共 50 条
Consolidation of B4C-VB2 eutectic ceramics by spark plasma sintering
被引:8
|作者:
Demirskyi, Dmytro
[1
,2
]
Sakka, Yoshio
[1
]
Vasylkiv, Oleg
[1
,2
]
机构:
[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
[2] Nanyang Technol Univ, Singapore 639798, Singapore
基金:
日本学术振兴会;
关键词:
Spark plasma sintering;
Boron carbide;
Eutectic;
Toughness;
Hardness;
FRACTURE-TOUGHNESS;
COMPOSITES;
HARDNESS;
FABRICATION;
STRENGTH;
D O I:
10.2109/jcersj2.123.1051
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 in situ synthesis and consolidation of B4C-VB2 eutectic composites by spark plasma sintering (SPS) is reported. The microstructure properties were determined for composites with the B4C-VB2 eutectic composition as functions of the VB2 content and the VB2-VB2 interlamellar spacing. A change of VB2 concentration from 45 to 48 mol.% resulted in the formation of the rodlike eutectic microstructure. Indentation fracture toughness values higher than 4 MPa.m(1/2) were identified for eutectic composites with interlamellar spacings between 0.9 and 1.2 mu m. The composites obtained by SPS with a composition of 45 mol.% VB2 exhibited a lower Vickers hardness (23-24 GPa) and higher indentation fracture toughness (up to 4.5 MPa.m(1/2)) than the eutectic composites with 48 mol.% of VB2. (C) 2015 The Ceramic Society of Japan. All rights reserved.
引用
收藏
页码:1051 / 1054
页数:4
相关论文