Preparation of homogeneous B4C ceramics with high toughness by tape casting

被引：6

作者：

Liu, Yingying ^{[1
]}

Qiao, Yingjie ^{[1
]}

Wang, Yan ^{[1
]}

Liu, Aidong ^{[1
]}

机构：

[1] Harbin Engn Univ, Sch Mat Sci & Chem Engn, Harbin 150001, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2012年 / 549卷

关键词：

Boron carbide ceramics; Laminates; Sintering; Fracture; MECHANICAL-PROPERTIES; BORON-CARBIDE; COMPOSITES; BEHAVIOR; NOZZLES; NITRIDE;

D O I：

10.1016/j.msea.2012.04.020

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The homogeneous B4C ceramics are successfully prepared through tape casting, laminating and hot pressing. The obtained B4C slurry exhibited a shear thinning behavior. After tape casting, both sides of the green sheets were smooth and homogeneous. After lamination and decomposition treatment developed in argon, hot press sintering of laminated boron carbide was proceed at 2000 degrees C. The results indicate that the strength and fracture toughness of B4C specimens are 585 MPa and 4.9 MPa m(1/2), respectively. The primary fracture mode is an intergranular type. The reasons for the improvement in mechanical properties should lie in the tape casting processing technique and the presence of carbonaceous residues in specimen. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：144 / 148

页数：5

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