Improvement in the oxidation resistance of Nb-Si-Ti based alloys containing zirconium

被引：37

作者：

Zhang, Shengnan ^{[1
]}

Jia, Lina ^{[1
]}

Guo, Yueling ^{[1
]}

Kong, Bin ^{[1
]}

Zhou, Chungen ^{[1
]}

Zhang, Hu ^{[1
]}

机构：

[1] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

来源：

CORROSION SCIENCE | 2020年 / 163卷 / 163期

关键词：

Intermetallics; Zirconium; Superalloys; Oxidation; FRACTURE-TOUGHNESS; ISOTHERMAL OXIDATION; ZR ADDITION; MECHANICAL-PROPERTIES; MICROSTRUCTURE; AL; CR; BEHAVIOR; HF; COMPOSITES;

D O I：

10.1016/j.corsci.2019.108294

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of Zr on high temperature oxidation resistance for Nb-Si-Ti based alloys has been investigated. Results show that the Zr-containing alloys exhibit an improved oxidation resistance, with reduced weight gain and decreased parabolic oxidation rate constant. In particular, the presence of Zr has suppressed the unwanted transition from parabolic to linear oxidation kinetics, therefore retaining fully parabolic oxidation kinetics. It is then demonstrated that the refined microstructure induced by the presence of Zr and the resulting continuous glassy SiO2 layer upon oxidation could be responsible for the improved oxidation resistance.

引用

页数：9