کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5350743 1503555 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Isothermal and cyclic oxidation resistance of pack siliconized Mo-Si-B alloy
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Isothermal and cyclic oxidation resistance of pack siliconized Mo-Si-B alloy
چکیده انگلیسی
Oxidation behaviour of MoSi2 coated Mo-9Si-8B-0.75Y (at.%) alloy has been investigated at three critical temperatures including 750, 900 and 1400 °C in static air. Thermogravimetric analysis (TGA) data indicates a remarkable improvement in the oxidation resistance of the silicide coated alloy in both isothermal and cyclic oxidation tests. The cross-sectional scanning electron microscopy and energy dispersive spectroscopic analysis reveal the occurrence of internal oxidation particularly at the crack fronts formed in the outer MoSi2 layer during thermal cycling. The dominant oxidation mechanisms at 750-900 °C and 1400 °C are identified. Development of MoB inner layer further improves the oxidation resistance of the silicide coated alloy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 414, 31 August 2017, Pages 18-24
نویسندگان
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