Influence of mechanical activation of reactive mixtures on the microstructure and properties of SHS-ceramics MoSi2-HfB2-MoB

被引：21

作者：

Potanin, A. Yu. ^{[1
]}

Vorotilo, S. ^{[1
]}

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

Rupasov, S. I. ^{[1
]}

Lobova, T. A. ^{[1
]}

Levashov, E. A. ^{[1
]}

机构：

[1] Natl Univ Sci & Technol MISiS, Leninsky Prospect 4, Moscow 119049, Russia

来源：

CERAMICS INTERNATIONAL | 2019年 / 45卷 / 16期

关键词：

SHS; Combustion; Mechanical activation; Two-level structure; HRTEM; Oxidation; HIGH-TEMPERATURE SYNTHESIS; OXIDATION BEHAVIOR; COMPOSITES; COMBUSTION; KINETICS; ZRB2; FABRICATION; MO5SI3;

D O I：

10.1016/j.ceramint.2019.07.009

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this work, the influence of modifications of SHS-process on the microstructure and performance characteristics of composite ceramics MoSi2-HfB2-MoB with two-level structure was studied. Partial texturing of MoSi2 grains in samples obtained by force SHS pressing technology was revealed. The effect of preliminary mechanical activation on the macrokinetic parameters of combustion and on the microstructure of the synthesized ceramics was studied. A significant grinding of the synthesized ceramics grain and an increasing of physical-mechanical properties are achieved by increasing the velocity and lowering the combustion temperature of the activated mixtures. The sample obtained by hot pressing of SHS powder from MA reaction mixture showed the most optimal combination of hardness (19.5 GPa), porosity (0.4%) and oxidation resistance (1.82.10(-6) mg/(cm(2).s)).

引用

页码：20354 / 20361

页数：8

共 41 条

[1] Preparation of nano-size ZrB2 powder by self-propagating high-temperature synthesis [J].

Camurlu, H. Erdem ;

Maglia, Filippo .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2009, 29 (08) :1501-1506

[2]

Carney C. M., 2014, 38 INT C ADV CER COM, V35

[3] Development of hafnium based high-k materials-A review [J].

Choi, J. H. ;

Mao, Y. ;

Chang, J. P. .

MATERIALS SCIENCE & ENGINEERING R-REPORTS, 2011, 72 (06) :97-136

[4] OXIDATION OF MOSI2-BASED COMPOSITES [J].

COOK, J ;

KHAN, A ;

LEE, E ;

MAHAPATRA, R .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1992, 155 (1-2) :183-198

[5]

Eremina EN, 2005, CHEM SUSTAIN DEV, V13, P197

[6] Microstructural evolution of HfB2 based ceramics during oxidation at 1600-2000°C [J].

Jayaseelan, D. D. ;

Zapata-Solvas, E. ;

Carney, C. M. ;

Katz, A. ;

Brown, P. ;

Lee, W. E. .

ADVANCES IN APPLIED CERAMICS, 2015, 114 (05) :277-295

[7] Combustion synthesis of ultra-high-temperature materials based on (Hf,Ta) B2. Part 1: The mechanisms of combustion and structure formation [J].

Kurbatkina, V. V. ;

Patsera, E. I. ;

Levashov, E. A. .

CERAMICS INTERNATIONAL, 2019, 45 (03) :4067-4075

[8] Self-propagating high-temperature synthesis of advanced materials and coatings [J].

Levashov, E. A. ;

Mukasyan, A. S. ;

Rogachev, A. S. ;

Shtansky, D. V. .

INTERNATIONAL MATERIALS REVIEWS, 2017, 62 (04) :203-239

[9] Self-propagating high-temperature synthesis of advanced ceramics in the Mo-Si-B system: Kinetics and mechanism of combustion and structure formation [J].

Levashov, E. A. ;

Pogozhev, Yu S. ;

Potanin, A. Yu ;

Kochetov, N. A. ;

Kovalev, D. Yu ;

Shvyndina, N. V. ;

Sviridova, T. A. .

CERAMICS INTERNATIONAL, 2014, 40 (05) :6541-6552

[10]

Licheri R, 2009, INT J SELF-PROPAG HI, V18, P15, DOI 10.3103/S106138620901004X

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