Gradient porosity and large pore size NiTi shape memory alloys
Gradient porosity and large pore size NiTi shape memory alloys
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梯度孔隙率和大孔径NiTi形状记忆合金
DOI：
10.1016/j.scriptamat.2007.07.043
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发表时间：
2007-12-01
影响因子：
6
通讯作者：
Zhang, X. P.
中科院分区：
文献类型：
--
作者：
Zhang, Y. P.;Li, D. S.;Zhang, X. P.
采用临时保持剂(NH4HCO3)和常规烧结方法，成功地制备了具有梯度孔隙率和大孔尺寸的多孔NiTi合金。通过改变NH4HCO3的加入量可以有效地改变多孔合金的孔特征，并且NH4HCO3的加入对多孔合金的微观组织和相变行为没有影响。制备的样品具有径向梯度孔隙率，具有良好的超弹性(大于4%)。(C)2007年Acta Materialia Inc.由爱思唯尔有限公司出版。保留所有权利。
Porous NiTi alloys with gradient porosity and large pore size were successfully fabricated by using a temporary space-holder (NH4HCO3) and a conventional sintering method. The pore characteristics of the porous alloys can be tailored effectively by changing the amount of NH4HCO3 added, and the use of NH4HCO3 has no influence on the microstructure and phase transformation behavior of the porous alloys. The fabricated samples with radial gradient porosity exhibit excellent superelasticity (higher than 4%). (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.