The effect of Cr and Y implantation on the oxidation behaviour of PM Ni3Al

被引：0
|
作者：
Haanappel, VAC [1 ]
Pérez, P [1 ]
González-Carrasco, JL [1 ]
Adeva, P [1 ]
Stroosnijder, MF [1 ]
机构：
[1] Commiss European Communities, Joint Res Ctr, Inst Adv Mat, I-21020 Ispra, VA, Italy
来源：
SURFACE MODIFICATION TECHNOLOGIES XI | 1998年
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中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of Cr- and Y-implantation on the isothermal and cyclic oxidation behaviour of a boron-doped Ni3Al intermetallic alloy (obtained through a powder metallurgical route) at 585 and 900 degrees C for up to 200 h is discussed. Under both conditions Y-implantation of Ni3Al caused slightly higher oxidation rates. Evenmore, the oxide scale formed on the yttrium containing material was prone to spallation during cyclic oxidation tests at 900 degrees C in air. Cr-implantation, however, decreased the oxidation rate without any susceptibility for scale spallation; probably due to the formation of a continuous healing alumina layer, induced by the presence of chromium.
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页码：91 / 100
页数：10
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