کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1556559 | 999197 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Isothermal Oxidation Behavior of Dysprosium/S-Doped β-NiAl Alloys at 1200 °C
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
شیمی مواد
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Isothermal Oxidation Behavior of Dysprosium/S-Doped β-NiAl Alloys at 1200 °C Isothermal Oxidation Behavior of Dysprosium/S-Doped β-NiAl Alloys at 1200 °C](/preview/png/1556559.png)
چکیده انگلیسی
A β-NiAl alloy with normal purity, a S-doped and a Dy and S co-doped β-NiAl alloys were prepared by arc-melting and their corresponding S contents were less than 20 Ã 10â6, 33 Ã 10â6 and 22 Ã 10â6, respectively. The isothermal oxidation behavior of the alloys at 1200 °C was investigated and the extent of S segregation at the scale-alloy interface was determined by scanning Auger microscopy. S-doping had no significant effect on the phase transformation rate from θ- to α-Al2O3, while the addition of Dy retarded this process. For the S-doped alloy, scale rumpling occurred only after 2 h thermal exposure and numerous large voids were observed at the scale-alloy interface where S segregated. In contrast to this, the oxide scale formed on the Dy and S co-doped alloy still remained flat even after 50 h isothermal oxidation and only small voids existed at the interface where S segregation was not detected.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Science & Technology - Volume 30, Issue 3, March 2014, Pages 229-233
Journal: Journal of Materials Science & Technology - Volume 30, Issue 3, March 2014, Pages 229-233
نویسندگان
Lu Wang, Dongqing Li, Jian Chang, Hongbo Guo, Shengkai Gong, Huibin Xu,