کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7896422 | 1510020 | 2013 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cyclic oxidation of high temperature coatings on new γâ²-strengthened cobalt-based alloys
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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: Cyclic oxidation of high temperature coatings on new γâ²-strengthened cobalt-based alloys Cyclic oxidation of high temperature coatings on new γâ²-strengthened cobalt-based alloys](/preview/png/7896422.png)
چکیده انگلیسی
An emerging class of cobalt-based γâ²-strengthened alloys promises higher temperature capabilities compared to current Ni-base superalloys commonly used in aerospace and power generation applications. As with Ni-base alloys, high temperature coatings that enhance environmental resistance are desirable. Single crystal samples of Co-9.2Al-9.0W and Co-7.8Al-7.8W-4.5Cr-2.0Ta (at.%) were coated with vapour phase nickel aluminide and MCrAlY. Samples were subjected to cyclic oxidation at 1100 °C with 300-450 1-h cycles. Compared to NiAl-based coatings, the MCrAlY coatings exhibited superior adherence and an interdiffusion zone free of detrimental intermetallic phases. Evolution of microstructure during cycling is discussed with reference to the available thermodynamic data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Corrosion Science - Volume 75, October 2013, Pages 300-308
Journal: Corrosion Science - Volume 75, October 2013, Pages 300-308
نویسندگان
N. Vermaak, A. Mottura, T.M. Pollock,