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.

引用

页码：223 / 226

页数：4

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