Acad Sci Ukraine; Inst Water Problem \& Hydropower NAS KR; Natl Acad Sci Armenia; Sci Council Japan; World Acad Sci; European Acad Sci Arts \& Lett; Acad Sci Moldova; Montenegrin Acad Sci \& Arts; Croatian Acad Sci \& Arts; Georgian Natl Acad Sci; Acad Fine Arts \& Design Bratislava; Turkish Acad Sci; Bulgarian Ind Assoc; Bulgarian Minist Environm \& Water
Publisher	STEF92 TECHNOLOGY LTD
Address	1 ANDREY LYAPCHEV BLVD, SOFIA, 1797, BULGARIA
Language	English
ISBN	978-619-7105-57-5
Research-Areas	Geology
Web-of-Science-Categories	Geosciences, Multidisciplinary
Number-of-Cited-References	6
Doc-Delivery-Number	BH0LR