|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|767203||1463125||2013||6 صفحه PDF||سفارش دهید||دانلود رایگان|
Composites from lead zirconate titanate (PZT) and yttria stabilized zirconia were manufactured to assess cracking and R-curve behavior in compact tension specimens. Additions of zirconia led to a reduction in PZT grain size and shifted the fracture behavior from intergranular fracture to intragranular fracture. The R-curves exhibited higher starting values, a steeper slope and a higher plateau value with increasing content of zirconia, albeit the effects on the toughness values were not more than 20%. The results are rationalized through increased crack tip toughness, reduced ferroelastic toughening and enhanced transformation toughening.
► Additions of zirconia reduced PZT grain size and increased intragranular fracture.
► Zirconia increased initial toughness and plateau toughness.
► The initial R-curve became steeper with increasing zirconia content.
Journal: Engineering Fracture Mechanics - Volume 100, March 2013, Pages 86–91