Densification of additive-free B 4 C-SiC composites by spark plasma sintering

被引：5

作者：

Matovic, B. ^{[1
]}

Tatarko, P. ^{[2
]}

Maksimovic, V. ^{[1
]}

Maletaskic, J. ^{[1
]}

Stoiljkovic, M. ^{[1
]}

Hanzel, O. ^{[2
]}

Cvijovic-Alagic, I. ^{[1
]}

机构：

[1] Univ Belgrade, Vinca Inst Nucl Sci, Natl Inst Republ Serbia, Mike Petrovica Alasa 12-14, Belgrade 11000, Serbia

[2] Slovak Acad Sci, Inst Inorgan Chem, Dubravska Cesta 9, Bratislava 84536, Slovakia

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2024年 / 44卷 / 09期

关键词：

B 4 C-SiC ceramics; Spark Plasma Sintering; Microstructure; Mechanical properties; Laser-induced damage; BORON-CARBIDE; MECHANICAL-PROPERTIES; CERAMICS; B4C;

D O I：

10.1016/j.jeurceramsoc.2023.12.024

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：

The B4C-SiC composites were obtained through densification of B4C and beta-SiC powders with different ratios using Spark Plasma Sintering (SPS). Thermal treatment was conducted in the 1850-2000 degrees C temperature range under pressure of 70 MPa. Starting powder ratio effect on sintering behavior, relative density, microstructural development, and mechanical properties of obtained composites was investigated. Results showed that only starting compounds were observed in sintered ceramics with uniformly distributed and densely compacted B4C and SiC grains. Maximal relative density (100 %) was achieved for 25 % B4C-75 % SiC sample densified at 2000 degrees C. Obtained composites' microhardness ranged from 33 to 43 GPa, depending on constituents' content and densification temperature. Maximal microhardness was achieved for composite with the maximal amount (75 %) of B4C densified at 2000 degrees C. Composites' behavior in extreme conditions was evaluated through their interactions with laser beam and obtained results showed that SPS is effective densification method for obtainment of additive-free B4C-SiC composites applicable in extreme radiation environments.

引用

页码：5340 / 5346

页数：7

共 38 条

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