کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1473138 991029 2016 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influences of Al2O3 grain size on high-temperature oxidation of nano-Ni/Al2O3 composites
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Influences of Al2O3 grain size on high-temperature oxidation of nano-Ni/Al2O3 composites
چکیده انگلیسی

Two 5 vol% Ni/Al2O3 composites with the difference in Al2O3 grain size were fabricated by pulsed electric current sintering technique to investigate the influence of Al2O3 grain size on oxidation behavior of the composites. Average Al2O3 grain sizes of two fabricated composites were 1.1 μm and 0.5 μm after sintering. Oxidation tests were conducted at temperatures ranging from 1100 to 1350 °C for 1–48 h in air. A thin NiAl2O4 layer was observed in exposed surface of samples after oxidation. An oxidized zone that consisted of Al2O3 matrix and NiAl2O4 grains was defined. Growth of the oxidized zone obeyed the parabolic law. Influences of Al2O3 grain size on high-temperature oxidation of the composites were discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Asian Ceramic Societies - Volume 4, Issue 1, March 2016, Pages 120–123
نویسندگان
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