High-temperature behaviour of Ti-Al-Si alloys produced by reactive sintering

被引：19
|
作者：
Novak, Pavel [1 ]
Prusa, Filip [1 ]
Serak, Jan [1 ]
Vojtech, Dalibor [1 ]
Michalcova, Alena [1 ]
机构：
[1] Inst Chem Technol, Dept Met & Corros Engn, CR-16628 Prague 6, Czech Republic
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 504卷 / 02期
关键词：
Titanium aluminide; Titanium silicide; Reactive sintering; Powder metallurgy; Oxidation resistance; Thermal stability; OXIDATION BEHAVIOR; COATINGS;
D O I：
10.1016/j.jallcom.2010.05.115
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：
Alloys formed by Ti-Al intermediary phases have low density and very good high-temperature oxidation resistance. Further improvement of high-temperature behaviour can be achieved by a suitable addition of silicon. In this work, Ti-Al-Si alloys containing 20 wt.% of aluminium and 10-20 wt.% of silicon produced by a reactive sintering technology were tested. Isothermal oxidation tests were carried out at 1000 degrees C in air. The oxidation rate was determined from weight gains caused by oxide formation. Microstructure and phase composition of the oxide layers were studied. Microstructure and hardness changes after various annealing durations were described. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：320 / 324
页数：5
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