Effects of nano-NiO addition on the microstructure and corrosion properties of high Nb-TiAl alloy

被引：12
|
作者：
Gui, Wanyuan [1 ]
Lin, Junpin [1 ]
Liu, Mengdi [1 ]
Qu, Yuhai [1 ]
Wang, Yuchao [1 ]
Liang, Yongfeng [1 ]
机构：
[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 782卷
基金：
北京市自然科学基金; 中国国家自然科学基金;
关键词：
Powder metallurgy; Composite; Kirkendall effect; High temperature oxidation; Corrosion resistance; DEFORMATION MECHANISMS; POROUS ALLOYS; BEHAVIOR; NANOCOMPOSITE; NANOPARTICLES; PERFORMANCE; GRAPHITE;
D O I：
10.1016/j.jallcom.2018.12.200
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Powder metallurgy is an important method for preparing TiAl alloys due to its ability to minimize grain size and eliminate compositional segregation. However, the main obstacle to industrial applications is the large number of Kirkendall voids are inevitably introduced in the sintering process because of the diffusion rate discrepancy between Ti and Al atoms. The growth of these cavities in the matrix weakens the oxidation and corrosion resistance under service conditions. Here, a composite with an improved high-temperature antioxidant property and corrosion resistance was fabricated by manipulating chemical reaction, which benefit for higher-temperature applications, such as in aeronautics and aerospace. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：973 / 980
页数：8
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