کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8026738 | 1517609 | 2015 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Oxidation behavior of glass-based composite thermal barrier coating on K417G superalloy with a NiCoCrAlY bond coat at 1000 °C
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A novel thermal barrier coating (TBC) of glass-based composite with inclusions of Nickel, Y-PSZ, and corundum particles was prepared by sintering on K417G superalloy with a NiCoCrAlY bond-coat (BC). Aiming at prohibiting the interfacial reactions between BC and the composite top-coat (TC), pre-oxidation process of BC was carried out to form a continuous α-Al2O3 scale. However, a very thin but continuous layer of gahnite formed at the α-Al2O3 scale/TC interface as a result of their interfacial reactions during oxidation. Thus, the original unstable α-Al2O3/TC interface was replaced by the inactive gahnite/TC interface. Because of the extra protection of the gahnite interlayer as well as the barrier effect of the TC on oxygen permeation, the α-Al2O3 scale thickened very slowly, which made the composite TBC exhibit better oxidation resistance than the NiCoCrAlY coating at 1000 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 270, 25 May 2015, Pages 314-323
Journal: Surface and Coatings Technology - Volume 270, 25 May 2015, Pages 314-323
نویسندگان
Xin Wang, Minghui Chen, Shenglong Zhu, Fuhui Wang,