Study of the effect of precipitant on the high-temperature phase stability of SrO-ZrO2 prepared by n-butanol soft-template method |
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| Authors: | Guorong Duan Aimei Li Chun Kan Xujie Yang Lude Lu Xin Wang |
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| Institution: | 1. Materials Chemistry Laboratory , Nanjing University of Science?&2. Technology , Nanjing, P. R. China, 210094;3. Ruidi Engineering?&4. Technology Center , Nanjing Hydraulic Research Institute , Nanjing, P. R. China, 210024 duangr2003@yahoo.com.cn;6. Ruidi Engineering?&7. Technology Center , Nanjing Hydraulic Research Institute , Nanjing, P. R. China, 210024;8. Technology , Nanjing, P. R. China, 210094 |
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| Abstract: | SrO doped zirconia (20%) was synthesized by n-butanol soft-template method using both NaOH and ammonia solution as precipitants. The high-temperature phase stability was investigated following further heat treatment at 1000°C for 2 h. XRD and Raman spectra were used to characterize the crystal form of zirconia. In addition, TEM was used to characterize the dispersibility of SrO doped zirconia. The results indicated that the concentration of OH? introduced into the ZrO2 lattice was the main factor controlling the crystal form of nanosized zirconia. The NaOH solution precipitant could improve the dispersibility of SrO doped t-ZrO2, and could also prevent the phase transformation of zirconia from t-ZrO2 to m-ZrO2 effectively. |
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| Keywords: | Tetragonal Monoclinic SrO doped zirconia High-temperature phase stability |
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