Effect of surface modification on the stability of oxide scales formed on TiAl intermetallic alloys at high temperature

被引：5
|
作者：
Pilone, D. [1 ]
Brotzu, A. [1 ]
Felli, F. [1 ]
机构：
[1] Sapienza Univ Roma, Dept ICMA, Via Eudossiana 18, I-00184 Rome, Italy
来源：
21ST EUROPEAN CONFERENCE ON FRACTURE, (ECF21) | 2016年 / 2卷
关键词：
TiAl intermetallics; oxidation; surface modification; OXIDATION BEHAVIOR; ALUMINUM-ALLOY; CORROSION-RESISTANCE; CONVERSION COATINGS; PHOSPHORIC-ACID; TI-6AL-4V; ELEMENTS;
D O I：
10.1016/j.prostr.2016.06.287
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
TiAl intermetallic alloys have many interesting potential applications in the automotive and aerospace industry due to their low density and good mechanical properties at high temperature. Unfortunately they have a low oxidation resistance at temperature higher than 700 degrees C and the improvement of their oxidation behavior is still an open issue. In this work the surface of a TiA1CrNb alloy has been modified by means of either anodic coating or cerium conversion coating. Afterwards the stability of the oxide scale formed at 900 degrees C has been studied by analyzing crack formation and propagation, which is the phenomenon that can produce scale spallation during the alloy cooling. Copyright (C) 2016 The Authors. Published by Elsevier B.V.
引用
收藏
页码：2291 / 2298
页数：8
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