The effects of rare-earth oxide additives on the densification of pressureless sintering B4C ceramics

被引：32

作者：

Wei, Rubin ^{[1
]}

Zhang, Yujun ^{[1
,2
]}

Gong, Hongyu ^{[1
,2
]}

Jiang, Yazhen ^{[1
]}

Zhang, Yan ^{[1
]}

机构：

[1] Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jinan 250061, Peoples R China

[2] Shandong Univ, Key Lab Special Funct Aggregated Mat, Minist Educ, Jinan 250061, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2013年 / 39卷 / 06期

关键词：

A; Sintering; C. Mechanical properties; E. Nuclear applications; B4C; BORON-CARBIDE; MECHANICAL-PROPERTIES; COMPOSITES;

D O I：

10.1016/j.ceramint.2013.01.073

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：

Boron carbide ceramics used as neutron absorbing materials in fast breeder reactor were fabricated with boron carbide powders and different rare-earth oxide additives by pressureless sintering. The effects of rare-earth oxide as well as phenolic resin on densities and mechanical properties of the composites were studied. The addition of Dy2O3, Eu2O3, and Sm2O3 was found to be beneficial in the densification of B4C ceramics. B4C with 4 wt% rare-earth oxide and 18 wt% phenolic resin, exhibiting bulk density of 90-96% T.D., flexural strength of 276-358 MPa, could be prepared by pressureless sintering at 1960-2080 degrees C, which are capable of meeting the requirement of fast breeder reactor. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：6449 / 6452

页数：4

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