Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

您目前所在的位置:首页 - 期刊简介 - 详细页面

中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第16卷    第9期    总第90期    2006年9月

[PDF全文下载]    [Flash在线阅读]    

    

文章编号: 1004-0609(2006)09-1589-06
SiCf增强NiFe2O4复合材料的力学性能
张淑婷1, 2, 姚广春2

(1. 北京矿冶研究总院 金属材料所, 北京 100044;
2. 东北大学 材料与冶金学院, 沈阳 110004
)

摘 要:  采用固态合成法制备SiCf/NiFe2O4复合材料, 研究SiCf添加量对密度、 气孔率、 冲击韧性、 热震性等力学性能的影响。 结果表明, 添加SiCf可以显著改善NiFe2O4尖晶石的力学性能, 含2%SiCf试样的冲击韧性比尖晶石提高约160%, 其增强机理为纤维的脱粘和拔出效应; 经一次热震后强度保持率可提高至96%, SiCf添加量以2%为宜; 界面的结合状态是影响材料性能最重要的因素。

 

关键词:  SiCf/NiFe2O4复合材料; 力学性能; 显微结构; 界面

Mechanical properties of SiCf/NiFe2O4 composite
ZHANG Shu-ting1, 2, YAO Guang-chun2

1. Institute of Metal Materials, Beijing General Research Institute of Mining and Metallurgy, Beijing 100044, China;
2. School of Materials and Metallurgy, Northeastern University, 
Shenyang 110004, China

Abstract: The SiCf/NiFe2O4 composite was prepared by the solid-state reaction. The effect of addition of SiCf on the density, porosity, impact toughness and thermal shock resistance was studied. The results show that the mechanical properties of composite are improved considerably in comparison with that of the NiFe2O4 spinel. The impact toughness of specimen with 2%SiCf is raised about 160%, the prevalent toughening mechanism operating in composites is debonding and pullout of fibers. The strength retention of specimen with 2%SiCf is increased to 96% after thermal shock. The properties of specimen are appropriated when it contains 2%SiCf in comprehensive consideration. The fiber/matrix interface plays a critical role in the determination properties.

 

Key words: SiCf/NiFe2O4 composite; mechanical property; microstructure; interface
 
 

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

主管:中国科学技术协会 主办:中国有色金属学会 承办:中南大学
湘ICP备09001153号 版权所有:《中国有色金属学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市岳麓山中南大学内 邮编:410083
电 话:0731-88876765,88877197,88830410   传真:0731-88877197   电子邮箱:f_ysxb@163.com