The Effect of Zirconium Addition on the Oxidation Resistance of Aluminide Coatings

被引：8

作者：

Zagula-Yavorska, Maryana ^{[1
]}

Pytel, Maciej ^{[1
]}

Romanowska, Jolanta ^{[1
]}

Sieniawski, Jan ^{[1
]}

机构：

[1] Rzeszow Univ Technol, Dept Mat Sci, PL-35959 Rzeszow, Poland

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2015年 / 24卷 / 04期

关键词：

aluminide coating; nickel; oxidation; superalloys; zirconium; BETA-NIAL+ZR; CVD METHOD; NICKEL; MICROSTRUCTURE; SUBSTRATE; ADHESION; BEHAVIOR;

D O I：

10.1007/s11665-015-1421-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nickel, Mar M247, and Mar M200 superalloys were coated with zirconium-doped aluminide deposited by the chemical vapor deposition method. All coatings consisted of two layers: an additive one, comprising of the beta-NiAl phase and the interdiffusion one. The interdiffusion layer on pure nickel consisted of the gamma'-Ni3Al phase and beta-NiAl phase on superalloys. Precipitations of zirconium-rich particles were found near the coating's surface and at the interface between the additive and the interdiffusion layer. Zirconium doping of aluminide coating improved the oxidation resistance of aluminide coatings deposited both on the nickel substrate and on the Mar M200 superalloy. Precipitations of ZrO2 embedded by the Al2O3 oxide were formed during oxidation. It seems that the ZrO2 oxide increases adhesion of the Al2O3 oxide to the coating and decreases the propensity of the Al2O3 oxide rumpling and spalling.

引用

页码：1614 / 1625

页数：12

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