کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10621110 | 988775 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Promoting exclusive α-Al2O3 growth upon high-temperature oxidation of NiCrAl alloys: experiment versus model predictions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Promoting exclusive α-Al2O3 growth upon high-temperature oxidation of NiCrAl alloys: experiment versus model predictions Promoting exclusive α-Al2O3 growth upon high-temperature oxidation of NiCrAl alloys: experiment versus model predictions](/preview/png/10621110.png)
چکیده انگلیسی
The relationships between the compositional changes in the alloy and the morphology and phase constitution of the developing oxide scale are established as a function of oxidation time for the thermal oxidation of a γ-Ni-27Cr-9Al (at.%) alloy at 1373 K and a high and low partial oxygen pressure (pO2) of 2 Ã 104 and 0.1 Pa, respectively. Based on experimental observations, and model calculations using a coupled thermodynamic-kinetic oxidation model, four successive growth stages can be identified for the oxidation of a γ-Ni-27Cr-9Al alloy at 1373 K. It is shown that the exclusive growth of α-Al2O3 is promoted for oxidation at low pO2 by maintaining a sufficiently high concentration of Al in the alloy at the oxide/metal interface during the initial stages of fast oxide-scale growth.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 53, Issue 6, April 2005, Pages 1643-1653
Journal: Acta Materialia - Volume 53, Issue 6, April 2005, Pages 1643-1653
نویسندگان
T.J. Nijdam, L.P.H. Jeurgens, W.G. Sloof,