کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10620575 | 988637 | 2011 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evolution of interfacial toughness of a thermal barrier system with a Pt-diffused γ/γⲠbond coat
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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: Evolution of interfacial toughness of a thermal barrier system with a Pt-diffused γ/γⲠbond coat Evolution of interfacial toughness of a thermal barrier system with a Pt-diffused γ/γⲠbond coat](/preview/png/10620575.png)
چکیده انگلیسی
A strain-to-fail method has been employed to examine the interfacial adhesion of electron beam-physical vapor deposited thermal barrier coatings (TBCs) with a Pt-diffused γ/γⲠbond coat. Based on a previously established model, the estimated interfacial toughness decreases with oxidation time of TBCs. Furthermore, the interfacial toughness value varies considerably with the use of different Young's moduli in the model. It is believed that the modulus obtained from beam bending represents the columnar structure of the TBC. In this case, the mode I interfacial toughness was found to vary from 10 J mâ2 for as-deposited TBCs to 0.79 J mâ2 for the 60 h oxidized TBCs. The degradation of adhesion could be attributed to the defect formation and impurity segregation at the TGO/bond coat interface, which is associated with the diffusion of Pt.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 59, Issue 16, September 2011, Pages 6401-6411
Journal: Acta Materialia - Volume 59, Issue 16, September 2011, Pages 6401-6411
نویسندگان
X. Zhao, J. Liu, D.S. Rickerby, R.J. Jones, P. Xiao,