Centrifugal SHS-Metallurgy of Composite Materials Mo-Si-B

被引：5

作者：

Andreev, D. E. ^{[1
]}

Vdovin, Yu. S. ^{[1
]}

Yukhvid, V. I. ^{[1
]}

Sachkova, N. V. ^{[1
]}

Kovalev, I. D. ^{[1
]}

机构：

[1] Russian Acad Sci, Merzhanov Inst Struct Macrokinet & Mat Sci, Chernogolovka 142432, Moscow Oblast, Russia

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B | 2020年 / 14卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

combustion; self-propagating high-temperature synthesis (SHS); cast composite materials; heat-resistant material (HRM); molybdenum silicoborides;

D O I：

10.1134/S1990793120020025

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Molybdenum is a refractory metal, with a melting point of 2900 K. Its alloys with B and Si, obtained via powder metallurgy, have high heat resistance and have potential use in aircraft engine building. In this paper, the authors examined the possibility of using centrifugal SHS-metallurgy for the production of Mo-Si-B. To synthesize Mo-Si-B, a combination of a highly exothermic mixture (MoO3/Al/Si/B) and a moderately exothermic mixture (Mo/Si/B) were used. In a wide range of ratios, the combustion temperature exceeds 3000 degrees C, which makes it possible to obtain combustion products in a cast form. Studies have shown that variation in the composition of the mixture and the magnitude of the centrifugal effect allows the parameters of combustion to be controlled, along with the composition and structure of molybdenum silicoborides.

引用

页码：261 / 265

页数：5

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