کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7196462 | 1468344 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Interfacial toughness evaluation of thermal barrier coatings by bending test
ترجمه فارسی عنوان
ارزیابی چقرمگی متقابل حفره های حرارتی با استفاده از آزمون خمش
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کلمات کلیدی
پوشش های مانع حرارتی، خم شدن سه نقطه، چقرمگی شکستگی بین فصلی،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
چکیده انگلیسی
Determining the interfacial properties of thermal barrier coatings (TBCs) is imperative for their durability evaluation and further improvements. A ceramic coating (topcoat) and a NiCoCrALY bondcoat were atmospheric-plasma-sprayed (APS) on a stainless steel substrate. A modified three-point bending test was adopted to initiate and propagate the topcoat/bondcoat (TC/BC) interfacial crack. After a complete delamination, the fracture surfaces were examined by an optical microscope, which shows that the cracking plane was merely on the TC/BC interface. Based on the experimental results of load-displacement and crack length-displacement, the strain energy release rate G for crack propagation was calculated, and the averaged magnitude was 77.1 J/m2. Repeatable results have indicated that the method can be used for the evaluation of interfacial fracture toughness in thermal barrier coatings and other multi-layer structures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Theoretical and Applied Mechanics Letters - Volume 8, Issue 1, January 2018, Pages 3-6
Journal: Theoretical and Applied Mechanics Letters - Volume 8, Issue 1, January 2018, Pages 3-6
نویسندگان
Qi Zhu, Wei He, Lei Chen, Jianguo Zhu, Wenfeng Hao,