Bending properties of epoxy resin matrix composites filled with Ni-Mn-Ga ferromagnetic shape memory alloy powders

被引：25
作者：
Tian, B. [1 ]
Chen, F. [1 ]
Tong, Y. X. [1 ]
Li, L. [1 ]
Zheng, Y. F. [1 ]
机构：
[1] Harbin Engn Univ, Ctr Biomed Mat & Engn, Harbin 150001, Peoples R China
来源：
MATERIALS LETTERS | 2009年 / 63卷 / 20期
关键词：
Ni-Mn-Ga; Composite materials; Mechanical properties; Microstructure; THIN-FILMS; PARTICLES; POLYMER;
D O I：
10.1016/j.matlet.2009.05.004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Two types of epoxy resin matrix composites filled with Ni-Mn-Ga ferromagnetic shape memory alloy powders, with and without magnetic field during curing, were prepared, aiming to create anisotropic and isotropic alignments of the Ni-Mn-Ga particles. The bending properties of the composites are found to be significantly influenced by the distribution of Ni-Mn-Ga particles in the epoxy matrix. The composites without magnetic field during curing exhibit larger bending strength and fracture strain than the composites with magnetic field during curing. The fractography reveals that the Ni-Mn-Ga particle chains formed in the composites with magnetic field during curing facilitate the initiation and propagation of cracks, thus weakening the bending properties. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：1729 / 1732
页数：4
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