Sol–Gel Processed Y-PSZ Ceramics with 5 wt% Al2O3 |
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| Authors: | Gan Feng Tu Zhi Tong Sui Qiang Huang Chang Zhen Wang |
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| Affiliation: | Metallurgical Physicochemistry Division, Northeast University of Technology, Shen Yang, People's Republic of China |
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| Abstract: | Y-PSZ ceramics with 5 wt% Al2O3 were synthesized by a sol–gel route. Experimental results show that powders of metastable tetragonal zirconia with 2.7 mol% Y2O3 and 5 wt% Al2O3 can be fabricated by decomposing the dry gel powder at 500°C. Materials sintered in an air atmosphere at 1500°C for 3 have high density (5.685 g/cm3), high content of metastable tetragonal zirconia (>96%), and high fracture toughness (8.67 MPa.m1/2). Compared with the Y-PSZ ceramics, significant toughening was achieved by adding 5 wt% Al2O3. |
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| Keywords: | zirconia yttria stabilized alumina doping sol–gel physical properties |
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