MoSi2 coating on Mo substrate for short-term oxidation protection in air

被引：86

作者：

Alam, Md. Zafir ^{[1
]}

Venkataraman, B. ^{[1
]}

Sarma, Bijoy ^{[1
]}

Das, Dipak K. ^{[1
]}

机构：

[1] Def Met Res Lab, Hyderabad 500058, Andhra Pradesh, India

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 487卷 / 1-2期

关键词：

High temperature alloys; Oxidation; Diffusion; Surfaces and interfaces; HIGH-TEMPERATURE OXIDATION; MOLYBDENUM DISILICIDE; MO-9SI-18B ALLOY; MICROSTRUCTURE; DIFFUSION; COMPOSITES; BEHAVIOR; KINETICS; GROWTH; MO5SI3;

D O I：

10.1016/j.jallcom.2009.07.141

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：

Because of their excellent oxidation resistance and high specific strengths, bulk MoSi2 and MoSi2-based composites are used for several high temperature applications. In this work, the effectiveness of a MoSi2 coating formed by pack siliconizing method has been evaluated in providing short-term oxidation protection to pure Mo substrate at 1100 and 1500 degrees C. In terms of weight change, coated Mo showed about similar to 300 times better oxidation resistance than the bare metal at 1100 degrees C. The MoSi2 coating provided good oxidation protection to Mo up to 1 h at 1500 degrees C. The evolution of the surface morphology and the microstructure of the above coating during oxidation has been studied. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：335 / 340

页数：6

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