کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1462456 989631 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improvements to the sintering of yttria-stabilized zirconia by the addition of Ni
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Improvements to the sintering of yttria-stabilized zirconia by the addition of Ni
چکیده انگلیسی

We have studied the effect of nickel oxide (NiO) on the sintering of yttria-stabilized zirconia (YSZ) at temperatures from 1100 to 1400 °C. Differences in the densification behaviour were observed between the direct use of NiO powders and Ni metal as precursor. Our results show that with the addition of Ni into YSZ, sintering was completed at 1300 °C instead of 1400 °C, a 100 °C reduction. The addition of Ni also increased the shrinkage rate at 1200 °C from −0.29×10−6 s−1 to −0.46×10−6 s−1. Young's modulus of the samples heat treated at 1200 °C measured by microindentation also increased from 26 GPa for YSZ to 65 or 191 GPa for YSZ plus NiO or Ni, respectively. Addition of NiO or Ni also stabilised the cubic phase and promoted grain growth in YSZ during sintering.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 38, Issue 8, December 2012, Pages 6777–6782
نویسندگان
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