کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1638458 | 1516996 | 2012 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of Re element on oxidation resistance of Ni3Al-Mo based alloys at 1150 °C
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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![عکس صفحه اول مقاله: Effect of Re element on oxidation resistance of Ni3Al-Mo based alloys at 1150 °C Effect of Re element on oxidation resistance of Ni3Al-Mo based alloys at 1150 °C](/preview/png/1638458.png)
چکیده انگلیسی
The isothermal oxidation behaviors of three kinds of Ni3Al-Mo based alloys at 1150 °C were studied. The morphology, structure and element distribution of oxide scales of the alloys were researched by scanning electron microscopy, X-ray diffraction and electron probe microanalysis. The research results show that there are three oxide layers, an outer layer of NiO, an intermediate layer mainly composed of NiO, NiAl2O4 and a small amount of NiMoO4, and an inner layer of NiAl2O4 and Al2O3. Re element was mainly distributed in the intermediate layer, which plays a role as “diffusion barrier” in the process of oxidation, and effectively reduces the diffusion rate of Al and Mo elements outward and diffusion rate of O element inward. As a result, a Al-rich oxide layer formed in the inner layer inhibits the growth of oxide layer and improves the oxidation resistance of the alloy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 22, Issue 3, March 2012, Pages 510-515
Journal: Transactions of Nonferrous Metals Society of China - Volume 22, Issue 3, March 2012, Pages 510-515
نویسندگان
Yang CHENG, Heng ZHANG, Li-wen SONG, Yue MA, Shu-suo LI, Sheng-kai GONG,