Effects of Yttrium on Cyclic Oxidation Resistance of Co-10Cr-5Si Alloy

Jun Huai Xiang; Xian Chao Xu; Ling Yun Bai; Yun Xiang Zheng; Huai Shu Zhang

doi:10.4028/www.scientific.net/AMR.785-786.914

Paper Titles

Research on Surface Roughness of Die Steel in Micro-Etching
p.896

Preparation of Thick Ceramic Coating by Laser Multi-Layer Cladding II - Microstructural Characteristics
p.901

Preparation of Thick Ceramic Coating by Laser Multi-Layer Cladding I - Crack Control
p.906

The Spherical Casting WC Powder and its Application in Laser Surface Alloying Treatment
p.910

Effects of Yttrium on Cyclic Oxidation Resistance of Co-10Cr-5Si Alloy
p.914

Sn Whisker Growth in Cu(Top)-Sn(Bottom) Bilayer System upon Room Temperature Aging
p.918

Fabrication and Microstructure of Zn-Sn Target Material Alloy
p.924

The Effect of Grain Size and Cl^-Concentration on the Passive Behavior of Cu in Borate Buffer Solution
p.928

Investigating Electrochemical Inhomogeneity on Phosphating Process of Nano-SiO₂ Additive Using Wire-Beam Electrode
p.933

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 785-786Effects of Yttrium on Cyclic Oxidation Resistance...

Effects of Yttrium on Cyclic Oxidation Resistance of Co-10Cr-5Si Alloy

Abstract:

The cyclic oxidation behavior of Co-10Cr-5Si alloys with and without Y in atmosphere at 800 °C was investigated. The addition of 0.3 at.% Y decreased the average parabolic rate constant from 4.45×10^-10 g²cm^-2s^-1to 3.58×10^-10 g²cm^-2s^-1. The thin scales grown on Co-10Cr-5Si alloys were mainly composed of an outer CoO layer, followed by an inner protective SiO₂ layer. However, the scales can not be observed for Co-10Cr-5Si-0.3Y alloy, probably due to the spallation of the scales during the cooling process. The addition of 0.3 at.% Y improved the cyclic oxidation resistance of the Co-10Cr-5Al alloy.