Transmission electron microscopy study of precipitates in a NiAl-TiB2 composite

被引：2
作者：
Shen, GJ [1 ]
Cao, GH
Liu, ZG
机构：
[1] Southeast Univ, Anal & Testing Ctr, Nanjing 210096, Peoples R China
[2] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
来源：
MATERIALS CHARACTERIZATION | 2001年 / 47卷 / 01期
关键词：
transmission electron microscopy; microstructures; intermetallic NiAl;
D O I：
10.1016/S1044-5803(01)00149-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A TiB2 particle-reinforced NiAl alloy composite was fabricated by hot-pressing aided exothermic synthesis. The microstructures of the composite were investigated by transmission electron microscopy (TEM). The experimental results show that a fee phase with lattice constant a = 1.05 nm precipitated in the TiB2/NiAl composite. TEM energy dispersive X-ray (EDX) spectroscopy (Philips, CM200 FEG, spot size: 5 nm) analysis on this fee phase indicated that it contains the elements Ni, Al and B with near atomic ratio 20:3:6, thus, this fee phase is a boride, Ni20Al3B6. (C) 2001 Elsevier Science Inc. All rights reserved.
引用
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页码：39 / 42
页数：4
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