کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1450145 | 988723 | 2006 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure-stress relationships in liquid-phase sintered alumina modified by the addition of 5Â wt.% of calcia-silica additives
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Hot-pressed alumina samples, with 5Â wt.% additions of CaO:SiO2 possessing molar ratios ranging between 1:5 and 10:1 were studied by electron microscopy. Marked differences in microstructure (e.g. grain size, secondary crystalline phases and grain boundary film thickness) were observed, which depended on the composition of sintering additives. The compositions of glassy phases in triple pockets and in grain boundaries varied markedly depending on sintering additives, but also within individual specimens. High residual compressive stresses were measured in alumina grains of samples which contained low thermal expansion crystalline phases such as anorthite and grossite, while gehlenite-containing samples were correspondingly less stressed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 54, Issue 18, October 2006, Pages 4853-4863
Journal: Acta Materialia - Volume 54, Issue 18, October 2006, Pages 4853-4863
نویسندگان
Peter Å vanÄárek, DuÅ¡an Galusek, Fiona Loughran, Andy Brown, Rik Brydson, Alan Atkinson, Frank Riley,