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研究论文

铝化与白金铝化涂层对MAR-M247镍基超合金之抗热腐蚀性质影响研究

  • 李义刚
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  • 中山科学研究院飞弹火箭研究所,成功大学材料科学及工程学系,成功大学材料科学及工程学系 台湾台北 ,台湾台南 ,台湾台南

收稿日期: 2005-08-28

  修回日期: 2005-08-28

  网络出版日期: 2005-08-28

Effects of Aluminide and Platinum-Aluminide Coatings on the Hot Corrosion Behavior of MAR-M247 Nickel-Based Superalloy

  • I.K. Lee~
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  • (*1 ),W.T. Tasi~(2),J.T. Lee~(2)(1. Missile and Rocket Systems Research Division, Chung-Shan Institute of Science & Technology,Taiwan,China;2. Department of Materials Engineering, Cheng-Kung University,Taiwan,China

Received date: 2005-08-28

  Revised date: 2005-08-28

  Online published: 2005-08-28

摘要

本文研究MAR-M247镍基超合金表面经铝化涂层或白金铝化涂层处理后,其热腐蚀效应对腐蚀速率与显微组织之影响,并藉试片质量增加量的变化评估抗热腐蚀的能力.铝化涂层之主要组成为-βN iA l相,而白金铝化涂层表面的主要组成为PtA l2相,利用盐喷覆法将Na2SO4被覆在试片表面,置于热处理炉中观测其热腐蚀性.实验得知,铝化涂层和白金铝化涂层均可明显抑制MAR-M247的热腐蚀,且后者之效果更明显,此两种涂层在910℃之Na2SO4环境中的抗蚀性均较MAR-M247合金为佳.

本文引用格式

李义刚 . 铝化与白金铝化涂层对MAR-M247镍基超合金之抗热腐蚀性质影响研究[J]. 电化学, 2005 , 11(3) : 262 -270 . DOI: 10.61558/2993-074X.1651

Abstract

This study is to investigate the high temperature hot corrosion behavior of aluminide coating and platinum-aluminide coating on Ni-base superalloy MAR-M247. On the platinum-aluminide, aluminide and the base metal, respectively, by the salt spraying method. The resistances to hot corrosion of platinum-aluminide coating, aluminide coating and the base metal were evaluated by the variations of weight gains. Aluminide and platinum-aluminide coating showed significanty beneficial effect on inhibiting the hot corrosion of MAR-M247. But that of the platinum-aluminide coating was even much better. The aluminide coating surface was composed of β-NiAl, and that of the platinum-aluminide coating was PtAl_(2). Both two phases could provide better resistances to hot corrosion than that of MAR-M247 in Na_(2)SO_(4), at 910℃.

参考文献

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