| (Zn，M)TiO3(M=Co，Ni，Co0.5Ni0.5)固溶体的溶胶-凝胶法合成 |
| Synthesis of the (Zn, M)TiO3 (M=Co, Ni, Co0.5Ni0.5) Solid Solution by a Sol-gel Route |
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| 摘要: 通过改进的溶胶-凝胶工艺在低温(800 ℃)下合成了基于钛酸锌(ZnTiO3)体系的(Zn1-xCox)TiO3、(Zn1-xNix)TiO3和[Zn1-x(Co0.5Ni0.5)x]TiO3陶瓷固溶体。采用X射线衍射分析(XRD)和差示扫描量热法(DSC)等测量技术对产物进行了物相和热稳定性分析。XRD结果表明，获得单一六方相(Zn1-xCox)TiO3、(Zn1-xNix)TiO3和[Zn1-x(Co0.5Ni0.5)x]TiO3时各自的固溶稳定区间为0.5 ≤ x ≤ 1.0, 0.9 ≤ x ≤ 1.0和0.8 ≤ x ≤ 1.0。与此同时，热分析结果证实，伴随钛酸锌基陶瓷体系掺杂钴量的增加，其六方相的热稳定性提高，且效果比掺杂镍更加显著。 |
| 关键词: 钛酸锌基陶瓷 溶胶-凝胶工艺 热稳定性 |
| 基金项目: |
| Abstract: The solid solution of (Zn1-xCox)TiO3, (Zn1-xNix)TiO3 and [Zn1-x(Co0.5Ni0.5)x]TiO3 based on ZnTiO3 system were synthesized at low temperature (800 ℃) by a modified sol-gel route. The phase distribution and thermal stability of these products were conducted by using X-ray diffraction (XRD) analysis and differential scanning calorimetry (DSC) measurements. The XRD results showed that the single phase of hexagonal (Zn1-xCox)TiO3, (Zn1-xNix)TiO3, and [Zn1-x(Co0.5Ni0.5)x]TiO3 could only be obtained at 0.5 ≤ x ≤ 1, 0.9 ≤ x ≤ 1, and 0.8 ≤ x ≤ 1, respectively. Meanwhile, the thermal analysis results indicated that the thermal stability of these ZnTiO3-based ceramics were enhanced by the increasing amount of cobalt substitution, and that cobalt substitution appeared more remarkably than nickel substitution. |
| Keywords: ZnTiO3-based ceramics sol-gel route thermal stability |
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| 罗 君,张 梅,邢献然,于然波,邢奇凤,刘桂荣.(Zn，M)TiO3(M=Co，Ni，Co0.5Ni0.5)固溶体的溶胶-凝胶法合成[J].无机化学学报,2006,22(4):625-628. |
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