کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10142282 | 1646091 | 2019 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of He ion irradiation on the microstructures and mechanical properties of t' phase yttria-stabilized zirconia ceramics
ترجمه فارسی عنوان
اثرات اشعه یون یون بر روی ریزساختارها و خواص مکانیکی سرامیک زیرکونیا تثبیت شده یتتریا
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
سرامیک زیرکونیوم تثبیت کننده یتیتا، پخت سیلر جرقه، ویژگی های مکانیکی، تبدیل فاز، اشعه یون هلیوم،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
چکیده انگلیسی
The dense ZrO2-8â¯wt.% Y2O3 ceramics with tetragonal (t') phase were prepared by spark plasma sintering (SPS). The micro-structure modification in poly-crystalline t' phase YSZ ceramics irradiated with 60 KeV He ions over a wide fluence range were studied. It is found that, the t' â t + c phase transformation was detected for the samples irradiated at the fluence above 2 Ã 1017â¯cmâ2. In addition, a three-steep model for damage stages has been proposed and discussed for interpreting the evolution of mechanical properties of t'-YSZ ceramics after irradiated, mainly revealed by the analysis from HRTEM results. Firstly, as the He+ fluences range from 0.5â¯Ãâ¯1017â¯cmâ2 to 1â¯Ãâ¯1017â¯cmâ2, the hardening effects were confirmed in t'-YSZ owing to the irradiation induced defects serve as obstacles to resist slipping of dislocations. As the fluence was increased to 2â¯Ãâ¯1017â¯cmâ2, the degradation of mechanical properties was evidenced, which could be ascribed to the deterioration effect of aggregated He bubbles inside t' YSZ grains. While the fluence increased to 10â¯Ãâ¯1017â¯cmâ2, a seriously damaged region was approximately located at 250â¯nm in depth, at which a great number of He bubbles with different shape and dislocation loops were evidenced, leading to a further reduction of hardness and elastic modulus. No micro-cracks emerge even for He+ fluences as high as 10â¯Ãâ¯1017â¯cmâ2, indicating high irradiation stability and resistance to micro-crack propagation in t'-YSZ.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 771, 15 January 2019, Pages 777-783
Journal: Journal of Alloys and Compounds - Volume 771, 15 January 2019, Pages 777-783
نویسندگان
Guo Pu, Jianxiong Zou, Liwei Lin, Kun Zhang, Bo Liu, Fei Ma, Qiangbing Wang, Qiran Li,