Structure and Mechanical Properties of Hot-Pressed Composite Ceramics W2B5–ZrB2–SiC–B4C

被引：0
|
作者：
D. D. Nesmelov
S. S. Ordan’yan
Yu. P. Udalov
机构：
[1] Saint Petersburg State Institute of Technology (Technical University),
来源：
Refractories and Industrial Ceramics | 2021年 / 62卷
关键词：
ceramics; hot pressing; tungsten boride; zirconium boride; silicon carbide; boron carbide; bending strength; flexural strength; hardness; fracture toughness;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A high-density ceramic material (97% of theoretical density) was obtained by hot pressing of ball-milled powders W2B5, ZrB2, SiC and B4C with holding for 15 minutes at a temperature of 1850°C and a pressure of 30 MPa in an argon atmosphere. The structure and composition of the material were investigated by x-ray diffraction, scanning electron microscopy, and energy-dispersive x-ray spectroscopy. Vickers hardness (19.3 GPa), crack resistance coefficient (5,7 MPa∙m1/2) and bending strength (695 MPa) were determined.
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页码：202 / 207
页数：5
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