Oxidation Resistance of Alcrn Coating Deposited on Ti-46Al-7Nb-0.7Cr-0.1Si-0.2Ni Alloy

Archives of Metallurgy and Materials

J. Małecka¹ 

[1] OPOLE UNIVERSITY OF TECHNOLOGY, FACULTY OF MECHANICAL ENGINEERING, 5 MIKO?AJCZYKA STR., 45-271 OPOLE, POLAND;

关键词: Keywords: intermetallics;    high temperature corrosion;    oxidation;   

DOI  :  10.2478/amm-2014-0102

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

This article presents the results of research on resistance to isothermal oxidation of Ti-46Al-7Nb-0,7Cr-0,1Si-0,2Ni alloy with AlCrN layer applied. The reference material was a Ti-46Al-7Nb-0,7Cr-0,1Si-0,2Ni alloy in initial state without any coating deposited. The protective coating was deposited by PVD process. Attempts at isothermal oxidation in air were performed at 900 and 950°C during 250h. Measurements of the samples’ mass were taken with the accuracy of 10-4 g. An analysis of the obtained results was made: chemical composition analysis, phase analysis of the deposited coating and chemical composition analysis of the alloy surface with the coating deposited after oxidation tests. In the case of the oxidation of alloy in initial state, pronouncedly higher mass gain and ”deferred” scale chipping was noticed. The deposited AlCrN coating significantly reduces spalling processes and makes for lesser mass gain of the oxidized alloy.

【 授权许可】

Unknown