High-temperature oxidation behaviour of a single-phase (Mo,Ti)5Si3 (Mo-Si-Ti) alloy

被引：32
作者：
Burk, Steffen [1 ]
Gorr, Bronislava [1 ]
Christ, Hans-Juergen [1 ]
Schliephake, Daniel [2 ]
Heilmaier, Martin [2 ]
Hochmuth, Christian [3 ]
Glatzel, Uwe [3 ]
机构：
[1] Univ Siegen, Lehrstuhl Mat Kunde & Werkstoffprufung, D-57068 Siegen, Germany
[2] Tech Univ Darmstadt, D-64287 Darmstadt, Germany
[3] Univ Bayreuth, Lehrstuhl Metall Werkstoffe, D-95440 Bayreuth, Germany
来源：
SCRIPTA MATERIALIA | 2012年 / 66卷 / 05期
关键词：
Intermetallic phases; Silicides; High temperature oxidation; Mo-Si-B alloys; MOLYBDENUM SILICIDES; INTERMETALLICS; SYSTEM; TI5SI3;
D O I：
10.1016/j.scriptamat.2011.10.042
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The alloy composition Mo-37Si-40Ti (at.%) was synthesized by arc melting in order to obtain nearly single-phase (Mo,Ti)(5)Si-3. At 750-1300 degrees C, the intermetallic compound was found to be superior to both single-phase Mo5Si3 and single-phase Ti5Si3 with regard to oxidation resistance. Upon oxidation, formation of a protective SiO2-TiO2 duplex scale was observed, which dramatically reduces outward diffusion of Ti. The results indicate that Ti alloying is a promising concept to further improve oxidation resistance of Mo-based alloys such as Mo-Si-B. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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收藏
页码：223 / 226
页数：4
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