Synthesis of Chromium Diboride in an Arc-Discharge Atmospheric Plasma

被引：0

作者：

Povalyaev, P. V. ^{[1
]}

Pak, A. Ya. ^{[1
]}

Nikolaeva, K. V. ^{[2
]}

Danilova-Tret'yak, S. M. ^{[2
]}

机构：

[1] Natl Res Tomsk Polytech Univ, 30 Lenin Ave, Tomsk 634050, Russia

[2] Natl Acad Sci Belarus, AV Luikov Heat & Mass Transfer Inst, 15 P Brovka Str, Minsk 2200272, BELARUS

来源：

JOURNAL OF ENGINEERING PHYSICS AND THERMOPHYSICS | 2024年

关键词：

vacuum-free electric-arc synthesis; refractory materials; arc discharge; chromium diboride; phase composition; COMBUSTION SYNTHESIS; CRB2; COATINGS; REDUCTION; CARBIDE; ALLOY;

D O I：

10.1007/s10891-024-02996-x

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The authors have described a method for synthesis of the crystalline phases of chromium boride CrB and CrB2 at atmospheric pressure without introducing additional modifiers improving the reactivity of the original charge. The formation of chromium borides was implemented under the action of an arc discharge with the original vacuum free dc electric-arc reactor. The influence of the parameters of the reactor on the phase composition of the obtained samples has been investigated. It has been established that the impact of an arch discharge of strength 200 A and duration 60 s on a mixture of Cr and B powders in a 1.0:2.55 atomic ratio ensures the formation of chromium diboride CrB2. The properties of the obtained powders have been studied by the methods of x-ray diffraction, scanning electron microscopy, and transmission electron microscopy.

引用

页码：1234 / 1245

页数：12

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