Technical ceramics from samarium monosulfide for the thermal explosion and magnetron methods of production of SmS films


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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 + xS1–x[ ]2x (x = 0–0.035) (1500°С). 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 xSm2SO4 · (1–x)Sm2O3. Samarium sulfide is thermally hydrolyzed (>300°C) and oxidized (>220°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/cm3. 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 Å/s. A SmS powder containing particles of 90–120 μm in size was used for thermal explosion spraying of semiconductor thermal sensors shaped as cubes with a side length of 5 and 10 mm.

作者简介

V. Bamburov

Institute of Solid State Chemistry, Ural Branch

Email: andreev@utmn.ru
俄罗斯联邦, Yekaterinburg, 620219

O. Andreev

Tyumen State University

编辑信件的主要联系方式.
Email: andreev@utmn.ru
俄罗斯联邦, Tyumen, 625003

V. Ivanov

ZAO Tekhnokomplekt Interregional Association of Technical Acquisition

Email: andreev@utmn.ru
俄罗斯联邦, Dubna, Moscow oblast, 141981

A. Voropai

ZAO Tekhnokomplekt Interregional Association of Technical Acquisition

Email: andreev@utmn.ru
俄罗斯联邦, Dubna, Moscow oblast, 141981

A. Gorshkov

ZAO Tekhnokomplekt Interregional Association of Technical Acquisition

Email: andreev@utmn.ru
俄罗斯联邦, Dubna, Moscow oblast, 141981

A. Polkovnikov

Tyumen State University

Email: andreev@utmn.ru
俄罗斯联邦, Tyumen, 625003

A. Bobylev

Tyumen State University

Email: andreev@utmn.ru
俄罗斯联邦, Tyumen, 625003

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