混合稀土
材料科学
镧
氧化物
合金
铈
微观结构
冶金
氧化铈
图层(电子)
化学工程
无机化学
复合材料
化学
氢气储存
工程类
作者
Yanick Ateba Betanda,Amina Afrounn,Richard Bousquet,Françoise Riblet
标识
DOI:10.1002/adem.201800716
摘要
The effect of Mischmetal Ce/La on the high temperature oxidation of the heat resistant Ni80Cr20 alloys is studied in order to increase the alloys life time at high temperature. The oxidation kinetic follows the parabolic behavior for both alloys Ni80Cr20‐0 without reactive element and Ni80Cr20‐Ce/La with reactive elements Ce/La. The presence of Ce/La elements strongly decreases the oxidation kinetic. Oxide layer is found to be very adhesive on the alloy containing the reactive elements by scratch test adhesive energy measurement. These results are discussed and correlated with the oxide microstructure, mechanical properties of oxide such stress, and chemical composition of oxide layer.
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