Technical ceramics from samarium monosulfide for the thermal explosion and magnetron methods of production of SmS films / Bamburov V. G.,Andreev O. V.,Ivanov V. V.,Voropai A. N.,Gorshkov A. V.,Polkovnikov A. A.,Bobylev A. N. // DOKLADY PHYSICAL CHEMISTRY. - 2017. - V. 473, l. 2. - P. 66-70.

ISSN/EISSN:

0012-5016 / 1608-3121

Type:

Article

Abstract:

Physicotechnical foundations of producing technical ceramics from samarium monosulfide were developed. The stable daltonide-type compound SmS forms a solid solution primarily within the range of anion structural vacancies Sm1 + x S1-x {[} ](2x) (x = 0-0.035) (1500A degrees D). In the Sm-S-O system, the compound SmS is in equilibrium with the Sm3S4 and Sm2O2S phases. The surface layer of bulk samples and films of SmS contains the phases Sm3S, Sm2O2S, and xSm(2)SO(4) center dot (1-x)Sm2O3. Samarium sulfide is thermally hydrolyzed (> 300A degrees C) and oxidized (> 220A degrees C) to form the Sm3S4 and Sm2O2S phases. In synthesizing samarium monosulfide from elements by an ampule method, addition of a 15-20\% excess of metallic samarium to the initial mixture affords SmS in more than 95 mol \% yield. The contents of the equilibrium impurities Sm3S4 and Sm2O2S are minimized. Technical ceramics based on SmS was obtained as sintered pellets 50 and 75 mm in diameter with a compressive strength of 45 MPa, a flexural strength of 1.6 MPa, and a density of 4.89 g/cm(3). The rate of SmS film sputtering from a ceramic target on a NanoFab-100 platform under the optimal sputtering conditions (390 V, 150 W) was 1 /s. A SmS powder containing particles of 90-120 mu m in size was used for thermal explosion spraying of semiconductor thermal sensors shaped as cubes with a side length of 5 and 10 mm.

Author keywords:

PHASE-DIAGRAM

DOI:

10.1134/S0012501617040042

Web of Science ID:

ISI:000401454300004

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	APR
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1608-3121
Keywords-Plus	PHASE-DIAGRAM
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Physical
Author-Email	andreev@utmn.ru
ResearcherID-Numbers	Bamburov, Vitaliy/J-3241-2017 Andreev, Oleg/J-7014-2017
ORCID-Numbers	Andreev, Oleg/0000-0001-5211-4200
Funding-Acknowledgement	Ministry of Education and Science of the Russian Federation {[}14.582.21.0006]
Funding-Text	This work was supported by the Ministry of Education and Science of the Russian Federation (Applied Scientific Research and Experimental Development Grant Agreement no. 14.582.21.0006, unique identifier PNIER RFMEFI58214X0006).
Number-of-Cited-References	13
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	2
Journal-ISO	Dokl. Phys. Chem.
Doc-Delivery-Number	EV0SE