Formation of aluminide phases on electrodeposited nanocrystalline nickel

被引：17
|
作者：
Rashidi, A. M. [1 ,2 ]
Amadeh, A. [2 ]
机构：
[1] Razi Univ, Fac Engn, Kermanshah, Iran
[2] Univ Tehran, Sch Met & Mat Engn, Univ Coll Engn, Tehran, Iran
来源：
INTERMETALLICS | 2010年 / 18卷 / 08期
关键词：
Aluminides; miscellaneous; Coatings; intermetallic and otherwise; Nanocrystals; LOWER TEMPERATURES; DIFFUSION COUPLES; COATING FORMATION; BASE SUPERALLOYS; FERRITIC STEELS; ATOM-PROBE; KINETICS; GROWTH; MICROSTRUCTURE; ALUMINIZATION;
D O I：
10.1016/j.intermet.2010.04.005
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：
The formation and growth of aluminide phases during pack cementation of electrodeposited nanocrystalline (NC) nickel were investigated and compared with microcrystalline (MC) nickel. MC and electrodeposited NC samples were aluminized at different temperatures for various durations. The microstructure of aluminized specimens was studied by means of SEM and XRD methods. The results showed that the aluminizing time needed for the onset of formation of aluminide phases on NC samples was shorter than MC specimens at all investigated aluminizing temperatures. The aluminide coating formed on MC samples always consisted of Al(3)Ni(2) single layer, whereas the coating formed on NC nickel was Al(3)Ni(2) single layer or Al(3)Ni-Al(3)Ni(2) double layers depending on aluminizing time and temperature. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1517 / 1523
页数：7
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