کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1657397 1517627 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evolution of residual stress in air plasma sprayed yttria stabilised zirconia thermal barrier coatings after isothermal treatment
ترجمه فارسی عنوان
تکامل تنش باقی مانده در پتاسیم پتروشیمی ایرتریا، تثبیت پوشش های مقاوم در برابر حرارت زیرکونیا پس از درمان ایزوترمال
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی


• Stress evolution in APS TBCs was measured by Raman spectroscopy and curvature method.
• The as-sprayed YSZ layer was in compressive, but changes to tensile after thermal treatments.
• Further treatment makes the stress in YSZ layer gradually becomes more compressive.
• Both the tetragonal to monoclinic phase transformation and sintering in YSZ layer contribute to the stress evolution.
• The stresses in bond coat induced by the β-NiAl to γ/γ′-Ni3Al phase significantly affect stresses of TBCs.

The evolution of residual stresses in yttria stabilised zirconia (YSZ) thermal barrier coatings (TBCs) produced by air plasma-spray technique after thermal treatments at 1150 °C was investigated. The residual stresses in YSZ layer were measured using the Raman spectroscopy and curvature method, respectively. Generally, the YSZ layer was under compressive stress in as-deposited condition, but changed to tensile after thermal treatment for 30 hours partly due to the monoclinic to tetragonal phase transformation in YSZ layer. With prolonged thermal treatment, the residual stress gradually transformed from tensile to compressive, which can be attributed to the sintering in the YSZ layer. In addition, the β-NiAl to γ/γ′-Ni3Al phase transformation in the bond coat also plays an important role on the stress in the YSZ layer.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 251, 25 July 2014, Pages 98–105
نویسندگان
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