کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7886232 | 1509786 | 2018 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
R-curve behavior and flexural strength of zirconia-toughened alumina and partially stabilized zirconia composite laminates
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
A composite-laminate formed by thick layers (~ 320â¯Âµm) of zirconia-toughened alumina (ZTA) with thin (~ 50â¯Âµm) interlayers of zirconia partially stabilized (Y-PSZ) has been fabricated by tape casting and pressureless sintering. Fracture behavior and strength has been investigated and compared to a “monolithic” reference, e.g. a stack of zirconia-toughened alumina (ZTA) without interlayers. The fracture behavior has been analysed using stable crack growth in V-notched specimens loaded in 3-point bending. The ZTA+Y-PSZ composite laminate presented a rising crack resistance with maximum values between 6 and 14â¯MPaâ¯m1/2. In contrast, the “monolithic” ZTA laminate shows a plateau R-curve behavior at 2.7â¯MPaâ¯m1/2. Several toughening mechanisms were identified in the ZTA+Y-PSZ composite laminate, such as, crack arrest/slow down, micro cracking and bifurcation. These toughening mechanisms are most likely caused by high tensile residual stresses that were estimated theoretically.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 12, 15 August 2018, Pages 13463-13468
Journal: Ceramics International - Volume 44, Issue 12, 15 August 2018, Pages 13463-13468
نویسندگان
Diego Blaese, Tobias Benitez, Marcelo Barros, Hans Jelitto, Nahum Travitzky, Dachamir Hotza, Rolf Janssen,