کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
271834 505008 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Manufacturing of self-passivating W-Cr-Si alloys by mechanical alloying and HIP
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
Manufacturing of self-passivating W-Cr-Si alloys by mechanical alloying and HIP
چکیده انگلیسی

Self-passivating tungsten-based alloys may provide a major safety advantage in comparison with pure tungsten, which is presently the main candidate material for the plasma-facing protection of future fusion power reactors. WCrSi alloys were manufactured by mechanical alloying (MA) and HIP at 1300 °C and 200 MPa for 1 h. Different MA conditions were investigated to obtain powders with lowest possible amount of contaminants and small and homogeneous particle and crystallite size. Milling in WC vials under Ar without process control agent provided best results. After HIP densities close to 100% were obtained. First oxidation tests on preliminary alloys showed self-passivating behavior with rates comparable to WCrSi thin films at 800 °C but worse performance at 1000 °C. In all cases a Cr2WO6 protective layer is formed at the surface.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fusion Engineering and Design - Volume 86, Issues 9–11, October 2011, Pages 1719–1723
نویسندگان
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